37 regrets

[wanderer]

Is anyone having any regrets over going to 37s? Please tell me before I pull the trigger and shoot myself in the foot.

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[DeezJT]

Nope. Not at all. I did consider 35’s but eventually I’ll be adding weight so I’ll be regearing anyways. So far, with 4.10 gears/37’s, and my current mods, a regear is not a priority based on my needs.

 

[Jeeperjamie]

I'm having regrets by not going 37's if that helps. I went 315 70 17 BFGs and it's handling them so we'll I now regret not going 37 12.5 17 BFGs. I'll 100% be going 37 when these wear out which will probably be about 18 more months from now. I got a Max Tow if that helps, if I had a regular sport with 3.73 gears I wouldn't do 37's based on my buddies experience on his overland. I wouldn't like 14 MPGs.

 

[wanderer]

Thanks. Going with 3s and 488

 

[Diaster]

Thanks. Going with 3s and 488

Remember when going above 35” you are maxing out the turning gear box system. You should go hydraulic assist at the very least and it would be wise to also upgrade the axles them selves, not just the ratio. Bigger tires = more mass and stored energy when moving. Hit an obstacle at more than a crawl and you can damage components (wear them out faster at the very least). L8ke lifting with pucks, yes it looks cool but is It the right way, you know compression and deformation issues.
my own example. Stock Chevy 3/4 ton long bed 1977 version. Lput a lift and 44s on it. Drove around and little did I know,
i was stressing the frame. Thought I was being cool one night and decided to climb a little bitty curve in a utur, ripped the steering box and attached piece of frame right off. Had to Rewe of it right there!

 

[Jeeperjamie]

Thanks. Going with 3s and 488

You will be fine with 37's if you go with a BFG or something like that. 66lbs a piece isn't going to wear components out any faster than a 63lb 35. I never had issues on my JKU when compared to others with 35's. You expect to do ball joints at about 120,000 miles. I ran 37 BFGs and 35 BFGs on my JKU with a upgraded rough country track bar and 4-1/4 inches of lift and I ran the factory ball joints out at 120,000 miles. I replaced them with factory ball joints. 7yrs worth of driving and going off road. 44's is a whole other animal. You can get away with up to 38's and be fine based on people I knows experience on a Jk. I would imagine the JT has a little beefier components or I know the track bar and tie rod looks beefier on my JT compared to my stock JKs track bar I have in the garage.

 

[briandmiles]

No regrets here. The Ecodiesel with 3.73s keeps me in 8th gear so I’m pretty happy with it. Stuffing the spare underneath was an adventure but it finally fit at 5psi.

Brian

 

[Solidaxle]

Nope , Was also on the fence but in my opinion it’s the perfect size 35 too small 39 too big. Take negative people with a grain of salt as they have motive’s. Like their wife won’t let them, won’t fit in garage or car wash etc.... there’s reasons behind their negative 37 inch comments. Overall most 37 inch tire comments come from people who do not have them and never owned them.
No regrets at all ! love my 37’s

 

[wanderer]

I know the old chr it’s ha notoriously weak welds at the steering box to the. Frame. So weak they even had a aftermarket replacement kit. For it for awhile

 

[wanderer]

@Solidaxle
Are you running a lift? Did you regear?

I followed a guy in a black sport lifted.From the dealer running 37 mts and 373 gears. He lives up in Lebec whic is the top of the mountain on i 5
( the grapevine)in California. Elev is about 4400. He said he had no problems didn’t regear and dropped into 4 th on the climb. It is pretty steep.

 

[Solidaxle]

2” AEV , 37” BFG Mud 4.10 gear. 17x9 5” BS Fuel wheels. I also live in California the grapevine doesn’t scare me. This transmission is awesome might drop some gears keep the RPM perfect you’ll pass a lot of cars and trucks. I travel through the Camarillo grade in Ventura set the cruise control at 70 the Jeep never slows me down it’s all the traffic. sports cars , v8 trucks whatever they can’t get up the hill. LOL

 

[MoparToYou]

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.

 

[Silvertruck]

These trucks need more tire. Enjoy your 37’s.

 

[Renegade]

Remember when going above 35” you are maxing out the turning gear box system. You should go hydraulic assist at the very least and it would be wise to also upgrade the axles them selves, not just the ratio. Bigger tires = more mass and stored energy when moving. Hit an obstacle at more than a crawl and you can damage components (wear them out faster at the very least). L8ke lifting with pucks, yes it looks cool but is It the right way, you know compression and deformation issues.
my own example. Stock Chevy 3/4 ton long bed 1977 version. Lput a lift and 44s on it. Drove around and little did I know,
i was stressing the frame. Thought I was being cool one night and decided to climb a little bitty curve in a utur, ripped the steering box and attached piece of frame right off. Had to Rewe of it right there!

I’ll disagree. I find that the JT does quite well with 37” tires. Is all that extra stuff nice to have? Sure! Is it entirely necessary? Nope. If doing serious rock crawling with a heavy foot, yes, it becomes necessary.

 

[Renegade]

To answer the original question, yes, I regret 37s. I wish I had done 39” KM3s...

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