My thick skull 37 vs 35

[JT1]

I believe with the latest TBS, they unlocked that so you could run higher gears because I've seen quite a few folks do 5.13s with 37s, 38s ... and on a bunch of forums it seemed at the very beginning that when they did 5.13s they hit that limit which was 4.50 so not even 4.56 but then reading further they all state that software upgrade / update from dealer fixed and allowed the change to 5.13s without your dashboard looking like a Christmas tree and loosing ABS, Regen, ect.

Good deal! Thanks for that.

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[azjl#3]

Az crawling since 60's.

Ko2+rocks=good.

What are you climbing to need 37 vs 35, heck vs 33?

I remember offroading with soon to be father in laws jimmy on 31s. Super tall tire for the day. Middle if nowhere 4 peaks, we made it, satisfied, then a busted stock vw bug goes by us.

My point is, 33 tires were the bomb, until someone had to clear something 1 inch taller, then 35s, now 37 plus? Not buying it. 37s need the axle geared, 35s, can hang on 4.1

But these are jeeps, you do you,

 

[Cat|3bones]

Good deal! Thanks for that.

Haha! no problem, happy to share details. Been looking at 35s vs 37s for quite a bit, and trying to figure out how big of a dog 3.73 are... lol, Jeep just couldn't stick all axles with 4.10s at least or 4.56 for all.

 

[JT1]

Haha! no problem, happy to share details. Been looking at 35s vs 37s for quite a bit, and trying to figure out how big of a dog 3.73 are... lol, Jeep just couldn't stick all axles with 4.10s at least or 4.56 for all.

Amen to that. All the 6spd jeeps should have had 4.10s minimum.

 

[Cat|3bones]

Az crawling since 60's.

Ko2+rocks=good.

What are you climbing to need 37 vs 35, heck vs 33?

I remember offroading with soon to be father in laws jimmy on 31s. Super tall tire for the day. Middle if nowhere 4 peaks, we made it, satisfied, then a busted stock vw bug goes by us.

My point is, 33 tires were the bomb, until someone had to clear something 1 inch taller, then 35s, now 37 plus? Not buying it. 37s need the axle geared, 35s, can hang on 4.1

I think its primarily also not for just clearance but look factor, who wants our JLs with 31s, look like school girl with her skirt up. Capable maybe, but even the fender of the JL is so big that 31s just look weird and I personally, would like NOT to look weird while I'm doing a trail :P just saying. I think that is what a lot of us do, even if you wheel hard, you'd still go for that look cool factor.

 

[Cat|3bones]

Amen to that. All the 6spd jeeps should have had 4.10s minimum.

I think its all about MPGs and EPA, blah blah government crap and market, including competition, Jeep put gears and tires together to try and squeeze as much MPGs as possible for those that are all about saving the planet, saving on fuel, etc.. yada yada... while making the Jeep capable of something offroad, including the moms on grass lol so they dont get stuck :P

If I was the new CEO, I'd do half price upgrades (or free with a big IF) and settle on one axle, single gearing based on feedback and usage for anything from that day on coming out of factory. I'm sure they see plenty of Jeeps getting regeared vs not regeared, some aren't regeared because it not affordable, some just dont care.

 

[stretch-bsn]

Az crawling since 60's.

Ko2+rocks=good.

What are you climbing to need 37 vs 35, heck vs 33?

I remember offroading with soon to be father in laws jimmy on 31s. Super tall tire for the day. Middle if nowhere 4 peaks, we made it, satisfied, then a busted stock vw bug goes by us.

My point is, 33 tires were the bomb, until someone had to clear something 1 inch taller, then 35s, now 37 plus? Not buying it. 37s need the axle geared, 35s, can hang on 4.1

But these are jeeps, you do you,

What am I climbing?!?! Whatever I want! Hahaha just kidding…first thought that came to mind was when talent doesn’t match terrain haha (little self deprecation). I’ve talked with several guys (older wheelers) that have done some insane trails on 29’s, 31’s, and 32’s.

