37" on stock rubicon gear ratio

BrandonDetrick said:
Is the stock rubicon gear ratio okay to run 37s?
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On a 2007-11 running a wimpy 3.8L, no. On a 2012-up running a 3.6L Pentastar, you can definitely do it so long as you make sure to recalibrate your speedometer. We are and have found it to be acceptable.
 
BrandonDetrick said:
Well I have a 2010. Will it be horrible to run it with em for a little while
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I have a 2008 manual transmission and started with stock gears and 37" Toyos. While it is do-able, the 6th gear is almost never used. Think 4 speed with an overdrive 5th gear.

I went to 513 gears and there was immediate improvement and it was worth the money when it comes to better drive-abilty. I can't attest to automatic transmissions, but was told by those that di have them that re-gearing was a must on the Jeeps prior to the Pentastar engine.
 
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