I have a 1998 with swapped rubicon axles, I’m on 33’s right now and want to make the jump to 37’s I don’t want to stretch it ( yes I know it’s recommended just don’t have the garage or budget to pay someone) looking for people with 37’s on their tj and what lift they are running hoping to get people that actually do medium to hard trails, and how it handles. Any info is appreciated!
gasiorv
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gasiorv
I'm a new world samurai, and a redneck nonetheless
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This thread is a great read and playbook for anyone planning to run 37s on their TJ on somewhat of a budget.
Check it out:
https://wranglertjforum.com/threads/another-tj-on-37s-thread.39276/
Check it out:
https://wranglertjforum.com/threads/another-tj-on-37s-thread.39276/
Running 37s on factory Rubicon axles is a fools errand.
35s and no bigger is what you need.
You're not going to find anyone here that knows what they're talking about who will advise otherwise.
35s and no bigger is what you need.
You're not going to find anyone here that knows what they're talking about who will advise otherwise.
In all seriousness, here is some food for thought:
- How are you planning to reinforce your axles for the large amount of leverage on the drivetrain and housing? Your wheel bearings and ball joints will be heavily stressed, as well as the axle shafts.
- How are you planning to regain braking capability after adding so much leverage against the brakes?
- How are you planning to retain a reasonable amount of suspension travel? It will either be lots of lift or lots of cutting, or a combination.
- How are you planning to keep the tires clear of the sway bar, body, and suspension? Wheel spacers? If so, revisit the first bullet.
- How are you planning to regain drivability after adding so much leverage against the drivetrain? 5.38 regear? Is that deep enough for your specific transmission?
- How are you planning to carry a 37” spare?
- [edit to add] How are you planning on beefing up your steering components to handle the larger forces of 37s? A stock steering gear will struggle to turn 37s offroad. Currie currectlync? Hydro assist?
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Thank you for the awesome reply
I currently have chromolys front and rear as well as the Currie correctlync.
I’m planning on getting a upgraded steering box to accommodate the bigger tires as well as a big brake kit
As far as getting them to fit I’m planing on lifting it as well as cutting some so I can keep a semi low center of gravity. And to top it off a regear
How will you keep the ball joint yokes on the inner C's from stretching and the ball joints from falling out? That is something no one has figured out on the stock axles. And those who do not experience this as a problem aren't using the Jeep anywhere where anything matters.
Need the clearance for snowwheeling, and the trails where I live most of the ruts swallow my 33’s alive haha
Hang on Hoss, I need to go score some old school hash before clicking on that link...
Nate at Dirt Lifestyle on YouTube tried 37s in Washington snow.
And 38s, 40s.
He's now building a Landrover with Iceland sourced 42x14 snow tires.
I'm doing ok in Oregon snow on 35s. My next move is flatting my skid plate with a body lift, mml and a custom transmission mount and skid.
-Mac
P.S. Why not tracks? Other than the $25k price tag.
And 38s, 40s.
He's now building a Landrover with Iceland sourced 42x14 snow tires.
I'm doing ok in Oregon snow on 35s. My next move is flatting my skid plate with a body lift, mml and a custom transmission mount and skid.
-Mac
P.S. Why not tracks? Other than the $25k price tag.
You aren't going to get much if any support form people here suggesting or supporting the idea of running 37" tires on stock axles. Your Rubicon axles still use the same ball joint as the Dana 30 front axle and as already pointed out they aren't able to handle the added stress of large tires. Yes guys do it and some get aways with it for a short time prior to having to upgrade their front axle.
You'll be money a head to stay on 35" or smaller tires and save up for some stronger axles instead.
I have 35's and have no desire to go bigger. But I know of 3 guys in our club that have 37's on their TJ's. They like to do hard trails where they scrape over rocks all day. I'm happy to do moderate trails and have no desire to push mine to the limits. I drive my rig to trail rides across several states at times. These guys with the 37's only drive around in town. Any ride it has to be trailered. They were smart enough to get rid of the rubicon lockers and go with ARB or E-lockers. Two are 4.0 with the 3 speed auto and are geared 4.56. One had some carnage with the rear axle this year, the other snapped a front U-joint recently. The other is a 4 cylinder with 5 speed manual, 5.13 gearing, which does pretty well since it doesn't seem to have enough power to break things.
You know, sometimes when I’m out there on 33’s with my 2” lift I think.....if I can’t go over this stuff with these tires, I might not need to be going over this stuff.
This guy was on 35’s
I never had a snag following him. Same behind a JK on 37’s.
And I understand deep ruts, snow wheeling, etc - I realize 33’s aren’t the be all, but you can have an awful lot of fun on them.
Like I said sometime you just want more than 33's 
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