35 or 37`s What To Do?

[MattG]

This is the article that had me thinking hard about 37`s. https://news.pickuptrucks.com/2019/...ladiator-with-10000-in-mopar-accessories.html

This article is so worth the read. Thanks for posting it here.

Sponsored

 

[bigbeerdrinker]

Would 35`s be a good idea on stock Rubicon rims?

I am interested in this as well

 

[spazzyfry123]

Don't forget the D44s in JTs are larger and thicker (by 10mm) than JLs. I run 37s on both my JTR and my JKUR and have never seen a problem, and I DD them, rock climb them and have been around plenty of 37s on stock D44s for years....rarely ever seeing a problem. Any problems I have seen have been heavy feet, avid offroaders or accidents. Both my JTR and JKUR axles and axle housings are completely stock...except the rear axles on the JKUR that ended up with bend axle flanges while running 35s several years back. So it has forged axles back there now.

I didn't hesitate for a second to add 37s, which I added 30min after driving off the lot. I've put 4600 miles on it and its been on road trips to CO from TX (20mpg) and rock crawled in Texas....all without an issue at all.

I think if you're wanting 37s then you'll regret going 35s. With KO2s I have no audible road noise over stock, admittedly I only had about 10 miles on my stock tires but I paid very close attention on the freeway knowing this was the case.

I've seen this a few times now and always think it looks great.

Did you do any spacers or modifications to get the 37s there and fully functional? I've heard people say you need to get rid of the front bumper "wings" and possibly put some spacers for full articulation and the wheel turned.

 

[LongTimeListener]

I am interested in this as well

35s will be fine on stock rims, although they'll look a little doughtnut-y. You may also see a little increased wear vs properly sized rims because the rubber is being stretched differently.

 

[BLK HOLE]

I've seen this a few times now and always think it looks great.

Did you do any spacers or modifications to get the 37s there and fully functional? I've heard people say you need to get rid of the front bumper "wings" and possibly put some spacers for full articulation and the wheel turned.

Thanks.

I did not use spacers. For DD'ing it doesn't rub anywhere at all. I have a stock lift too, for now. It does rub some at full articulation when wheeling, but not enough to damage anything...just leaves rub marks under the front fenders, which is nothing spacers would help with...in fact they might hurt if they get the tire rubbing on the outer lip of the fenders. Nothing needs to be done to the bumper at all.

 

[bigbeerdrinker]

35s will be fine on stock rims, although they'll look a little doughtnut-y. You may also see a little increased wear vs properly sized rims because the rubber is being stretched differently.

Thanks...I was just trying to see if I could save a little dough by not having to by wheels. That was such a silly though...I know darn well that I should just do it the right way.

 

[m38a1w225]

i daily drive my JT.
Mopar 2" lift
.75 RE spacer up front.
17x9 fuel wheels
37x12.50r17 toyos.

went from 19 mpg to 17.5

i have HD towing 4.10 wide axles

 

[smoverland]

Daily drive mine with 38x13.5. The transmission moves them easily and the brakes still feel strong. Sport w/ Max Tow (wide axles, 4.10s). Drives infinitely better than my JKU with 35s and 3.73s.

 

[EmergencyMatt]

Trying to make a smart choice here. Really like the looks of the JT Rubicon with 37`s over 35`s both stock height and with the Mopar 2 inch lift. My concerns are drivability, every day city and Hwy, towing and reliability with 37`s. Will 37`s put to much strain on the stock drive train? I do not plan on doing any hard core off roading with the JT just mild stuff i have another off roader for the gnarly stuff.

Any JT owners with 37`s please share your experience. Thanks in advance.

So much hate for 37’s... for me it was an easy choice, I have tire size envy. I daily and highway drive my rig. Been on a bunch of technical trails in Colorado. And so far no issues, and yes I will be beefing up my suspension stuff soon to handle all the extra weight... I’m super impressed with my JT and what it can do with the 37’s. Glad I went that way.