So the reality is that I don’t NEED 37’s…I want them. I do think the added clearance will be awesome. I’m still %100 learning a newb and still pick great lines sometimes and HORRIBLE lines others. At the end of the day it’s just something I think will be cool and give me a little more clearance for my lack of experience. Maybe that sounds ridiculous but it’s just the truth and I’m okay with that. Regardless of tire size I’m still excited to learn how to wheel better and take tips from people who were wheeling while I was whipping a big wheel haha

 

[SadRobot]

Just as @jadmt said.

I %100 bought my Jeep because it looked cool. I had zero intention of off roading. I actually didn’t even know the difference between a sport, sport s, Sahara, and rubicon. I just saw a Jeep with 35’s and a little spacer lift and thought…that will look bad ass and fun driving around.

Then a buddy convinced me to go on this little nothing trail and with the doors off, top off, 4 low … I couldn’t find enough crap on that trail to climb on lol. It’s been a year since I’ve owned this jeep and I’m hooked. Swapped axles myself, wired for lockers, lifted it…..had I to do it again I would have went rubicon all the way…but I didn’t know.

This happened to me also. Bought my Sport because I always wanted a Wrangler, no intention of taking it off pavement. Then I went 33s, then 35s, then 37s, air lockers, re-gear, lift, winch, on board air compressor and now about to install a 4:1. It's never ending and if I could get a D44 up front I'd be on 40 and 5.13s maybe.

 

[Poseidon20]

This happened to me also. Bought my Sport because I always wanted a Wrangler, no intention of taking it off pavement. Then I went 33s, then 35s, then 37s, air lockers, re-gear, lift, winch, on board air compressor and now about to install a 4:1. It's never ending and if I could get a D44 up front I'd be on 40 and 5.13s maybe.

Yup, put me in that boat too. Got a Sport that already came lifted with 35's because it looked awesome and I wanted to get back into a Jeep (had a TJ SE in college). I added LCAs, Trackbar, then Apex Autolynks, then Skid plates, then rock rails, then onboard air. Next will be regear, lockers and 37s when new tires are needed.

At the dealership there was a stock gray Rubicon there with a little more miles for a few thousand dollars more....Didn't even look at it because my heart was set on Blue. I try not to think about that (clearly) so regret doesn't find a way in.

I do have a question for you, I've been advised not to add lockers of any type (I'm thinking elockers) to the D30, because it actually puts more strain on the axles when locked and crawling. So I'm thinking of putting in LSD in the front and elockers in the rear (I have D44 because manual). Convince me to put lockers in both instead. Thanks.

 

[Mifsuud]

I get it, and what I mean by dropping mpgs is from what I hear 37 and 3.73 get people 18s around town and thruway. I was just stating that I hope I wont be the only Wrangler that for some reason ends up getting 10mpgs. I'm fine with going from 21-23 I get now, down to 18s. Drove an LJ with 5.13s, Supercharged for a year and got 12mpgs which was fine for me. I also don't think I will be robbing myself of that much torque (200+) before regearing. Seems also like a lot of 3.6 3.73 gearing guys done in back in 2022-2023 which is crazy for 3.6, that is something I wouldn't do. But, that is why I'm on the fence here thinking and asking around. I wil regear because even if I stayed on 35s, or 33s, or 31s, if I add any gear like bumper, winch, rack, etc.. I'll still will need to regear to push all that weight around.

I believe the electric motors are rated at 110 ft-lbs of torque each. And we have two in 4xe's. Never charging means they won't be available all that often to you. Yeah they trickle charge a bit in hybrid mode and if you have max regen on it helps in town.

My '21 JLUR 4xe has 4.10s and I really with the 4xe could get the XR package with 4.56 gears. I'd be thrilled to have those. I've had 315/70r17s for nearly two years without any issue. Programmed larger tires and transmission finds 8th easily. Plenty of power to turn the 35s. I decided to avoid 37s due to the additional strain. They would easily fit but I'm good.

 

[JT1]

Yup, put me in that boat too. Got a Sport that already came lifted with 35's because it looked awesome and I wanted to get back into a Jeep (had a TJ SE in college). I added LCAs, Trackbar, then Apex Autolynks, then Skid plates, then rock rails, then onboard air. Next will be regear, lockers and 37s when new tires are needed.

At the dealership there was a stock gray Rubicon there with a little more miles for a few thousand dollars more....Didn't even look at it because my heart was set on Blue. I try not to think about that (clearly) so regret doesn't find a way in.

