4.56 vs. 4.88’s for 37’s - 40’s

[Tpsillos]

Got it, makes sense. I went with a Teraflex RT3 lift for my JL, and it came with the bump stops, which I will say has helped but I do get a very minimal amount of bumper rub still in some situations with the Trail Grappler 38’s

my 3.5rk came with the bump stops needed I only installed what was necessary for 38s at the time though. Gutted rubicon fenders and artec non diesel inner fenders helped a lot too

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[JL_Wildlife]

my 3.5rk came with the bump stops needed I only installed what was necessary for 38s at the time though. Gutted rubicon fenders and artec non diesel inner fenders helped a lot too

Nice! I’ll check those out. One of the next mods I need to do is fender liners

 

[Wrangler man]

what I meant by performance is acceleration and down shifting going up hills vs with 38's and 4.10s.
offroad performance is much better with bigger tires. it still creeps in 4 lo even though i would like to find a rubi transfer case to enhance that aspect some. I do need to add a little more bump stop to the front because at full lock it rubs the bumper when flexed out.

From your personal experience would there be any reason to go lower than 4.10s while running 38s? Hence I plan on moving to 38 still have 3.73s. With my sport transfer case in 4 low and the torque of the 3.0 I still feel it outperforms the torque of a gas Rubi. I've heard diesels will go all the way to $6-$7 even $8 a gallon in my crappy State of California this summer. This not being my daily driver and more of an overlanding vehicle I'll keep my lower RPMs and MPG while on the highway with my 373s.

 

[Tpsillos]

From your personal experience would there be any reason to go lower than 4.10s while running 38s? Hence I plan on moving to 38 still have 3.73s. With my sport transfer case in 4 low and the torque of the 3.0 I still feel it outperforms the torque of a gas Rubi. I've heard diesels will go all the way to $6-$7 even $8 a gallon in my crappy State of California this summer. This not being my daily driver and more of an overlanding vehicle I'll keep my lower RPMs and MPG while on the highway with my 373s.

honestly the 3.73s and 38s was very drivable, but the 4.10 put it right back to where it was when new (3.73 and 32.8” tires). The biggest difference was going up hills without downshifting, but still much better than a gasser with 4.10s. I don’t see any reason in even 4.56 gears unless going to 40s

 

[Tpsillos]

Nice! I’ll check those out. One of the next mods I need to do is fender liners

The diesel liners don’t have the clearance the gas liners have since the washer reservoir is in the way. But they fit nice with minor trimming to the reservoir.

 

[JL_Wildlife]

The diesel liners don’t have the clearance the gas liners have since the washer reservoir is in the way. But they fit nice with minor trimming to the reservoir.

Nice! That’s good to know, I was not aware of that.

 

[SOTA]

honestly the 3.73s and 38s was very drivable, but the 4.10 put it right back to where it was when new (3.73 and 32.8” tires). The biggest difference was going up hills without downshifting, but still much better than a gasser with 4.10s. I don’t see any reason in even 4.56 gears unless going to 40s

FWIW Jeep is going to put a 4.56 on the 2024’s with the 35 tire package.

 

[Tpsillos]

FWIW Jeep is going to put a 4.56 on the 2024’s with the 35 wheel package.

They gotta do something to try and make up for the diesel engine I guess…

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