If you’re looking for the cliff notes – 17″/18″ wheels, 35″-37″ tires and inflate them in accordance to THEIR load curve (40-45PSI Front, 35-40PSI Rear), not the factory tire’s load curve to which most factory TPMS Systems are set. If you’re going to run 20″ wheels, stick to 37″ MT tires as they’ll be the softest to offset the size of the wheel and pay special attention to the pressures. Over 22″ wheels, you’re looking at a substantial reduction in small bump compliance to compliment your Carli Suspension system.
If you have a few minutes to read the “why” – here you go:
One of the first questions we ask when a customer calls with question pertaining to ride quality is “What wheels & tires are on the truck and to what pressures are the tires inflated?” Why, you ask? Simply put, not all wheel/tire combinations are created equal. Load Ratings and pressures, number of plies, radial vs. bias, tread design (A/T, M/T, Highway), and profile all affect one’s ride quality. Suffice is to say, to choose a tire based on price and size alone won’t necessarily net a customer the proper tire for their application.
This guide will provide insight into the more important specifications assigned to a tire by the manufacture and to what heavy-duty truck owners should pay attention when selecting an aftermarket tire. There is an abundance of information on the web pertaining to each tire specification in as much detail as a person could want to read so we’re going to focus on load rating and tire pressure; the most important factors in our opinion.
Specific to heavy duty trucks, let’s take a look at the door tag on our 2012 Ram 2500 Megacab. It lists the stock Michelin’s Spec:
- Front: 265/70R17E as 5500 lbs total (2750 each tire) at 60 PSI.
- Rear: 265/70R17E is listed as 6010 lbs. (3005 each tire) at 70 PSI.
- Total Tire Capacity: 11,510lbs.
We drove our 2012 Ram 2500 Mega cab (6” Performance 2.65 kit and 37 inch Toyo M/T’s) to the scales to get actual weight. We found that with ¼ tank of fuel, normal cab clutter (2 car seats, kid’s toys, race radio) and a 37” spare, we weighed in at 8,480lbs. She’s no featherweight. Further detail revealed a front weight of 5200 lbs. and 3260 lbs. in the rear. This nets us a difference of 1,120lbs less than the GVWR.
The gross vehicle weight rating (GVWR) is the maximum operating weight of a vehicle as specified by the manufacturer including the vehicle’s chassis, body, engine, engine fluids, fuel, accessories, driver, passengers and cargo but excluding that of any trailers. Basically, the maximum weight the vehicle is built to withstand in bolt on accessories plus the load carried in the cab and bed combined. Below is a chart for our particular 2012 Mega Cab 4WD Truck.
So we’ve got a factory Tire capacity of 11,510 lbs. and Truck capacity of 9,600 lbs. We also see the axles are rated to handle the same load to the factory tires, 11,510lbs meaning they’re likely the limiting factor in the GAWR (Gross Axle Weight Rating). This means the GVWR is the true limiting factor to loading our truck, thus it’s the baseline against which we’ll compare the tires.
After purchasing a Carli Suspension, most customers purchase an aftermarket 35” or 37” tire, or a metric equivalent. These aftermarket, all terrain/mud terrain tires are often more robust in both sidewall and ply construction commensurate to their intended application leading to higher load capacities at lower pressures.
We’ve been through more than a few tires in search of the Holy Grail, do it all tire. For the sake of this article, we’ll compare two well regarded brands with which we have extensive experience, Toyo and Falken.
Toyo is our comfort zone; the bar against which all tires are measured. Becoming the Carli go-to tire without any working relationship between the two companies (we pay what you pay for Toyos) was not an easy feat. It took us years upon years of pounding tires everywhere from Southern California to the tip of Baja on the road and on the most rigorous dirt trails and yes, even cacti fields, for these tires to earn their reputation. The tires proved their merit again and again. We recently struck a deal with Falken Tire so a few of the shop rigs are now running the Wild-Peak A/T. The construction of the tire is pretty incredible. The weights and sidewall construction are on par with a Toyo M/T in their equivalent size. They’re D-Rated in the sizes we’re running and haven’t been subjected to near the abuse to which we’ve subjected the Toyo’s. Time will tell if they’re a contender but we thought they’d make a great comparison given they’re a D-Rated tire often recommended to the budget-minded consumer where the Toyo’s are the more expensive, E-Rated option.
UPDATE: 02/25/2019 – The Falken Wildpeak MT01 and AT3W have been widely run across several rigs in our fleet with awesome results. The AT01 was discontinued in favor of the 3W counterpart. The MT01 has been spun, jumped, and slammed over deserts across Southern California on our Fords and Rams without a single failure; we’re happy to report these to be awesome tires. Many of the size offerings in which our customers are interested are D-Rated – we’re even running their C-Rate 38″ tires on two of our shop Cummins – but word is, E-rated alternates are in R&D to be released to market next year. The D-Rated Falken carry a respectable rating of around 3,500lbs but we’re excited for the release of their tires designed around the HD truck platform.
Back to tire pressures… one of the most prevalent mistakes encountered is a failure to adjust tire pressure on a tire well suited to the heavy-duty platform. Shops commonly inflate tires to the MAX cold PSI per the sidewall before sending customers on their way. In an OEM style tire, this provides enough capacity to comfortably carry the GVWR. In an aftermarket tire, however, this means the customer is now unknowingly rolling around with up to 17,200lbs. of tire capacity in an unloaded truck weighing less than half the new tire’s load capability.
The stock Michelins are rated for 3,005 lbs per tire at 70 psi. For sake of comparison, we’ll keep to our recommended tire size, 37” tires for a 17” wheel, as this document pertains to tire recommendations for Carli Suspensions.
The 37×13.50r17 Toyo M/T is rated for 4300 lbs. at 65 psi.; that’s 1,295 lbs MORE at 5 psi LESS per tire, when comparing to the factory Michelins. Referring to Toyo’s weight rating chart, at 35 psi , the tires hold 2,835 lbs. per tire and 40 psi supports 3,110lbs. The pressures recommended by our product developers are 40 psi front, 35 psi rear as that is the pressure at which the suspensions are tuned. These pressures support a total of 6,220lbs. front and 5,670 in the rear, according to the Toyo load chart. This exceeds the GVWR (again, max loaded weight, not unloaded weight) of the truck and we’ve not yet broken 62% of the tire’s maximum capacity.
Again, our truck weighed: 5,200lbs. Front, 3,260lbs. in the rear. Referencing Toyo’s load inflation tables, it’s not only perfectly safe to run 40F/35R, but highly recommended you run the aforementioned tire pressures to ensure maximum ride quality and proper tire wear without the need to constantly adjust for a load. For the Falkens, we found 40F/35R to be a bit “squishy” in the sidewall. We attribute this to the “D” load rating and recommend you raise a D-Rated Tire about 5psi over the pressure at which you’d run your E-Rated Tires. 45F/40R eliminated all handling issues and wears evenly. The Falkens being rated to 3,525 at 50psi still give customers plenty of adjustment up and down to achieve ride quality and maintain load capacity despite their “D” load rating.
