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35s and 3.21

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Old 06-04-2015 | 05:47 PM
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2doorjkinblack
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Default 35s and 3.21
What's up I have a 13 jk auto running 35s and 3.21 , I did the procal tuner to account for the tires but I am thinking of regearing what geat should I go too? It's my daily and I plan to go to 37s when I need new rubber
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Old 06-04-2015 | 06:07 PM
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Umm I would say atleast 4.56 - 4.88 gears. I have 4.10 and I am running 35s and no problems. Just a suggestion
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Old 06-04-2015 | 06:18 PM
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I would do 488 if you gonna do 37s. I have 35s and run 456.

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Old 06-04-2015 | 06:50 PM
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ade's Avatar
ade
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4.56 with the 3.6 is good and will keep the revs down at highway speeds. If you do a lot of crawling 4.88 would help.
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Old 06-05-2015 | 06:38 PM
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Would 5.13 be too much?
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Old 06-05-2015 | 07:47 PM
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Originally Posted by 2doorjkinblack
Would 5.13 be too much?
4.88 would be sweet spot with 37s
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Old 06-06-2015 | 06:10 AM
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Originally Posted by 2doorjkinblack
Would 5.13 be too much?
no need for 5:13 on a 2012 or newer jk unless your going up larger then 37's. I run 4:88 with 37's and it's great off-road. Rpm's are a little high on the highway but not to bad.
Last edited by 12JKjeep; 06-06-2015 at 07:03 AM.
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Old 06-06-2015 | 04:39 PM
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Ok cool thank you what's the logic behind it though 4.88 5.13 5.38 , 35 37 40 what would be the difference or the benefits of the ratios?
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Old 06-06-2015 | 06:09 PM
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Daily driver and 37"s? I hope you planning on upgrading to Dana 60s front and rear with the regear.
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Old 06-07-2015 | 09:01 AM
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I don't know how people can recommend a gear ratio without knowing if you wheel, what terrain you wheel, how you wheel, which t-case you have, what daily driver means to you or what the speed limits are in your area?
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