37 regrets

[KurtP]

No regrets here. I didn't go to 37s for on road use, but my Mojave drives better with a 2 1/2" lift and 37s than it did stock with 33s.

Just yesterday my wife and I were driving on the freeway at the speed limit (80 mph), and I told her to watch my one hand that was lightly resting on the top of the steering wheel. After a minute or so she asked "what am I supposed to be looking at"? I said, "notice that it isn't moving, ... at all". There was none of the constant steering correction that some people complain about with a Jeep. It drives rock solid and steady, and tracks better with the 37" Toyo's than it did with the 33" Falken's. I added Teraflex Sport lower front control arms with my lift, and I think they increase caster relative to stock without a lift. In any case, this Jeep is the best driving lifted Jeep I've owned, going all the way back to my first Jeep in 1974.

I bought the 37s for off road use. And the difference there is like night and day compared to 33s. With 37s the Jeep just crawls effortlessly over tougher obstacles. And dragging the belly or rear bumper are now almost a thing of the past.

Very happy I went with 37s. They are the perfect size for this truck. You can run them with a stock drive train, and not need to re-gear if you have an auto trans and 4.10s. No need to strengthen the axles either, just use your head and a little finesse, instead of your foot and a lot of throttle.

39s would be even better off road, but that starts to open another whole can of worms that I didn't want to open.

what lift?

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[Jems007]

I have 37's. Regrets I didn't go with 38's.

 

[HH60Driver]

I regret getting Toyo 37s. If had a lot of pulling issues that I thought was from my lift. Turns out if you just search “Toyo MT pulling right” there’s a million post from every truck forum out there. Horrible tire.

 

[RodRecket]

I've had to vehicles (JKUR and a Powerwagon) with 37s. I loved the look and the ground clearance that they gave. Both of those vehicles were used like my JT is now, DD with camping duty and off roading (mild to moderate crawling) 10% of the time. I promised myself I would not go 37s this time. 37s seem to be right on the edge of making DD the rig unenjoyable without significantly upgrading many other components. Maybe the JT is different but I will not be finding out first hand. 35s for me.

 

[Renegade]

I've had to vehicles (JKUR and a Powerwagon) with 37s. I loved the look and the ground clearance that they gave. Both of those vehicles were used like my JT is now, DD with camping duty and off roading (mild to moderate crawling) 10% of the time. I promised myself I would not go 37s this time. 37s seem to be right on the edge of making DD the rig unenjoyable without significantly upgrading many other components. Maybe the JT is different but I will not be finding out first hand. 35s for me.

The 8-speed automatic is a game changer. It’s 100% better than the 5-speed auto in the JK. My JT with 4.10s accelerates much better than my last JK with 4.88 gears, both on 37s.

 

[Solidaxle]

If they ever make a V8 version , that will have 39” KM3.

 

[RodRecket]

The 8-speed automatic is a game changer. It’s 100% better than the 5-speed auto in the JK. My JT with 4.10s accelerates much better than my last JK with 4.88 gears, both on 37s.

I'm sure the tanny is a huge upgrade on this platform from the JK. The axles are more stout, brakes are better...etc

That said, I have a 6MT that I plan on regearing to 4.56 w/ 35s. Again I'd be looking at 4.88s or 5.13s w/37s. More rolling resistance = faster wear rate on components (brakes, ball joints, bushings)

I think 37s are the new 35s and they look damn good on these trucks but I know I after 2 vehicles on 37s DD that big of a tire is not for me. Who knows, I may change my mind down the line.

 

[MoparToYou]

what lift?

Teraflex components.

 

[KurtP]

Im aphrenrsive to go 37. Seems like people break stuff a lot more, and the motor can barely turn 33’s On the interstate.

 

[andrew8404]

Im aphrenrsive to go 37. Seems like people break stuff a lot more, and the motor can barely turn 33’s On the interstate.

compared to what? Gladiator is just fine on 33s. Mine is fine with 35s and 3.73. is it as fast my turbo Ranger? Of course not but I didnt buy It to race. It’s way better than a Taco.

 

[Factoid]

99% of the people who have regrets about 37’s are those who went with 35’s and wish they went larger or those who went with 37’s and wish they went larger.

You will not regret it, but build your Jeep for its intended use. If you are big off roader and rock crawler, you will have more work to do. If not or you occasionally drive off the beaten path, you will be fine.

 

[Jeeperjamie]

Im aphrenrsive to go 37. Seems like people break stuff a lot more, and the motor can barely turn 33’s On the interstate.

What gearing do you have, my Max Tow with 4.10 gears turns 35's like a boss. If I would of known how well it would handle the 35's I would be on 37's, but that's coming. As far as breaking stuff, there's not a huge difference in weight when comparing most 35's and 37's, one of the reasons I like BFG, they are light. Your ball joints aren't going to last much past 120,000 to 140,000 miles even on 33's, maybe longer on stock tires. I used my JKU as a platform for my decision and I wish I would researched it more. 2010 JKU never saw 15 mpgs on 35's and around 13.5 on 37's, my JT gets 18.5 on 35's and I don't think it will suffer to much more on 37's. I am almost positive I can get over 17 mpgs average on 37's and I'm completely good with that.

Most of the time when people break stuff on 37's it's because they try to go cheap and just stuff 37's on a stock ride or something. If your lifted at least 1.5 inches and got 4.10 gears or better I would not hesitate to put 37's under it. If you got 3.73 gears I would say no. Not saying you can't do it on 3.73 gears but be prepared for a MPG hit. As far as tearing stuff up, I wouldn't worry about that unless your going larger than 37

 

[KurtP]

Gladiator on 33” mt’s and stock 4.10’s cant can barely hold 8th gear on the interstate. It constantly needs 6 and 7.

 

[Harold0819]

Have never heard regrets for going with 37s, but have heard them for going with 35s

 

[Harold0819]

What gearing do you have, my Max Tow with 4.10 gears turns 35's like a boss. If I would of known how well it would handle the 35's I would be on 37's, but that's coming. As far as breaking stuff, there's not a huge difference in weight when comparing most 35's and 37's, one of the reasons I like BFG, they are light. Your ball joints aren't going to last much past 120,000 to 140,000 miles even on 33's, maybe longer on stock tires. I used my JKU as a platform for my decision and I wish I would researched it more. 2010 JKU never saw 15 mpgs on 35's and around 13.5 on 37's, my JT gets 18.5 on 35's and I don't think it will suffer to much more on 37's. I am almost positive I can get over 17 mpgs average on 37's and I'm completely good with that.

Most of the time when people break stuff on 37's it's because they try to go cheap and just stuff 37's on a stock ride or something. If your lifted at least 1.5 inches and got 4.10 gears or better I would not hesitate to put 37's under it. If you got 3.73 gears I would say no. Not saying you can't do it on 3.73 gears but be prepared for a MPG hit. As far as tearing stuff up, I wouldn't worry about that unless your going larger than 37

Dam...what balljoints do you have that last 120K-140K. The OEM ones generally never make it past 20-40K. Now the aftermarket ones, Synergy, Alloy USA, Rare Parts, etc, could definitely see that

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