The final note is on wheel diameter. Simply put, the larger the wheel and shorter the side wall, the stiffer the wheel and tire will ride. We’ve found that many combinations will significantly reduce small bump compliance, the most popular being 35” tires on 20” wheels on our leveling suspensions. The question most often asked is why new trucks come with 20” wheels if they ride poorly and the answer is simple; to sell trucks. Dealerships want to offer trucks that are aesthetically appealing and customers want larger wheels. If a customer were to inquire about a base model truck (built to work, not look good) they’d find them spec’d with 17”-18” wheels while the Lariats/Laramies will have paint accented 20” wheels. Both can achieve the necessary capacity of the vehicle, but one does it more efficiently and rides better.
Given the spring rate required to suspend these 8,500lb. vehicles, wheel and tire selection remains a very important factor in improving small bump compliance. If we were to adjust the spring rates/shock valving enough to compensate for the stiffer running gear, you’d give up substantial control of the vehicle in all other scenarios other than cruising the expansion joint ridden highway. Carli Suspensions are designed with a utilitarian purpose in mind; thus, we’re not willing to make that compromise. We want the truck to be as composed down rutted-out back-roads as it is on the highway; this goal is easily attainable with the right combination of suspension and wheels/tires. We’re a performance-based suspension manufacturer so all systems are tuned unloaded with 17”-18” wheels on 35”-37”, E-Rated Tires, inflated to 40F/35R. Running any combination outside of this will result in deviation from our desired ride quality.
I have 37 12.5 17 toyo rts on my 17 ram 2500 and have the commuter kit. What tire pressure should I run in these from and rear?
Hi Thomas, 45F, 35R when unloaded.
I have 325/60R20 Fury Offroad MT tires on my 2012 mega cab with the 2.0 commuter kit. What pressure should I be running in the front and rear for optimal comfort ride?
45 Front, 40 Rear
Have you guys done any 37×12.5×20 wildpeaks at’s on stock ram 20″ wheels? I have a 6″ lift. Curious about ride quality?
We do not run 37s on factory wheels, they’re not offset enough. Also, fitment will depend on you arm setup. If you have our Radius Arm System, you’ll need 4.5″ of backspace to clear a 37″ tire.
I have a 2007 mega cab 2500 running your back country 2.0 fox kit with full leave springs and high clearance control arms and the splined sway bar and ball joints. I am running factory wheels right now with 37×12.50×17. My fiberwerx fenders and bedside just showed up the other day. I am looking for a beadlock with the right offset to kind of fill the new fenders. What would you recommend? Im wanting to stay with a 17” wheel and will be switching to 37×13.50 toyo mt.
If you’re running glass, go 4.5″ for the best stance with 37″ tires.
2016 Ram 3500 CC longbed. Running Toyo at2 in 37×12.5r22 on 22×12 (-51) wheels.
What’s your suggested tire pressures for best ride and handling?
Honestly, too large in diameter, too wide and too offset for us to have any experience with. My recommendation would be to go to a different wheel if you’re concerned about ride quality.
Great read. Are you running that standard 40/35psi just for daily on road performance and then airing down at all for any of your off road testing? The 40/35psi sounds like it may be good for the higher speed off road running you guys usually test for, what about slower more towards rock crawling or deeper sand? I understand as you get towards this type of driving guys run all types of pressures for certain reasons, do you guys have a certain “aired down” pressure as a first go to for running sand or something you might want more float for, but still taking into account you’re running heavy full size trucks?
40/35 is for driving around town. Normally at 30/25 or even 25/20 with bead-locks when we’e off-road. Soft sand, even lower. There’s no pressure that works all around, you’re going to need to alter it for extreme circumstances.
I have your 2.5” level kit for my 2016 ram 2500. Can I run 20×10’s with -18 offset without any issues? I currently have 295/65/20 nitro ridge grapplers on the stock 20” rims that I would put on the new rims
295/65/20 Ridge Grapplers are VERY stiff tires, I’d recommend moving to a 35″ tire and sticking to a wheel that’s no more than 9″ wide and a positive offset. We do not recommend negative offsets or 10″ wides as they’re notorious for causing fitment issues. These issues lead to running a smaller tire and are usually on a 20″ or larger wheels exacerbating the diminished ride quality.
I’m running 33×12.50r20 Ridge Grapplers on 20×10 -25 offset, the trucks a 2004 dodge 2500 quad cab long bed 5.9l 24v. What the best optimal tire pressure I can run for a semi comforting ride?
That’s too small of a tire on too large of a wheel for us to make any recommendations, unfortunately.
Hi Carli, Can you tell me the rim dimensions and the tire dimensions of the Gray Ford F250 which is the last photo in this article? Also what Carli Suspension mods were done to her. It just has the Perfect Stance, Level and the wheels are the right size and are a perfect match for that rim size. Any articles on that build?? I have a 2017 F250 Platinum with 2000 miles on her and am in need of your advice to finally set the truck up the way it should be. Thanks, Gerry
Those are a 17×9″ Raceline Wheel and 40×13.5″ Toyo MT. It’s running a 4.5″ Carli Pintop System with every option. This truck belongs to George Pomaville, the owner of 8 Lug Truck Gear – a Carli Stocking Retailer in Northern Michigan.
Thanks for the lightning response. I will shoot him an e-mail and phone call. Do you have a Carli Dealer/Installer in Florida? I live in the Jacksonville Beach area? That Truck is just Way TOOO Gorgeous. Awesome Build George and 8 Lug Truck Gear
Hi Carli, I agree, that is a very good looking set up on that grey truck? I just finished having a 2.5″ level kit installed on a 2017 F350 and still have the factory 20″ rims and tires. I don’t know nearly enough about tire/rim combos and have read everything on your site to get informed but it seems like and I am only more confused. I drive that truck probably 90% highway while towing anywhere from 6k-10k pounds usually long distances from San Diego to Lake Powell or desert, etc…, or simple around town errands with small loads in the back. Install dealer recommended 35″ E-rated tires with 20″ wheels, but after reading everything here it sounds like I should look at smaller rims. I don’t want to modify for fitment if I don’t have to. I am not married to any wheel or tire combo, simply looking for the best performance combo given my usual driving conditions. Thank you for any help provided.
Hi Tom, Best looks and performance on a 2.5″ system will be an 18″ wheel, no more than 9″ wide with 5″ of Backspace on a 37×13.5″ E-Rated tired run at 45F, 40R (max them out when hauling).
