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35s or 37s?

Otaypankey

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Hopefully picking up a rubicon form Travis in NC in the next 2-3 weeks. Planning to add 2 inch lift. Can’t decide on 35s or 37s but leaning 37. This is my first Jeep so not a lot of 4x4 experience. Thoughts?
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guntrust

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watching this thread as it mirrors a question i have--concerned about safety, stability, steering play
 

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If your already considering 37's go that route. From my past experience if you settle for 35's for one reason or another you will end up with 37's not too long after.
Everyone's different but I've made that mistake on a few Wranglers, and I always ended up with the tire size I initially wanted.
 

Brandon W. Snyder

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IMO 315/70R17 is the perfect combo. Jeep recommends additional equipment when installing 37’s. If you’re not wheeling weekly and it’s your daily driver I’d stick with 35’s. 37’s unequivocally put a great strain on the drive tran components. Premature wear is a matter of when not if. 37’s also require more upkeep. 0.02

For reference:

BFG KO2 315/70R17: actual diameter is 34.4 @ 64.5lbs each

BFG KO2 35x12.50R17: actual diameter is 34.5 @ 66.3lbs each

BFG KO2 37x12.50R17: actual diameter is 36.5 @ 69.5lbs each

I did the 315/70R17 option. It looks great without a lift or changing the engineered geometry of the drive tran. No bro dozer look. It’s only .1 smaller than a 35x12.50R17 and weighs a little less. Maybe I’m cautious but I daily drive and do moderate wheeling. I will get everywhere anyone else is running on a trail. Driver input is everything. 37’s are out of the question for me, not worth the extra wear and tear or $$. Full disclosure, I may have opened a controversial can of worms.:idea:

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ClawSS

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IMO 315/70R17 is the perfect combo. Jeep recommends additional equipment when installing 37’s. If you’re not wheeling weekly and it’s your daily driver I’d stick with 35’s. 37’s unequivocally put a great strain on the drive tran components. Premature wear is a matter of when not if. 37’s also require more upkeep. 0.02r and tear or $$. Full disclosure, I may have opened a controversial can of worms.:idea:

021A7CBF-ABDE-4C5C-AA88-02A6AA4E9019.jpeg


B2E7E04C-63F4-4864-BDC1-DBA0734131EB.jpeg

Are you lifted or stock height?
 

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lucky7t

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I went 35’s for these reasons
1. Mopar recommends the 35 with their 2 inch lift
2. My JT came with 4.10 gears and I don’t feel those are adequate for 37’s
3. Personally I like the look of the 35 with the minimal lift over the 37
4. I tow with mine .
5. From past experiences with friends I’ve seen 37’s tear a front end apart. Now we actually use our jeeps hunting , trails etc.

Had 35’s on my last 4 jeeps . Buddies had 37’s and I think they look cool but not for me.

Now if I changed gears , trusssed my housings , 4 inch lift then oh yeah I’m going 37’s.
 

lookitsadam

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On my JLU I went 2.5in lift with 35s, but for my Gladiator I plan 3.5 or 4in lift with 37s. I think with the added length of the Gladiator you need to go slightly bigger to get the proportions look right.

Also, I would only go 37s on a Rubicon. For anyone with a Sport or Overland I'd stick with 35s.
 

Digger70

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Hopefully picking up a rubicon form Travis in NC in the next 2-3 weeks. Planning to add 2 inch lift. Can’t decide on 35s or 37s but leaning 37. This is my first Jeep so not a lot of 4x4 experience. Thoughts?
What gears does it have, 3.73 or 4.10?
 

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Pat2Alaska

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I went 35’s for these reasons
1. Mopar recommends the 35 with their 2 inch lift
2. My JT came with 4.10 gears and I don’t feel those are adequate for 37’s
3. Personally I like the look of the 35 with the minimal lift over the 37
4. I tow with mine .
5. From past experiences with friends I’ve seen 37’s tear a front end apart. Now we actually use our jeeps hunting , trails etc.

Had 35’s on my last 4 jeeps . Buddies had 37’s and I think they look cool but not for me.

Now if I changed gears , trusssed my housings , 4 inch lift then oh yeah I’m going 37’s.
I went with 315 70R 17 tires and will have the Mopar lift soon. Agree with @lucky7t on reasons.
 

Brandon W. Snyder

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There’s some good discussion being had here on this topic. I don’t remember reading anywhere or seeing any video that Jeep recommends a 2” lift with 35’s. I do specifically remember reading and seeing that the Rubicon can run 35’s without a lift, but any size after that a lift is recommended. It actually seemed like Jeep was proud you could run 35’s with no lift and marketed the fact that it didn’t need anything extra. Like more of an option vs. recommendation for 35’s. Maybe I’m delusional.
 

BuiltRight

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I went with the 35's for the reasons most above me have posted.

I actually opted to go with the BFG KO2 in 317/70r17, which as noted above is a touch (.1in) smaller than their 35x12.50r17. It is a bit wider, though. Most importantly, it's a C load rating tire, which I run on my full size truck and have been very happy with. I've got about 1000mi on them now, with a small level in front (sport s w/ max tow) and am thrilled with the way they drive.

I can't deny that 37's look killer, but I haven't yet looked at my truck and wished I had went bigger than 35's, especially knowing that the 35's will do what I need without unnecessary adding wear and tear.

 

G8R

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I am in the 35 with 2" lift group.

I am not a rock crawler in general but need that capability infrequently. I want the clearance that the lift and tires bring in regards to break over. I am a dedicated big game hunter and get deep into the CO-UT-WY backcountry when the weather is shit so I need to be able to chain up and run through deep snow and mud in rough and steep terrain. For this first year or so I will keep my rig stock until I wear off my 33s. Then I plan to convert.

I am also seriously considering just adding the 2 inch lift and keeping the 33 mudders since they are SO MUCH CHEAPER when I can purchase replacements from all you bigger tire guys pretty much when ever I would need new tires. I am one to carry two spare tires so purchasing 6 - 35's is more than double what I would have to pay to take your tires off your hands:clap:
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