How’s your ride on 37s?

[Mr.Smith]

Mine has 37s. No need for a regear with the 410s and the turbo. Mine is a flat out beast. It runs in 8th all the time. My V6 JLUR ran great but rarely went into 8th. The turbo just runs circles around my 6. I have the mopar lift and I am really impressed with the ride. Tires at about 29 psi. Mileage is really dependent on speed.

I’m on my way to Kalispell MT and the first tank I got 17, second 19 and this last one 16. Running 70mph 1 and 2 and about 83-85 on the third tank. I don’t even know I have 37s on it. The power is effortless.

I will agree with this tranny and the 2.0 turbo I can not tell a power difference between the stock 33s and the 37s

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[Stickerhead]

37’ Nitto Ridge Grapplers on 2” RE spacer lift running 28psi. Rides great with stock springs. 2018 JLUR

 

[HealthRebel]

Void my warranty on what?

The tire!

If you have a blowout and Nitto finds out that you are running 7.5" width rims, when they clearly state in their literature that the "approved rim width for that tire is 8.5" - 11.0", I think they are going to look at you and the potential jury and say "that tire was mounted improperly and the fact that the blowout caused your Jeep to lose control, flip over, and thus kill your passenger, while we are very sorry for your loss, we are not responsible because your warranty was voided due to the fact that, as we stated, the tire was mounted improperly." Sorry... I work with a lot of attorneys in my profession and I always try to imagine the worse scenario.

Hey... I love the factory Rubicon wheels/rims. When I get my 2020 and change out the tires, I would like to keep the original wheels as well. I am just asking the question..."can we... safely?". According to the manufacturers literature out there, 7.5" width rims are NOT approved for 37" tires. It doesn't mean that you can't mount them and air them up and drive them, but if the 7.5" width is putting excessive side wall strain on the tire due to the narrow width of the rim and it causes the tire to fail prematurely, you have voided the warranty on the tire and have relieved Nitto from any responsibility. You know as well as I do that the tire manufacturer will put their money on that fact.

This could potentially even relieve your auto insurer's responsibility as well because even they may conclude that running an unsafe wheels/tire combination on your Jeep caused the accident, which puts 100% of the responsibility on you. Hey... it's a fu*ked up litigious world out there . I hate it. It sucks. But, that's where we are today.

My friend... I am just asking the question and seeking the truth and wanting my Jeep to be safe. I'm sure you feel the same.

 

[Mr.Smith]

The tire!

If you have a blowout and Nitto finds out that you are running 7.5" width rims, when they clearly state in their literature that the "approved rim width for that tire is 8.5" - 11.0", I think they are going to look at you and the potential jury and say "that tire was mounted improperly and the fact that the blowout caused your Jeep to lose control, flip over, and thus kill your passenger, while we are very sorry for your loss, we are not responsible because your warranty was voided due to the fact that, as we stated, the tire was mounted improperly." Sorry... I work with a lot of attorneys in my profession and I always try to imagine the worse scenario.

Hey... I love the factory Rubicon wheels/rims. When I get my 2020 and change out the tires, I would like to keep the original wheels as well. I am just asking the question..."can we... safely?". According to the manufacturers literature out there, 7.5" width rims are NOT approved for 37" tires. It doesn't mean that you can't mount them and air them up and drive them, but if the 7.5" width is putting excessive side wall strain on the tire due to the narrow width of the rim and it causes the tire to fail prematurely, you have voided the warranty on the tire and have relieved Nitto from any responsibility. You know as well as I do that the tire manufacturer will put their money on that fact.

This could potentially even relieve your auto insurer's responsibility as well because even they may conclude that running an unsafe wheels/tire combination on your Jeep caused the accident, which puts 100% of the responsibility on you. Hey... it's a fu*ked up litigious world out there . I hate it. It sucks. But, that's where we are today.

My friend... I am just asking the question and seeking the truth and wanting my Jeep to be safe. I'm sure you feel the same.

Not real concerned. If I felt as you do I would never leave the house lol

 

[HealthRebel]

Not real concerned. If I felt as you do I would never leave the house lol

Funny. True!

 

[Burt]

Thanks everyone, I’m convinced now that 37’s are the way to go. I bottom out every time I go off road, with a 3.5” lift and 37s that should be a rare occurrence.

 

[Mr.Smith]

I will add I havent offroaded and dont really plan to do any extreme crawling

 

[DrowningTurtle]

6 speed manual, 5.13’s, and 37s with method 105 beadlocks. I get 16 in town and 20 on the highway.

