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Old 08-03-2014, 09:53 PM   #1
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Tire questions

I just put an AEV 3.5 inch lift on my rubicon 2014. My 32 inch tires look small now. I want to put 35's should I regear?

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Old 08-03-2014, 10:10 PM   #2
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What ratio do you have? 3.73 or 4.10?

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Old 08-03-2014, 11:03 PM   #3
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If your running an auto, anything under 4.10's I'd regear. Can't speak for the manual.
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Old 08-03-2014, 11:29 PM   #4
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On you know your driving habits so only can make the best choice by looking at gear chart. Compare the cruising RPM now vs the cruising RPM you will get with 35s if you don't regear. If you don't like then pick the gears the provide the RPM for your needs.

For performance most agree that 4.56 is the best ratio. You might be able to live with 4.10s and 3.73 will only work acceptably with a manual and you will loose the ability to use the top gear.
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Old 08-04-2014, 12:09 AM   #5
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He said "Rubicon" so it should be 4.10 gears.
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Old 08-04-2014, 01:07 AM   #6
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He said "Rubicon" so it should be 4.10 gears.
Not true. 13' forward rubicon auto comes standard with 3.73. Mine is exactly that.
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Old 08-05-2014, 11:27 PM   #7
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I've got the stock 4:10's with 35" tires, very happy with them on the road, the pentastar has plenty of torque to turn them. Off road I'm usually in low range with the 4:1 transfer case I have never had any problems climbing either.
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2013 JKU Rubicon - Commando

Teraflex 2.5" spring lift, Teraflex monster front and rear trackbars, G2 wheel adapters, Goodyear Wrangler MTR Kevlar 35 x 12.5 x 17, Superchips Flashcal, Warn Zeon 10, Smittybilt XRC bumpers front and rear with tire carrier, Metal Cloak Overland Fenders, Uniden Bearcat 980, Homemade side rails. 50" and 20" light bars and brackets.
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Old 08-05-2014, 11:47 PM   #8
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I'll +1 sixpack... 4:10's with 6speed manual and it seems like a good match up with 35" tires, I don't have any need to regear... It's by no means slow on the roads, and requires just a little more foot pedal on the trails.
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Old 08-05-2014, 11:50 PM   #9
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My 12 rubi auto with 35s and 4.10 is fine on the interstate. No plans to regear.
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Old 08-07-2014, 01:32 AM   #10
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Quote:
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Not true. 13' forward rubicon auto comes standard with 3.73. Mine is exactly that.
Yep, my 2012 JK Rubicon Automatic came with 3.73 gears. That issue has been mended...
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Old 08-07-2014, 01:36 AM   #11
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I've got the stock 4:10's with 35" tires, very happy with them on the road, the pentastar has plenty of torque to turn them. Off road I'm usually in low range with the 4:1 transfer case I have never had any problems climbing either.
Yeah, I'd likely still be stock if my JKR had come with 4.10 gears. The 3.73s were fine off road in low range. But the highway was a pain... BTW, the 4.56 gears have made it easier to stay in 4 HI while off roading in flat sandy terrain. The 4.56 gears and 35" tires are a really nice setup in all honesty. I think with my 2 door I'd be happy with 37" tires also.
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Old 08-17-2014, 03:07 PM   #12
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How can I be certain of what the gear ratio is on my rubicon?
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Old 08-18-2014, 07:23 AM   #13
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Quote:
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How can I be certain of what the gear ratio is on my rubicon?
Request a build sheet from Chyrsler.

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