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HappyGladiator

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40s look killer. But now I have 315s and thinking about 37s. Looking at all the downs of going any bigger. Reprogram, gears, ram assist steering, performance and mpg, wear and stress on everything . From what I hear 315's is the limit without falling down the rabbit hole.
 

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40’s are so much bigger than 37’s !!
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Man your truck just looks "TOUGH". It's crazy that even huge tires look at home on some Gladiators! I just went up to 37's and my truck looks badass, but there's something about the 40's!!

I've been noticing other lifted trucks lately (like Ford and Chevy/GMCs) and they look ridiculous to me because they have so much lift with small tires it looks just stupid. They can only fit like 35's at best "in" the wheel well, but most lift the truck so high the bigger tire isnt in the wheel well and the truck sits well above the frame looking stupid.
 

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Dam Kyle now seeing your truck on 40s I am definitely going to have to step up to 37s, my 35s won't cut it anymore! Unfortunately I have to regear first, my truck only has 3.73
 

HappyGladiator

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I hear the spare of 37s will go in spare location. Don't want to loose the bed to a spare 40. With the Rubicon 4.10 diff do you really have to re gear for 37s (36.5) .
 

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Dam Kyle now seeing your truck on 40s I am definitely going to have to step up to 37s, my 35s won't cut it anymore! Unfortunately I have to regear first, my truck only has 3.73
Yea these trucks need at least 37’s do it
 
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Kyle10

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I hear the spare of 37s will go in spare location. Don't want to loose the bed to a spare 40. With the Rubicon 4.10 diff do you really have to re gear for 37s (36.5) .
I didn’t regear when I had 37’s but did now with the 40’s
 

HooliganActual

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I hear the spare of 37s will go in spare location. Don't want to loose the bed to a spare 40. With the Rubicon 4.10 diff do you really have to re gear for 37s (36.5) .
I’ve been running 37’s on 4.10’s for about 2 years now. I see low 13’s around town and mid 14’s on the highway and my rig is heavy as it’s built out for overlanding. I feel like I have good jump off the line in town but I also don’t see 8th gear unless I’m on a flat or downhill.

I vacillate on regearing because I know it’s the “right thing” to do but when I regeared my Wrangler from 3.73 to 4.56 I only noticed about a 1 mpg improvement; so, I struggle with finding the time and value to do it. Especially when I consider that my gas mileage on the Gladiator isn’t a whole lot different than my Wrangler.
 
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