Hi Dan, Can you tell me what Carli recommends for a 17″ x 9″ rim and an 18″ x 9″ rim for the offset and backspace using 37″ tires? I am not familiar if putting 40″ tires would result in premature front end wear due to their larger size and weight than the factory tires. What’s your opinion on using 40’s versus 37’s ? Are there any Carli videos you can highlight about this? Thanks Dan, Gerry
Hi Gerry,
Diameter is irrelevant – you didn’t mention the truck so i’ll list both. Rams, ideally, 5.75″ Backspacing (+18mm offset) on a 9″ wide. Fords, 5.5″ Backspace (+12mm offset) on 9″ wide WITH Carli Radius Arms; without you’re looking at a 5″ Backspace (0 offset) on a 9″ wide with more trimming than the former.
We’ve not done a video on this at this time as we’re not in the wheel/tire business – you’re more likely to see us put out product related videos while companies like CJC Offroad put out all around build videos including the information you’re after!
Hey Carli, I have a 2016 ram 2500 on factory 18 inch rims with your pintop 2.5 leveling it fully built out. I’m running 285/75R18 I looked at the toyo spread sheet and it looks like I should be at 50 front and 45 rear, does that sound about right? Thanks for making great stuff!
Hi Connor, for a more narrow tire like a 285 with a 75% profile, that sounds pretty accurate, yes!
Hey Dan,
When you give a recommended Tire pressure, is that a cold fill pressure; or the pressure you want when tires are warmed up. Currently running (unloaded) 16 Ram 2500 QC SB w/ basically 35/12.50R18 Falkens at 46F/44R (Warmed up)
Hi Nathaniel, The recommendations we give are cold. You’ll usually see about 4-5psi variance when warmed up!
2019 F250 Platinum. Considering the 2.5″ commuter leveling kit. I am trying to stick with the factory 20″ wheels. What size tire do you recommend? They will be either Nitto or Toyo. I was thinking 35’s but after reading your page I am questioning the decision.
Hi Rob, I wouldn’t go above a 35″ tire on factory wheels. Make sure to check your clearance to your brake line once you install them.
2013 F-350. Full 4.5″ backcountry kit on 20×10 Sota’s with -19 offset. What tire and what size would you recommend?
37/13.5r20 Toyo MT!
2017 ram 2500, 3.25 Pintop, 20×12 KMC XD820 Grenade w/ -44 offset / 4.77 Back Spacing, AEV Fender Flares, Nitto Trail Grapplers 40×15.5!! Whats your take??
Pretty far out of our wheelhouse, honestly. I would say that would likely require substantial trimming to work, if the fitment is even possible!
Hey Carli,
2020 F250. i was looking at the 4.5′ back country. What do you think about 22×12 wheels with 37-13.5 toyos MT ?
We’re not fans of 20″+ wheels as they tend to ride quite a bit stiffer than the 17/18″. Also, they’re usually very offset causing fitment issues. Depending on the offset the combo at which you’re looking could work but we’d recommend something different.
hi Dan I am running a 37×12.50 general grabber atx on 17×9 +20 race line avengers whats method would you recommend for balancing. They are sitting under my 2018 ram 2500 crew cab with 6.7 cummins and g56 trans with aftermarket clutch. i have stranded stick on weights but there is a slight shake to the steering and slight vibe to the truck wile running down highway around 70 mph. gonna try hub centric rings and see where to go from there. But before i try every thing i wanted your opinion
We’ve stuck to beadlocks mostly and don’t usually do anything to balance them short of lining up the valve-stem mark. Moving into Jeeps recently, we’ve started using balancing beads inside the tire and it’s been awesome. Stick on weights are great for on-road trucks but don’t seem to stay on long off-road.
I have a 2013 f350 srw and I am going to be putting on the 2-2/2″ backcountry setup. I see your recommendation for no larger than 9″ wide wheels and a 5″ backspace. Is that 5″ maximum or 5″ minimum? I guess I don’t know what touches first when the tires get larger.
Hi Mike, 5″-5.5″ is the recommended backspacing. In this instance, i guess I’d call int the “minimum” as it’s a small number but it is actually offset to the outside more than the latter. Stay in that range and you should be fine.
Hey Dan,
I have a 15 F-350, stock suspension at the moment with 18×9’s 5.75 backspacing, 18mm offset. My question is it possible to run 37×12.50 on them with your 2.5” backcountry system without major trimming? Lower air dam is already removed. Will 1/4” really make that much of a difference in backspacing? I’ve run 35’s for the past 36,000.
Thanks,
Kyle
Hi Kyle, you’ll rub the factory radius arm with that combo. If you grab our radius arms with 1/2″ extra tire clearance, you may clear (worst-case, you slightly touch the arm at full lock).
Dan,
Have a ’17 250 with stock 20″ wheels. Looking to upgrade to 2.5″ commuter… what 35″ tires would be best? Keeping stock wheels and looking for best tide quality and sound. thanks!
Toyo ATII would be my pick! Watch the proximity of the tire to the brake lines on the stock wheels; i would recommend a small spacer or aftermarket wheel with any tire larger than stock.
I have a 2008 f350 I am looking to do the 4.5 coil over kit with all the extras. My question is I want to run 38” or 40” tires but I cannot find a E rated tire at that size for a 17” rim. Can I do a D rated tire and not have to worry about issues when towing
Hey Jeff, If you’re going to be towing a lot, i would recommend sticking to E-Rated. D is usually OK for people running around unloaded so long as the load index is high enough but, for trucks that tow often, E will be better.
HI Carli,
Do you supply to Australia or have dealers here?
I do run 35’s BFG M/T on factory wheels 2015 F250 6.7 and have Fox 2.0 res shock front and rear. My ride is not good though and was wondering what can be done to love my truck as i should!
Hi Dewald, We sure do; we sell through Yukon Enterprise in Victoria. You can find their info on our “Retailers” page.
Hi Dan, I have a 2020 F250, I want to run Method 315’s 18 inch with 37 inch BFG KM3’s. I’m installing 4 inch bulge Fiberwrx
Fenders And bedsides, I’m going to use 2 inch spacers front and back for a wider stance with the Carli commuter system. My question
Is, Will a 12.5 wide tire ride better than 13.5? What width works best with your Commuter system? Your suggestions would be greatly appreciated.
Hi Patrick, So long as you keep the pressures in check, both should ride great!
Hello,
I’m working on my 2019 Ram 3500 Cummings build(Tradesman edition, short bed.) I’d planned on doing the AEV dual sport suspension but the more I read I’m leaning toward the Carli Backcountry. My question concerns tires and wheels. I have the AEV Katla 17in wheels and 40in Toyo 40/13.5R17 121Q here in the garage.
