How are the 3.21 gears with 33" tires? (JK) - Jeep Wrangler Forum
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Old 05-07-2013, 01:36 AM   #1
Join Date: Sep 2010
Posts: 293
How are the 3.21 gears with 33" tires? (JK)

I found almost the jeep I want. It's a 2013. It's the right color. It has half doors. It's got a locking differential. The only thing it doesn't have are 3.73 gears. How are the 3.21 gears with larger tires? I know it's going to cost an arm and a leg to regear the thing, but I'm guessing less than the cost of Mopar doors. And it's the color I love. Thoughts?


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Old 05-07-2013, 03:24 AM   #2
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Join Date: Aug 2012
Location: Buffalo NY
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Regear is $1500 at least but at least then you could actually get higher gear ratio then offered from factory (4.56,4.88)

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Old 05-07-2013, 04:27 AM   #3
Omar Brannstrom's Avatar
Join Date: Jun 2011
Location: Sweden
Posts: 511

My take. Also wanted 33" but did not want to lift the wrangler and here in Sweden it is against the law if the wheel go past the fenders and bushwackers are expensive.

I have a 2 door Sahara 2012 auto 3.21.

So I went with Cooper st maxx in size 265/70/17 and with Black Rock Rim with 4.5 in backspacing. These are about 31.8" high, actually little lower than my 18" stock wheels but my new combo looks better due to the more aggresive pattern and that the stand out more, very little past the fenders.

With this combo and 3.21 the wrangler is like a racing car and no need for lift or new fenders.

And this copper tire are very heavy, probably close to some 33" in weight.

I need some clearance for the wheels because I heavy load it for camping trips.

Anyway some picture

Cooper to the left

2013 10th Anniversary Rubicon, delivered in one week
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Old 05-07-2013, 05:29 AM   #4
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Join Date: Sep 2012
Location: Chillicothe, Ohio
Posts: 2,118
33" tires with 3:21 on the 3.6 is not bad at all. With a a light tire like the GY Duratrac you most likely wont feel any difference from stock tires.

2015 JKU Wifes
2013 JK mine
2000 TJ son's
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Old 05-07-2013, 06:38 AM   #5
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Join Date: May 2012
Location: Wonderess
Posts: 298
You'll be fine with 33s at that gear ratio, you won't feel much difference at all.
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Old 05-07-2013, 07:42 AM   #6
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Join Date: Apr 2012
Location: Rhode Island
Posts: 797
I put new wheels consisting of 17x9 XD Series Addicts and 285/70/17 GY D-Tracs. I see zero difference in acceleration. 3.6 and 3.21 drive them without an issue.

These are a smidge larger diameter than the 18" Sahara ones I pulled off. Those were just over 32". The D-Tracs measure 32.25" even. I gained the awesome stance and look that I was after.
2012 Dozer JK Sahara
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Old 05-07-2013, 08:29 AM   #7
Join Date: Sep 2010
Posts: 293
Well I will also be towing a small trailer, under 1500 lbs. but a rehear is cheaper than half doors. Cheaper still if I do it myself. And I wouldn't mind 4.11s either.

Will see if my dealership can transfer it.


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