I do have a question for you, I've been advised not to add lockers of any type (I'm thinking elockers) to the D30, because it actually puts more strain on the axles when locked and crawling. So I'm thinking of putting in LSD in the front and elockers in the rear (I have D44 because manual). Convince me to put lockers in both instead. Thanks.

Smarter money is buying an axle from a gladiator.. D44 same width as your sport axle and can regear as needed. If yours has a fad, make sure the new one does too. Also bigger brakes.

 

[SadRobot]

Yup, put me in that boat too. Got a Sport that already came lifted with 35's because it looked awesome and I wanted to get back into a Jeep (had a TJ SE in college). I added LCAs, Trackbar, then Apex Autolynks, then Skid plates, then rock rails, then onboard air. Next will be regear, lockers and 37s when new tires are needed.

At the dealership there was a stock gray Rubicon there with a little more miles for a few thousand dollars more....Didn't even look at it because my heart was set on Blue. I try not to think about that (clearly) so regret doesn't find a way in.

I do have a question for you, I've been advised not to add lockers of any type (I'm thinking elockers) to the D30, because it actually puts more strain on the axles when locked and crawling. So I'm thinking of putting in LSD in the front and elockers in the rear (I have D44 because manual). Convince me to put lockers in both instead. Thanks.

I had my air lockers installed when I did the re-gear which at this point was maybe 4-5 years ago. D30 in the front, D44 in the rear(because manual as well). I've used my front locker a handful of times. Get more use out the rear for sure. No issues so far. I had the option of elocker or air locker and went air just based on stories of elockers failing.

Eventually I want to replace the front axle with a narrow D44 from a JT, remove the e-locker from it and install an air locker again to keep my same setup.

Just a note about color. I wanted bikini blue and could not find one with the specs I wanted. I ended up buying my Jeep in billet silver and turning it blue. It's not quite bikini but it's pretty close.

 

[TEAMSLO]

I had a JTM 4.10 on 37s, always had to go into 4lo for obstacles and for hills. Went to 5.13 and life changed in the dirt.

On my JLURD 3.73 on 40s/38s, I stayed with the 3.73 but was always going back n forth with 4lo while in the dirt.

On the 392 3.73 on 38s, struggled to stay in 8th on the highway, if the wind blows at all, you drop to 6th/7th gear. Geared to 4.88, can hold 8th even up long passes if you stay light on the throttle.

 

[stretch-bsn]

Yup, put me in that boat too. Got a Sport that already came lifted with 35's because it looked awesome and I wanted to get back into a Jeep (had a TJ SE in college). I added LCAs, Trackbar, then Apex Autolynks, then Skid plates, then rock rails, then onboard air. Next will be regear, lockers and 37s when new tires are needed.

At the dealership there was a stock gray Rubicon there with a little more miles for a few thousand dollars more....Didn't even look at it because my heart was set on Blue. I try not to think about that (clearly) so regret doesn't find a way in.

I do have a question for you, I've been advised not to add lockers of any type (I'm thinking elockers) to the D30, because it actually puts more strain on the axles when locked and crawling. So I'm thinking of putting in LSD in the front and elockers in the rear (I have D44 because manual). Convince me to put lockers in both instead. Thanks.

Man I can’t help there lol. I had a Dana 30/35 and swapped mine out for some marketplace takeoffs. Got Dana 44’s with lockers front and rear. I would have REALLY struggled had I already had a Dana 44 in the rear but since my axle set up was so small to start whenever I would run the numbers to beef up my Dana 30/35 or just buy Dana 44 take offs it was a wash (same price) so I made the jump.

 

[Poseidon20]

Smarter money is buying an axle from a gladiator.. D44 same width as your sport axle and can regear as needed. If yours has a fad, make sure the new one does too. Also bigger brakes.

I've thought about front axle swap, and could still be an option, but I'm selling the Jeep in ~3 years so I may not even do the lockers and regear. It'll really depend on how much I'm wheeling this next year. But I've calculated new front axle+rear lockers+regearing both axles (unless I get really lucky and find a 4.56 or 4.88 front axle) and its cheaper to just regear and add lockers to both.

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