JK-Forum.com - The top destination for Jeep JK and JL Wrangler news, rumors, and discussion

JK-Forum.com - The top destination for Jeep JK and JL Wrangler news, rumors, and discussion (https://www.jk-forum.com/forums/)
-   Modified JK Tech (https://www.jk-forum.com/forums/modified-jk-tech-2/)
-   -   Would i need to re-gear my JK?? (https://www.jk-forum.com/forums/modified-jk-tech-2/would-i-need-re-gear-my-jk-105709/)

mattyhfd 10-18-2009 01:02 PM

Would i need to re-gear my JK??
 
if i installed a 2.5 inch TF coil lift and a 1inch body lift, would i need to re-gear my rig?? if i would, why?

BBirish 10-18-2009 01:03 PM

matt you regear for bigger tires :thumbsup: depends what you wanna run

GoodysGotaCuda 10-18-2009 01:05 PM

x2, 20" lift and stock tires and you wouldnt need to regear. All in tire height.

marcoseddi 10-18-2009 01:05 PM

All depends
 
What do you have 2 door 4 door? What gear ratio do you have no? Did you get the towing package will depend if you have 3.73 or 3.21 assuming you dont have a rubicon. Are you going to upgrade your tires to 35's and up then probably but 33's you'll be fine on 3.21 gears.

nthinuf 10-18-2009 02:05 PM

Browse the FAQ's when you get a chance.

There is some good info there to get you headed in the right direction.

To name only a few:
Q: What size lift do I need to get in order to fit 33" Tires?
Q: What size lift do I need to get in order to fit 35" Tires?
Q: What size lift do I need to get in order to fit 37" Tires?
Q: What gear ratio should I be running with 35" tires?
Q: What gear ratio should I be running with 37" Tires?
Q: Is there a good chart that I can refference to help me determine what gear ratio I should have installed based on the tire size I am running and the RPM's that I hope to be running?

mattyhfd 10-18-2009 06:29 PM

i have a flame red 2dr X with the BFG KMs on it. wanna go either 33 or 35inch tire.

09jaykay 10-19-2009 08:19 AM

didn't u just re gear your jeep?:thinking:

Suffolk JK 10-19-2009 11:59 AM

If you want 33s, re-gear to 4.88 since you have an auto.

If you want 35s, re-gear to 5.13.

You DON'T want 33s, because sooner or later, you're going to want 35s, TRUST me.

You DON'T need to re-gear if you're only lifting it.

If you are going to re-gear, lock the axles while you're in there. There is NO point in re-gearing, then tearing it all apart again later on down the road to add lockers. Paying the labor twice is plain dumb.


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