I’m waiting for the AEV dual sport to come out sometime in April. As I’m leaning against it, is the Backcountry compatible with 40’s? I know there will be significant fender mods and I’m going to be replacing the stock bumper to accommodate.
Also, I need to keep stock towing and cargo as stock as possible as I’ll be towing my 12.5k fifth-wheel when not in the back country.
Hi Dennis, we’ve had customers install 40s. It takes significant fender modification AND clearance (cut and plate) the firewall. The rear will also require plenty of work to fit the 40s. If you want the best ride AND to keep the capacity, you can do the Backcountry with the Full Progressive Leaf Springs and the Long Travel Airbags.
Hi there thanks for all the great info! Think you have sold me on the Toyo’s and love the specs of the 315/70r18 MTs on my 17 power wagon just a little worried about the width. What kind of luck have you had with those on a + 18 to + 25 offset wheel?
Thanks so much!
I’d stick to the +18mm – the 25mm will be a bit too offset to the inside.
I have a 2018 Mega Cab 2500 Cummins. Looking for the best of the best for on and off-road. She’s my daily driver so I want good drivability but also want to take her anywhere I want. I am contemplating waiting for the Dominator to come out for my truck, but hearing that it’s more for off-road, my question is… Will I be sacrificing daily drivability with the Dominator, or should I just pull the trigger on pin top?
No sir, even for the guy that spends all his time on the road, the Dominator would be the answer for those not concerned with budget. It’s the best riding on-road system we offer but comes with a ton of off-road capability as well. It’s a lot to spend on a system that wouldn’t see dirt but that on-road 3.0″ King feel cannot be mimicked by any other shock package.
Hey Dan, I have a 2018 Ram 2500, I am currently running 35×12.5R20 Ridge Grapple F load, what tire pressure do you recommend? I am running you 2.5″ level kit.
Thank you for the help sir.
Hi John, we never recommend the F rated tires; they’re way stiffer than needed on these trucks especially in a shorter sidewall configuration like a 35 on a 20. They’ll likely be pretty stiff regardless but the 45 front 35 rear would be a safe bet.
I just purchased a 2019 F350 DRW Platinum. What size wheel and tire do you recommend for 2.5? 4.5?
Hi Rene, We recommend 35×12.5″ front, 35×11.5 Rear on Dualies for the 2.5 – 4.5″ 37×13.5″ for the front, 37×12.7″ for the rear.
Hello Dan
I Have a 2020 ram 2500 diesel with rear air suspension. I’m looking to do a few upgrades, will your pin top leveling system work with my rear air suspension? Also , what tires Do you recommend I install as I have 20 inch rims , I am looking to upgrade factory tires and ride as well. Please advise. Thank you
Frank
Hi Frank, We do not currently have any systems specifically designed to the fit the 2500 Air Ride Rear. Contact Top Tier Suspension at (636) 429-7020
Hello Dan
I’m running your Pintop 2.5” King Leveling kit with most of the upgrade options on my 2020 Ram 2500 Diesel. I upgraded my stock tires to the Nitto Ridge Grappler 35 X 11.50 X 20 LT on stock rims. Definitely a better ride for sure than stock. I’m thinking I want to go with 37‘s and possibly go with offset rims for better handling and to fill the wheel wells better with a bigger tire , what is your recommendation? Maybe 37X 13.50X 20. ? Thank you .
Frank
Hi Dan,
I have a 2011 ram 2500 5.7 hemi. It has a cheap “leveling kit” for now. (came with the truck) But I have a question with my tire pressure. I have 34 inch patagonia MTs right now. E load and am driving them at 60 psi all around. Based on the other recommendations, should I try 40f/40r?
Thank you,
Frank Jr
Hi Frank, I am unfamiliar with the Patagonia M/T. Being a hemi, you can likely drop to 40/35 if they’re an E-Rated tire.
I have a 2019 f-250 and gonna install 2.5 commuter kit. Rims are 20×9 with +12 offset. I plan on getting 35×12.5×20 Toyo RTs. Not sure whether to get E rated or F rated? What would be a good recommended psi for both tires?
Stick to E-Rated Toyo or Nitto, stay FAR away from F Rated.
Why do you say to stay away from the F rated? I just purchased a new 2018 Ram Cummins on Dec. 31st and the dealership had installed a 2″ spacer lift, XD 20’s and 35″ F rated Nitto Terra Grappler G2’s. I will be going with Carli’s 2.5″ Pintop soon!
F-Rated are excessive for the load capacity of these trucks. When overbuilt, ride quality suffers. E-Rated is the benchmark; they’re rated for more capacity than the factory axles while offering superior ride quality.
Great write up! Glad I found this before making my new wheel/tire purchase. I’m wondering what the specs of the wheels and tires are on the mega cab at the head of the article. Looks to have method wheels possibly? Thanks for your help!
Those are 20″ TR Beadlock Wheels, 38×13.5″ Toyo MT Tires.
2019 2500 Cummins
2.5” King pin top shocks level kit by Carli
35×12.5R18 Nitto Ridge graps load F!
18×9” -12mm offset with 4.5” backspace
Tire pressure?!
Thoughts?
Hey Matt, 40F,35R! We’re not fans of F rated tires but you already have them – the stated pressures will give the best ride of which your existing tires are capable.
2019 Ford F-350 crew cab, long bed, 2 1/2″ pintop with Carli radius arms.
18 X 9 wheels with 5 3/4″ back space, can I run 325 X 65-18’s with out rubbing?
I am assuming tire pressures 45 to 50 lbs, is that close to what you would recommend?
Thanks for the great article!
Hi John, for a 325 width, we recommend our Radius Arms and 5.5″ backspace. You MAY rub our radius arm at full lock with your current wheels but it’ll be minimal, if any at all.
Hi Dan,
2006 F350 CC 6.0 SB
Looking into the 4.5″ Backcountry. With the right wheel, will I clear 37″x12.50 or 13.50 w/o triming? TIA
You will need to trim, for sure but it won’t be much!
I have a 2005 F350 CCLB FX4 that I daily drive, tow a 25’ trailer and occasionally tow a dump trailer for work. I bought the truck with 35” Toyo MT’s on the stock wheels. Looking to get some Method Standards and I’m looking at a fully optioned 2.5” Commuter System. I have two questions, 1. If I go with the full leaf spring kit is it going to sag the rear end when towing the trailers? 2. Will it soften up the daily driving? The truck likes to dance with the extra stiff rear end. Are there any Carli reps up in the Bay Area? Thanks in advance.
Hi Mike, give us a call so we can run over the build! 888-992-2754
Hi,
I am installing a 4 inch radius arm lift kit on 2019 RAM 3500 SRW.
I have a 17x 9.5 with 4.5 backspacing & -18mm offset
Will I be okay to run a Toyo MT 37×13.5
Hi Spencer, What do you mean by a “4 inch Radius Arm Lift”? Do you mean you’ve done our lift with our radius arms?
