Help with gears
Thread Starter
JK Newbie
Joined: Apr 2012
Posts: 68
Likes: 0
From: Harrisburg,PA.
Help with gears
I have a 2012 JK with the 3.6 manual 6 speed and 3.73 gears. In the near future I plan on moving up from 33s to 37s and I know I have to regear. My question is what gears would get me back to the factory rpms. Thanks for any help Charlie
JK Enthusiast
Joined: Jan 2011
Posts: 124
Likes: 0
From: Floral Park, LI, NY / Richmond, Va
I'm in the same boat, '12 with a 6speed. After a bunch of deliberation, I had decided on 4.56 because I never planned on going more then 35"s. Now I'm picking up a Dana 44 front, and really debating going with 4.88 instead. Looking forward to seeing some input.
JK Super Freak
Joined: Dec 2009
Posts: 1,695
Likes: 3
From: Texas
Remember, bigger tires means more rotational inertia - you should think about going a little deeper than just matching RPM. so if a 4.10 matches original RPM, think about a 4.56 or 4.88. It will also prep you should you choose to go to even bigger (it's gonna happen) tires.