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Old 09-25-2012, 10:17 AM   #1
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35

Who here as 35's on 2012 jeep jk 3.21 gears

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Old 09-25-2012, 10:19 PM   #2
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I have 35s on my 12 Rubicon. 18" wheels and 3" lift

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Old 09-26-2012, 05:12 AM   #3
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Quote:
Originally Posted by JMorey
I have 35s on my 12 Rubicon. 18" wheels and 3" lift
Do u have 3.21 gears
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Old 09-26-2012, 05:42 AM   #4
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I am running Duratrac's 315/75/16 (35") so far I have not had any problems. been running them for about 2000 miles including wheeling several times. THere are times that i feel like i would like to have the lower gears and will regear at some point, but for now it is running and working just fine.
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Old 09-26-2012, 05:48 AM   #5
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Here are a couple of pics
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Old 09-26-2012, 08:54 AM   #6
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Quote:
Originally Posted by SLA007
Here are a couple of pics
Looks good do u have 3.21 gears im thinking about going with AEV ProCal Module i hear it helps
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Old 09-26-2012, 09:08 AM   #7
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I do have the 3.21 gears. Not sure about the Module have really read to much about it. My Jeep runs fine tho, i can do 70 on the interstate and crawl up the hills on the trails no problem. Don't really use 6th gear but i am still only running about 2300 rpm and getting 16mpg on the highway.
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Old 09-26-2012, 09:47 AM   #8
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Quote:
Originally Posted by SLA007
I do have the 3.21 gears. Not sure about the Module have really read to much about it. My Jeep runs fine tho, i can do 70 on the interstate and crawl up the hills on the trails no problem. Don't really use 6th gear but i am still only running about 2300 rpm and getting 16mpg on the highway.
70 thats good 16 mpg not bad but minds automatic transmission and 4 door JKU Module supposely helps transmission shift different
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Old 09-26-2012, 01:10 PM   #9
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The AEV will only correct your speedometer and help with the gear shifting points. It will do nothing for performance. If you don't use the AEV Pro-call, your speedometer will be off with the bigger tires and so will your gas milage.
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Old 09-27-2012, 05:16 AM   #10
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Quote:
Originally Posted by whiteyjfm
The AEV will only correct your speedometer and help with the gear shifting points. It will do nothing for performance. If you don't use the AEV Pro-call, your speedometer will be off with the bigger tires and so will your gas milage.
AEV will help with the shift point so it don't fight between 4 & 5 gear
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Old 09-27-2012, 07:25 AM   #11
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Yea, have 3.21 gears and yes the shop that installed use ProCal. Works great and no issues at all.
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Old 09-27-2012, 07:53 AM   #12
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Quote:
Originally Posted by JMorey
Yea, have 3.21 gears and yes the shop that installed use ProCal. Works great and no issues at all.
Do u have a 4 door and what brand 35's are u running
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Old 09-27-2012, 03:19 PM   #13
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Yes on 4 door and Nitros
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Old 09-27-2012, 05:44 PM   #14
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Quote:
Originally Posted by JMorey
Yes on 4 door and Nitros
Terra grapplers or trail grapplers
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Old 09-27-2012, 08:15 PM   #15
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Trail grapplers
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Old 09-28-2012, 06:26 AM   #16
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Quote:
Originally Posted by JMorey
Trail grapplers
How's the mileage you getting out of them and what size
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Old 09-28-2012, 06:45 AM   #17
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I have 2012 Sport Unlimited. 6 speed with 3.21 gears. The dealer had a leveling kit and 35/12.5r18 nitto trail grapplers put on. The dealer here does that to a lit of the new jeeps to help sale them I suppose. I don't have any power problems like a lot of people say you will have with 3.21, but then again I traded an H2 Hummer for the Jeep. I also haven't driven another jeep other than the '97 wrangler with 5 speed and 4 banger so...Anyway, I haven't been on the interstate but a couple of times getting16-17 and 12-13 in town.
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Old 09-29-2012, 07:50 AM   #18
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Mikeage is around 16-18, does well on highway. Speed on highway here is 75 and does great
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Old 10-14-2012, 06:38 PM   #19
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Quote:
Originally Posted by SLA007 View Post
Here are a couple of pics
Would you have prefered going with 18 rims and the same size tire (changing the rim size of course )?

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