Hello i have a 2017 ram crew cab diesel with 37×13.50r17 avengers whats the best psi
Hello, What lift and tires are you running?
Toyo rt and stock suspension on a 2.5 levelling
Currently I am running a 2″ spacer with shock extension on my 2018 cummins 2500. looking to go to Carli commuter. 4 door 4WD short wheel base. Due to work restrictions need to keep factory offset 20″ wheels. Was able to fit 37×12.5×20 tires with minimal rub at full lock. They are an F rated MT tire good for 3,970 @ 80 PSI. just curious what you recommend on the stock 8″ wheel for the best wear and ride.
Hi Don, Honestly, we don’t recommend F rated tires or 37s on 8″ wide. Also, 4,000lbs @ 80psi sounds like WAY too much pressure to achieve that load rating. Most D rated tires achieve 3,500lbs at 50psi… I would try taking the fronts to 45, rears to 35 and see how they do. The 8″ wheels will likely require slightly lower pressure to flatten the tread vs a 9″ wide.
Hello,
I have a 2018 F250 with a 6” lift, 37×12.5×20 Toyo Open Country M/T’s and about 22k miles on them. Should I have my psi set at 40f/35R as well? They’ve been running at 65 psi this whole time…
Hey Nick – we don’t make 6″ systems for that truck so i assume you have someone else’s lift. We tune our systems at these pressures but can’t speak to what others do. I would call your lift manufacturer as they may be able to provide you better information.
Hello, I just ordered 2020 F350 6.7 PS. I’ve been researching suspension kits for weeks and I’ve decide to go with the Carli system. What kit would you recommend for a tire/wheel set up 37″X12.5″ Toyo RT W/ Fuel 20″x 9″ wheels. Not sure of the offset yet but I only want 1 or 2 inch’s sticking past fender. This rig will be 70% paved road 30% dirt road trails. I will be towing a 10K trailer as well. Thank you for your help!
Hi Anthony, You could really run either lift height with that combo. 30% of it’s life off-road is a LOT of dirt miles – I’d recommend the Pintop with every option and the Long Travel Airbags to keep that trailer under control.
Do ya’ll have any experience running the Cooper Discoverer AT/3 XLT’s? I have looked at the Falken Wildpeaks but their 35×12.50R18 tire is actually 13″ wide and are recommended for a minimum of a 9″ wide wheel. I’m running stock 18″x8″ wheels on a 2011 F250 with 2.5″ Pintop (full rear replacement).
We do not, sorry!
Hello. I have a 2008 F250 CCSB with the off-road package. I want to make it more capable off-road but still retain it’s load capacity. I plan on towing a trailer with it and possibly getting something like a 4Wheel Camper (Hawk Model). I am thinking a 2.5″ lift with 37s. I was hoping you could provide some guidance on the suspension set up (budget probably limits to Backcountry at most) and wheels(size and backspacing) and tires?
Hi Heath, that can go a few directions – give us a call to run over the build! 888-992-2754
Hi guys
2016 ram 3500 with your leveling coils and shocks. Running the factory black 20’s with a freshly mounted set of Falken MT01 35×12.5
Recommended tire pressures are set to 45/40 but what about when we are pulling our 29 foot pull behind camper? Should they be maxed out?
Also do you have any recommendations for the rear when hooked to the camper as I’ve noticed the rear is squatted quite a bit.
Hi Doug, Max the tires when hauling, yes! As for tow capacity out back, you maintained your factory with that system – you could look into a load distribution hitch (if not already equipped) or airbags. Call to discuss!
HI 2018 Ford f -250 6.7 4 by 4. what would you recommend gonna put a 2.5 lift kit which one?
should we stay with the factory 18″ Wheels or 20″ ? and tire size please? we have a Travel Trailer want to keep a good ride. thanks for your advise.
Give us a shout! 888-992-2754
I have a 2017 f250 running the Carli 2.5 back country kit. With Toyo open county 37×13.5R18 with a load range D.
What do you recommend for tire pressure for on road and desert running in Barstow? Also is the pintop for the 2.5 worth it? Or should I upgrade it to the pintop 4.5?
I feel like I am at a pinch because I can easily change it to the 2.5 pintop but just upgrading the shocks or just change the entire suspension system out.
Thank you for your reply in advance. I read the entire article and the comments, I could not find a question close to mine.
Hi Brandan, 45F, 40R on the D-Rated. When out in the dirt, I run 25 front, 20 rear. The 2.5″ Pintop is a runner – i don’t think you should upgrade on performance basis but, if you’re looking for the extra height, that’s the only way to get it. The 2.5″ pintop will absolutely hold it’s own again the 4.5″. It’s actually more controlled with less body roll.
Hi Dan – I have a 2015 Ram 2500 Crew Cab 4×4 Cummins with the Backcountry Suspension. I currently have Toyo ATII tires 35×12.5×20 on XD Wheels, everything you have said previously about the ride quality is spot on. I’ve ordered some Method CJC Special wheels 17×8.5 and have started shopping for 35×12.5×17 tires. Discount Tire gave me a bunch of grief about the Load Index rating, saying the OEM 285/60/20 were a 125 and that all the tires I was looking at are 121 and a “no go” from them. Is really an issue? The GVWR is 10000, adding the weight rating of the 121 tires puts me 2788 lbs over the GVWR! I’m looking hard at the Falken AT3W or the Toyo AT3’s.
I’d appreciate your thoughts and recommendations.
Thanks – Marty
My opinion, these massive tire chains put crazy restrictions on what they will and won’t install on trucks in an effort to cover their asses. I get it, but don’t agree with it. I run C-Rate 38×13.5″ Falken MT on my 2003 Ram 2500 with no issues. The most important factor is that, at max pressure, the tire can support the max load of your vehicle. Pretty much anything over 3,500lbs @ max pressure (regardless of whether this load rating is achieved at a D Rated 50psi or E/F rated 65-80psi) will be acceptable on these truck.
Hi Dan, I have a 2019 Ram Power Wagon and recently purchased the 2.0 Back Country system with the optional sway bar and steering stabilizer. Will 37×12.50’s on a 17×9 or 18×9 wheel with +18 offset work with stock radius arms? Would fitment be good or will I need to trim anything? Would this look good on this truck or should I stick with 35×12.50’s? Thanks for your recommendation’s.
Hi Will, those 37×12.5″ will fit great on either diameter wheel so long as you stick to the +18mm; yes, this will clear the factory arms only requiring MINIMAL if any trimming. Stick with 37s!
Hello: I have a 2020 Ram 3500 SRD Megacab with factory 20″ wheels. I ordered the full Carli suspension system front and back due to the factory air bags. My question is tire size? ( I’d like to keep the factory wheels although I am not married to them). What tire would you recommend, I’d like to run either a Toyo or Nitto Tire, 35″or 37″. No wider than 12.5.