 

[Rockywoolf]

37 BFG KM3. 5.13s 3.6 manual. Could not be happier. DO NOT USE FLASH CAL to try and configure anything as it WILL confuse the main system and you WILL have to have the dealership reset it. Dealer ship said the only ones they use is AEV’s product to configure 5.13s. Have not done it yet. Speedo is 3 mph off with no setting change. Love the power. Seems to run overly hot, even before the 37s and gears. Regularly see 220+. Any comments on that? Sometimes I’ll see 230 which is driving me nuts. Dealer told me not to worry about it

 

[DzrtShrk]

Planning on 37’s, with a 3.5 lift with 513 gears and a 8.5 wheel. I know the specific lift and tire make a difference, but wondering how happy or sad everyone is with there setup with 37s? Ride? Mileage?

Mine’s the 2.0 and not a daily driver, only road miles are to the hi way to get to the trails.

Thanks guys

I am running 37x12.5x20R ProComp MTs I love the ride... but I am only averaging 11.4 mpg. I am in Palm Desert CA and have a set of (5) 37x13.5x20R IronMan MTs that only have 480 miles on them for $150.00 ea.

 

[OffroadTreks]

Mine has 37s. No need for a regear with the 410s and the turbo. Mine is a flat out beast. It runs in 8th all the time. My V6 JLUR ran great but rarely went into 8th. The turbo just runs circles around my 6. I have the mopar lift and I am really impressed with the ride. Tires at about 29 psi. Mileage is really dependent on speed.

I’m on my way to Kalispell MT and the first tank I got 17, second 19 and this last one 16. Running 70mph 1 and 2 and about 83-85 on the third tank. I don’t even know I have 37s on it. The power is effortless.

I will agree with this tranny and the 2.0 turbo I can not tell a power difference between the stock 33s and the 37s

THE TURBO IS AMAZEBALLS! Legit, unbelievable. I have put 37's on other vehicles and felt the power drain and sluggishness. I was expecting that with the 37's.

Put the 37's on, and all I really noticed was increased rolling resistance. If there is a power loss, it's very minimal.

I think you're going to be surprised with the 2.0T and the 37's. I most def was.

Fantastic combination. Truly.

I'm running Nitto Trail Grappler M/T's and I'm getting 18.1mpg now. Comparatively, I was averaging 20~21 on the stock wheels before lift.

 

[DrowningTurtle]

37 BFG KM3. 5.13s 3.6 manual. Could not be happier. DO NOT USE FLASH CAL to try and configure anything as it WILL confuse the main system and you WILL have to have the dealership reset it. Dealer ship said the only ones they use is AEV’s product to configure 5.13s. Have not done it yet. Speedo is 3 mph off with no setting change. Love the power. Seems to run overly hot, even before the 37s and gears. Regularly see 220+. Any comments on that? Sometimes I’ll see 230 which is driving me nuts. Dealer told me not to worry about it

Mine runs at 201 in 106 degree heat in El Paso.

I configured my speedo and everything using a tazer JL. Worked fine for me. Didn’t confuse anything. Just had to do a PCM reset and it worked great.

 

[Jhauck21]

Anybody else other than DzrrShrk wrapped on 20s? This is the setup I’d like to go with on my JLUS 2.0, but with 11mpg I’ll consider staying with 17s.

 

[Burt]

THE TURBO IS AMAZEBALLS! Legit, unbelievable. I have put 37's on other vehicles and felt the power drain and sluggishness. I was expecting that with the 37's.

Put the 37's on, and all I really noticed was increased rolling resistance. If there is a power loss, it's very minimal.

I think you're going to be surprised with the 2.0T and the 37's. I most def was.

Fantastic combination. Truly.

I'm running Nitto Trail Grappler M/T's and I'm getting 18.1mpg now. Comparatively, I was averaging 20~21 on the stock wheels before lift.

Great,, glad to hear that, hopefully adding the 513 gears will help the mpg s a bit

 

[4x4Funlover]

Thanks everyone, I’m convinced now that 37’s are the way to go. I bottom out every time I go off road, with a 3.5” lift and 37s that should be a rare occurrence.

I would still add an engine skid minimum even with that set up, Transmission lines are in a very venerable spot. Had a rock tilt on me and smack the engine skid this past weekend was happy I had protection.

Rides Great. 37's @31 PSI on stock wheels 4.10 gears with the V6 auto I DD mine and average 19.5 according to the computer commute is about 50/50

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