No technical info for you but I love the 35s with a 3in Mopar lift.

 

[willemlock]

I'm running 35's on mine and I've been hitting some hard rated trails in California. My next set will be 37's. My concern was the factory warranty. Jeep will honor the warranty when you run 35's but 37's and up they will start asking questions... Given how new these are I wanted to give it some time and let people with more money than me run it for a year or two lol. What I would like to see now is the difference between 37x12.5R17 and 37.13.5R17 fitted to a 9.5" wide rim.

 

[RH 67]

I'm running 35's on mine and I've been hitting some hard rated trails in California. My next set will be 37's. My concern was the factory warranty. Jeep will honor the warranty when you run 35's but 37's and up they will start asking questions... Given how new these are I wanted to give it some time and let people with more money than me run it for a year or two lol. What I would like to see now is the difference between 37x12.5R17 and 37.13.5R17 fitted to a 9.5" wide rim.

I was planning on 35`s but Jeep mounting 37`s on the JT got me thinking why would they promote this if it were not ok. https://news.pickuptrucks.com/2019/...ladiator-with-10000-in-mopar-accessories.html

 

[BullDogge]

I didn't realize until reading that article that if you bought 10k in jeep accessories that you got a free set of 37s for the build. Hell of a deal right there.

 

[Etoimos]

I'm running 35's on mine and I've been hitting some hard rated trails in California. My next set will be 37's. My concern was the factory warranty. Jeep will honor the warranty when you run 35's but 37's and up they will start asking questions... Given how new these are I wanted to give it some time and let people with more money than me run it for a year or two lol. What I would like to see now is the difference between 37x12.5R17 and 37.13.5R17 fitted to a 9.5" wide rim.

I ran 13.5" on my JKUR for the first set of 37s I had. Fro the second set I went back down to 12.5". I really like the look of the wider tires, but it was just not worth the extra weight and wear and tear. The 13.5" used a lot more rubbing and pinch seam cutting, even with a 4" lift and full upper and lower adj. control arms. I have no idea if that will hold true on a JT, but just something to look into before getting them.

 

[hawkijon]

Don't forget the D44s in JTs are larger and thicker (by 10mm) than JLs. I run 37s on both my JTR and my JKUR and have never seen a problem, and I DD them, rock climb them and have been around plenty of 37s on stock D44s for years....rarely ever seeing a problem. Any problems I have seen have been heavy feet, avid offroaders or accidents. Both my JTR and JKUR axles and axle housings are completely stock...except the rear axles on the JKUR that ended up with bend axle flanges while running 35s several years back. So it has forged axles back there now.

I didn't hesitate for a second to add 37s, which I added 30min after driving off the lot. I've put 4600 miles on it and its been on road trips to CO from TX (20mpg) and rock crawled in Texas....all without an issue at all.

I think if you're wanting 37s then you'll regret going 35s. With KO2s I have no audible road noise over stock, admittedly I only had about 10 miles on my stock tires but I paid very close attention on the freeway knowing this was the case.

Did you have to run a wheel spacer to use the stock wheels with those tires?

 

[TlukeTX]

Trying to make a smart choice here. Really like the looks of the JT Rubicon with 37`s over 35`s both stock height and with the Mopar 2 inch lift. My concerns are drivability, every day city and Hwy, towing and reliability with 37`s. Will 37`s put to much strain on the stock drive train? I do not plan on doing any hard core off roading with the JT just mild stuff i have another off roader for the gnarly stuff.

Any JT owners with 37`s please share your experience. Thanks in advance.

I have 35s and they run great. They look substantially better than the 33s and did not sacrifice any comfort in the ride at all. I have the Rubicon and did not make any adjustments to the ride height (leveling or lift). I have no issues lock to lock. I did lose a little fuel economy but not too terrible. I too was concerned with the ride of the 37s. I don't think you get any substantial increase in capability or looks by going to the 37s as compared to the drive comfort loss.

Sponsored