Hi Joe, factory wheels will limit you to a 35 – we’d recommend a 37×12.5″ on a 9″ wide wheel with a +18mm offset.
what wheel is that?
Which of the three trucks are you referring to? They all have different wheels…
Hi Dan, 2020 Ram 2500 here. Really wanting to run 37×12.5×20 with 20” wheels. What kit would you recommend and what offset would you recommend. I don’t want to have to trim much if at all. Also will the kits for the 14-18 Ram 2500 fit with minor adjustments? I’ve heard rumors they will, but would like your feedback. Thank you!
Give us a shout at the shop 888-992-2754 or info@carlisuspension.com – there are always follow-up questions and that’s best had via phone/email.
2019 Power Wagon with Pintop.
What wheel and tire would you recommend?
Thinking 17” 12.5s with 37s?
17s are great – stick to 9″ wide, 5.75″ backspace. You can run a 13.5 or 12.5, personal preference, really!
I have a 2020 Ford F-250 Limited I want to put eight 3 1/2 inch lift suspension on it with 20 inch with that 20 x 9 rims and tires 37 x 12.50 x 20. Will it fit or will it rub
Hi Jerry, specific tire fitment can be found on each system page! Scroll to the bottom of the description to find this information.
Hey Dan,
You’re a machine! Just scrolled through all the posts! (Whew!) I’m on the fence and need your experienced opinion. 17′ F-250 6.7L, 2.5″ Backcountry, Sway bar with endlinks, full leafs, and high mount. (Just ordered……) Looking to go with NV 305 wheels for 37×12.50x??? RT tires..
Questions: 1. 17×8.5 or 18×9 wheel 2. When are new backcountry kits shipping. (Ordered today form CJC)
All in a day’s work, Kevin!
1. I like 17s as they’re more cost effective and have a larger tire selection. 18s are getting better but the tires selection is still limited and substantially more expensive than their 17″ counterparts.
2. Hit up CJC, they’ll be able to tell you where you are in THEIR line. We have several rounds of shocks inbound for our stocking retailers and only they know on which one you’ll fall. That said, it’s looking like early September is when the next round are due at Fox.
2016 F250 on factory 20″ rims. Installing the 2.5 commuter kit to attempt to tame this forklift like ride on the concrete interstates and buckling roads of south Louisiana. The site says a 37″ tire is best for the 20″ wheel. What minimal trimming is required to run a Toyo OCRT 37″? Or should I just stick with the 35″ tire. Also the tire comes in 12.5 or 13.5 wide. Which would provide the best ride?
Hi Keith, we do not recommend oversized tires on factory wheels as they will rub the brake lines and sway bar. If you’re going with a 37″ tire on an aftermarket wheel as we recommend, I like the 13.5″ wide for a more square profile. It does better with lower pressure.
I just recently ordered a set of 18×9 +18 Raceline wheels with 35×12.50r18 Cooper Discovery AT3 Xlt’s (load range E) that have a load rating of 3415lbs at 65psi. Doing the math it sounds like I should be around 45F/40R for optimal ride quality while unloaded. This is on my 2020 Ram 2500 Megacab Cummins with Carli commuter 2.5” kit. Does this sound right to you guys? Any recommendations to keep the TPMS light off at these pressures? Thanks in advance!
Great write up
I have a 2017 F350 crew cab long bed FX4, what leveling kit would you recommend?
I do not off-road often but do go to the dessert and tow a 15k 5th wheel and have air bags.
I want to fit 35s, can I also use the stock rims?
I was favoring the back country kit.
Also I live in So Cal and do drive the messed up highways.
Hi Terry, I would recommend the Commuter for what you’re doing. The Backcountry should work great for you as well but it’s unlikely you’ll see the potential on those shocks with stock F350 rear leaf springs and airbags. 35s will require aftermarket rims or wheels spacers to avoid contacting the sway bar and brake lines. 5″ Backspace is ideal…
Dan If I go with the backcountry What leaf spring set up should I use to help with the stiff ride in the rear when not loaded and not sacrifice the load capacity?
Hi Terry – on the F350, DEFINITELY go with the full leaf springs. My recommendation would be to do the 4.5″ in Backcountry with the Full Springs and Long-Travel Airbags. This is our best riding system. If you do the 2.5″ system, the ride is a touch stiffer and you won’t be able to run our airbags as they’re only available in the 4.5″ lift height.
Dan
I appreciate the advice but I Park my truck in the garage and anything more then 2.5 it will not fit
Thank you,
Terry Reagan
Hi I have a 2017 f250. Looking to put a commuter 2.5” kit on. Can I run the deaver springs with the commuter shocks? I’m also going with 295/65r20s for tires, not wanting MTs because of noise. What is the smoothest tires to run for comfort?
Hi Will – The Deaver add-a-packs are designed to run with the Commuter, the full progressive spring options are only compatible with the Backcountry and up! Smoothest tires are Toyo MT, in my opinion.
Dan, great article which continues to remain valid. My question, is more a confirmation. Lots of questions regarding 37”, not much on 35”.
I have a 2017 RAM 2500 Power Wagon. I’m running 35×12.5×17” Toyo AT3s on stock OEM wheels and stock suspension. Confirm with daily payload that 40F/35R is sufficient? I think so? Thank you.
Hi Russ, sounds perfect for a PW. On a diesel, I’d put the fronts at 45 but 40 should be perfect on your hemi!
Hi Dan, Thanks for the great article with lots of great information. I live near Tahoe where snow is frequent and deep during the winter months. I appreciate your recommendation for the Toyo MT tires, but I was wondering if you have any recommendations for a 35×12.5×17 tire that will ‘work’ in snow? Most MT tires don’t work too well in snow – do you have any experience will the Toyo MT’s in snow?
Regards
Andrew
Hi Andrew – We’ve, and customers, have enjoyed both the Falken AT3W and Toyo AT3. Customers living in climates seeing consistent snow often choose a tire with a more narrow profile – a 295/70 for example. Not the best choice for ride quality but the traction, thereby safety, should be prioritized.
Hi, I recently purchased your 2.0 Commuter Kit with progressive add a pack rear leafs for my 2006 F-250 crew cab long bed. I initially misread your description and also ordered 5.5″ backspaced 17″ wheels instead of 5″ backspace with 37″ Falken WILDPEAK AT3W tires. I understand I’ll have to trim the inner wheel wells to fit the larger tires but how much interference will I experience with the stock radius arms? I don’t have the funds to upgrade currently. Can I simply not turn lock to lock to avoid rubbing the arms? Perhaps .5″ spacers on the wheels which I’m really not fond of. Thank you in advance for any advice you can provide.
