4.10 or 4.56 on a 2012 JK

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Mar 11, 2012 | 03:59 AM

#11

JPop

JK Junkie

Joined: Jul 2008

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From: Lakewood, OH

I'd feel a lot more comfortable with 4.56s than 4.10s. Room for larger tires in the future, and better off road performance. If 4.30s were available that would probably be the best call.

Mar 11, 2012 | 04:48 AM

#12

hogdriver

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Joined: May 2011

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From: Melbourne

4.56 cost?

Quote:

Originally Posted by hasten3

I put 4.56 gears in my 2012 JKU auto and I am running 35's on a 3.5" AEV lift. Perfect setup I love it...plenty of torque and power and I run about 2700rpm at 70 mph, plus I am getting 17 mpg around town.

Hasten3

I have a 2012 JKU automatic with 35" Nittos and the 4:10s. How much did a set of 4:56s cost ya? What brand did get.

Mar 11, 2012 | 05:59 AM

#13

thedragon

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Joined: Feb 2012

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From: Connecticut

Nothin' to say re: the thread, but that is one AWESOME avatar, jackedup!!

Mar 11, 2012 | 07:27 AM

#14

hasten3

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Joined: Aug 2010

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From: Lantana, Texas, United States

Quote:

Originally Posted by hogdriver

Hasten3

I have a 2012 JKU automatic with 35" Nittos and the 4:10s. How much did a set of 4:56s cost ya? What brand did get.

Superior is the only one making the 4.56 at this time. The gears were about 269 a set and the install with a new master bearing kit and synthetic oil was about 750.

Mar 12, 2012 | 10:37 AM

#15

Shotgun_Willie

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Joined: Jun 2011

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From: Richland MS

I just got a 12 auto with 3.73 gears and was wondering how it is power wise with 35's

Last edited by Shotgun_Willie; Mar 12, 2012 at 07:06 PM.

Mar 13, 2012 | 10:54 AM

#16

BAD 2012 JK

Thread Starter

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Joined: Feb 2012

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From: West Jefferson, Ohio

I did my lift and tires when the JK was only 2 weeks old so I don't remember how it felt in stock trim but I only have 3.21's now and its alot better than you would expect. The dealer originally told me it had 3.73's because it had a tow package and that ended up being a lie. If it hadn't been for the RPM's @ 70 MPH not calculating out correctly I wouldn't have checked the original build sheet and figured out that it didn't have 3.73's

Mar 14, 2012 | 04:03 PM

#17

Jackedup

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From: Abingdon Md

Quote:

Originally Posted by IZZNICE

Wayyyyyy of topic. Love your profile pic!!! ::thumbs way up::

thanks, she's what wet dreams are made of

Mar 14, 2012 | 04:03 PM

#18

Jackedup

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Joined: Sep 2011

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From: Abingdon Md

Quote:

Originally Posted by thedragon

Nothin' to say re: the thread, but that is one AWESOME avatar, jackedup!!

thanks dude!!!

Mar 14, 2012 | 04:18 PM

#19

snopro269

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Joined: Oct 2010

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From: rochester,mn

Quote:

Originally Posted by l00py1211

Im running the nitto 35's on my 12 rubi with stock 4:10's and i noticed a huge loss in mpg's and 6th gear is only good on flat roads now. I would def. go with 4.56 or even lower. Just my 2 cents.

But isn't the manual 2012 less rpm output than the auto 2012 so an auto might not be as bad

Mar 14, 2012 | 04:21 PM

#20

snopro269

JK Super Freak

Joined: Oct 2010

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From: rochester,mn

Quote:

Originally Posted by Shotgun_Willie

I just got a 12 auto with 3.73 gears and was wondering how it is power wise with 35's

I drove around with a set of 35x12.5x17 MTR'S kevlars with 3.73 in a friends 2012 Sahara and I thought it was great power. The MTRs though are one of the lightest 35's out there though.

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