Hey Matt! 5.0″ is actually further out than a 5.5″, not further in. You’re good; you’ll need to trim a very similar amount to fit a 5 and 5.5″, the good news, NEITHER will rub the radius arms.
Hey there, I have a 2017 F350 SD, 6.7 PS. Currently running the Carli Commuter 2.0, with steering stab, brake lines, etc. I’ve had a set of Black Rhino 20 x 9 (+12) wheels on it with …(yes, I found out the hard way) a set of 35 x 12.50 Toyo R/T F rated tires. ….. Got 45,000 miles out of them, and I felt most of them Time for new tires. My question is, after all the above info about 20” vs 18” wheels, can I move up to a 37 x 12.50 E rated tire on these current wheels? A test fit BFG Km3 looks like it will clear with the possibility of a very slight rub on control arms at full lock. Didn’t touch in the shop, but I’m guessing aired down it might. Will it help the ride quality enough? Or, should I save some more and re-do the whole package with the same wheel in 18 x 9 +12? Also, psi’s – 45F and 40R??? Thanks a lot!
Hi Kay – The 37s will be a noticeable difference, for sure! Going to an 18 with a 37 would be even better. My recommendation, 18×9, 37×13.5 45F, 35R!
Hi Dan,
Bought the 2.5 pintop with everything minus the radius arms (future add on since they look sick) and your Deaver full progressive springs for my 19 3500 longbed. I read it decreases to 15% of 2500 capacity from your website or a light 2500 capacity. Was that a typo and only decreases 15% of the 3500? I’ll add your LT airbags later.
Also, made a mistake and bought 37×12.50×17 D rated nitto ridge grapplers instead of the E rated, should I send them back and get the E rated instead or send it and get E rated next time?
Great write up by the way.
Hi Jose – the long-travel airbags will ensure you maintain factory capacity. That’s not a typo, the leaf spring packs are classified as a “light 3/4-ton” pack. The payload reduction on a 3500 is significant without the airbags. As for the D vs. E rating, the load index on the D is likely OK if the tire shop allowed you to leave with them installed but you’re going to want to look at their max load at max pressure vs your payload to make sure prior to loading the truck!
Been doing a lot of research as well as watching all the YouTube videos on Carli suspension. I plan on going 4.5″ Back Country on my 2019 F-250 with all the fixings and a full leaf spring package. I plan on running Nitto Ridge Grappler 37″x13.5″x18″ with a 18″ Method wheels very similar set up to your new 2020 tremor setup on YouTube, that truck has 38″ tires however. I wanted something that was comfortable to daily drive but also go out desert riding with family and friends. Wanted a soft tire that did not have a lot of road noise and figured this would be the best setup. Thoughts on the setup? Now I am just looking for a shop that I can do the build as well as add some other essentials I’m looking for.
Hi John – You nailed it! The 4.5″ Backcountry with the Full Progressive Leaf Spring Packs will be our softest riding package. Combine this with a 37 on an 18″ wheel and you’ve maximized the ride quality of the platform!
I just ordered a Pintop 4.5 for my 2012 F-250. Your radius arms seem to be on backorder so I was going to go without them for now. I am wondering if there is good wheel choice that may rub at full lock with factory arms but would then work fine when I ordered your arms. I am finding a lot of 17×9 wheels with 4.75 backspace but struggling to find 5-5.5 like is suggested. I want to run the Toyo 37,13.5,17 M/Ts. Any advice on exact wheel size to run in my situation? Maybe even some wheel examples?
Hi Matt – A 37×13.5″ on a 9″ wide wheel with 5.5″ backspace (+12mm offset) will rub the factory arms at full lock but will clear ours once installed! TR Beadlocks will make you this exact wheel.
Hey Carli,
I have a 2020 gas f250. Im in the process of getting your 3.5 pintop leveling kit. I want a wheel and tire package that would be as flush with the body as i can get while still looking good, its very easy to get a ticket for tires that are wider than the body where im from. After lots of research I’m liking the arsenal black rhino wheels in 17×9.5 with a +12 offset and im looking to go with 35×12.5 mickey thompson tires as they are available at a store near where i live. My question is will this combo rub and will it clear the break lines?
Hello Salem – It will be tight to the brake lines but should not rub if installed correctly!
I have a 2020 power wagon with 35×12.5r17 toyo rt’s on stock wheels and stock suspension. What pressures would you recommend. Also what suspension upgrade would you recommend for daily driving.
Hey Bradley – Give us a call at the shop and we can discuss this one! 888-992-2754
2005 Ram 3500 5.9l QQLB, Backcountry 2.0 (Bilstein remote reservoir), control arms, full progressives
Great write up! Dropped pressure 10psi from where I was at (55/50) to 45/40…Made a huge difference in ride quality and still wearing evenly 30,000 miles later.
35×12.5 Yokohama Geolander M/T G003
17×8” wheel
Hey guys,
I have a 2018 Ram 2500 Cummins. Looking to install the leveling system (just shocks, springs, adjustable track bar and radius arm drop backet) and running Toyo 35″x12.5 E Open Country M/T on Black Rhino Arsenal 18×9.5 +12 offset. Do you foresee any issues with this setup and are the radius arm drop brackets necessary/compatible with stock radius arms? Thanks!
Hey Grayson – That’s a perfect setup. The radius arm drop brackets will allow you full caster adjustment range. I wouldn’t say they’re necessary but would be a nice addition as they’re fully compatible with the factory arms and the leveling system.
Hey Carli – Do you have a go to wheel recommendation for running a 35″ tires on my 2019 Ram 2500 Cummins with your 2.5 Pintop leveling kit that requires zero trimming?
Hi Matt – The recommended +18mm offset should net you zero rubbing with a 35″
Hey Carli,
I have a Dodge 96 12v 4×4. Im purchasing the performance 2.0 system with the full leaf pack and control arms. Im looking at getting Method NV 17×8.5 with 4.75 backspacing with 37’s on top. I cant decide if i should go with a 12.5″ tire or 13.5″ tire. Any recommendations? If they both work on this setup, what do you recommend and why? Thanks,
Larry
Hi Larry – the second gens are tougher with tire clearance, i most always recommend a 12.5″ wide tire. On an 8.5″ wide wheel, do a 5.5″ – 5.75″ backspace, NOT a 4.75″, that will make rubbing way worse than it needs to be.
Hey Carli, 2017 Ford F250 XLT Premium crew cab 6.7L. Carli Signature 2.5″ coil level kit with track bar, sway bar drop brackets and matching rear signature shocks. I’m running LT285/75R18 Nitto Ridge Grapplers on the factory 18″ wheel. PSI 50F and 45R for daily driving and max 80 PSI while towing my 7000lbs travel trailer? Thanks.
Hi Jonathan – those pressures actually sound pretty good for that tire!
I have a 2011 F250 with the 2.5 pintop. Currently running Faken 35×12.50R17 on 17×9 wheels, 40 psi front, 35 psi rear. I am looking at getting heavy duty ranch hand bumpers front and rear. Do the tire or shock pressures need to be adjusted for the added weight?
I am so glad I found this thread! I have a 2006 F350 4X4 Crew Cab (single rear wheel). After considering the price of a new truck, I’ve invested in another 100K miles out of this one. After major engine rebuild (ARP head bolts, head gasket gasket, injectors, EGR) it runs beautifully.
Two weeks ago, the truck needed a major rebuild of the front axle done. My tires were shot, so I had them install new wheels (Method 18″ with + 18 offset) and Nitto Ridge Grappler tires 35X12.50XR18 (load range F). When I got the truck back it drove HORRIBLY at highway speeds, pulling side to side unpredictably, at times even feeling like a wheel was coming off. Took it back to the shop, they were sure a new steering gear would fix things, so a new heavy duty Redhead steering gear was put in. Got it back today and it drove as bad or worse with the tightened up steering.
I just found this very helpful article! Found out tire pressure is at 80 psi. Tomorrow, I will back off to 40 psi in the front and 35 to 40 psi in the rear when unloaded and 65 psi in the rear when loaded. Does that sound about right?
When this is resolved, I want to put a front leveling kit on the truck. I do mild off-roading (hunting) and tow near max rated load. Which leveling kit would you recommend for best price/performance? Would the leveling kit be reason to just switch back to E rated now?
Hey Jim – Good to hear you’ve breathed some life into that old Super-Duty! For your application, I would look into the Backcountry Leveling System with the Progressive Add-a-Packs in the rear. Click on the hyperlink to view and configure this system.
Personally, i hate F-Rated tires but not enough to throw them out. Wear them out and switch to an E or high-rated D for the best ride quality!
Hi I have a 2019+ Ram 1500 and I’m currently on 315/60r20 Toyo RTs. My next setup I’m looking at dropping to 18s because of what you guys said about ride quality. Would you recommend 35×12.50r18 Toyo MT E loads, 315/70r18 (36”) Toyo MT E loads, or go all out and throw on some 37×13.50r18 Toyo RT D loads? The first 2 would fit on my current lift. The 37s I would have to raise the truck though. Thank you!
Hi,
Just bought your 4.5 pintop (with full leafs and radius arms, waiting for sway bar to come in) for a ‘17 F250 PS. Currently running 18×9 Method Mesh’s and 37×13.5R18 Toyo MTs. What pressure do you recommend given they are D-rated (E rated wasnt available in that wheel size). Max PSI is 50, currently have all set at 40 psi.
Thanks!
Hi Michael – 45F, 35R!
Hey,
I have a 2020 F250 6.2L gas with the Carli Commuter. Running 35×12.50 E rated Nitto Ridge Grapplers on 18×9 wheels. Is 40F 35R what I need to run? Thanks
Adrian
Hi Adrian, that should work great for your gas-equipped truck!
I have a 2019 Ford F-250 with the 2.5” backcountry kit and torsion sway bar. I’m getting 17×9 race line wheels with a -12 offset. Can I still run 37-12.50 on those wheels with minor trimming?
Sure can!
Good Morning, thank you for the awesome products you engineer and sell. I have a 2011 RAM 2500 with your Dominator 3.0 setup with full rear leaf spring pack installed and normally run 37 /12.50 18 Nitto Ridge Grapplers on 18 x 9.5 method wheels.
We are taking a long road trip out West to the NP’s so I recently switched to 35/12.50/18 COOPER Discoverer AT3 XLT tires that are E rated just for the trip to increase stopping distances, reduce un-sprung weight, better handling, etc.
What recommended tire pressures (Front/Rear) do you all recommend for what will essentially be highway driving?
Thank You.
45F, 35R
Good afternoon,
Thank you for all o the information provided in this article.
I have an 03 Dodge 2500 diesel with the 3″ Backcountry system with the high clearance control arms. I know the kit says 37’s will work, but it doesn’t discuss width. Would you suggest 37×12.50 or 37×13.50? My wheels are 18×9 with +18 offset and I’m upgrading from my current 35×12.50’s now that I have the suspension installed.
Thank you for the help.
Hi Allen – 12.5″ will fit better but 13.5″ will fit if you’re willing to cut some additional pinch weld.
Dan – Thank you for the quick response. 12.5″ it is. The difference in the ride between stock and the Backcountry was impressive. I couldn’t be happier with the products and service that I’ve received from Carli.
Thanks again,
Curious for a set-up in winter driving Montana, I have a power wagon 2016, ready for trade to 3500 platform – diesel, leaning towards Ford this time, like the looks better. Either way Ford or Ram, the extra width of tires in snow/ice makes for slick trucks, smaller width equals more sq. inch pounds to road surface. Just looking for your opinion. I may have found a local shop for install of Carli system too.
Thank you,
Don
Hey Don – Feel free to call in, we can go over this in detail! 888-992-2754
Glad I stumbled onto this blog post!! I have a 2019 Ram 2500 diesel, coil rear springs. Was looking at the standard leveling kit, or the pintop leveling kit, and trying to decide between 35 and 37 tires. Need an E rating or better, have a 10k lb toyhauler (bumper pull) that I haul up and down the mountains here in Colorado. What would be your ideal setup?
Thank you,
Joe
Hi Joe – Ideal setup is a 37″ Tire, E-Rated, on a 17×9″ wheel with +18mm offset. My favorite is the Toyo MT.
2007 f-250 CCSB. CARLI 4.5 commuter
Hi what is the best wheel to run with the 4.5” commuter lift. Wheel specs backspacing, offset, rim width for this truck?
I will be running a 17” wheel with 37’s.
Thank you.
Hey Jacob – We list all this in the product’s description:
Factory Wheels SHOULD NOT be run with oversized tires. They’re known to rub the radius arm, sway bar and most concerning – Brake Lines. Factory tires and factory wheels will work without issue but we DO NOT recommend running oversized tires on factory wheels. On our 4.5” Ford Systems, we recommend 17”-18” wheels, no more than 9” wide with 5” of backspacing with a 37”, E-Rated Tire. The more rubber, the better the small bump compliance will be at proper inflation pressures. The ride will firm up as you go larger in wheel diameter. For more details, see our article on wheel and tire selection and tire pressures:
Have the 3.25” Pintop fully optioned kit coming, for 2020 Mega Cab w Air ride. I picked up 20×10” wheels with 35”x12.5 Toyo ATIII. Everything still at my mechanics shop, waiting on the Pintop kit to ship. It’s my daily driver, on Alaskan highways. What pressures should I maintain?