The Best!
Thread Starter
JK Freak
Joined: May 2011
Posts: 673
Likes: 0
From: Houma, La
I have 3.21's right now. Ain't worth a crap either. Can't use 6th gear on highway.
Thread Starter
JK Freak
Joined: May 2011
Posts: 673
Likes: 0
From: Houma, La
A Spicer gear set would be the best. However if you want a ratio that Spicer doesn't offer then you will have to deal with aftermarket parts.
What is your end tire size goal?
You really only want to do this one time....unless you have buckets of expendable cash laying around
What is your end tire size goal?
You really only want to do this one time....unless you have buckets of expendable cash laying around
JK Enthusiast
Joined: Jan 2013
Posts: 257
Likes: 0
From: Carmel
Been hearing this a lot about not being able to use 6th gear with 3.21's. I have a 4" lift 35" tires and 3.21's and as long as I'm going 70+ 6th gear is not a problem. Yes I find my self downshifting out of it more for hills but I figure that's normal since the upgrades.
Thread Starter
JK Freak
Joined: May 2011
Posts: 673
Likes: 0
From: Houma, La
Been hearing this a lot about not being able to use 6th gear with 3.21's. I have a 4" lift 35" tires and 3.21's and as long as I'm going 70+ 6th gear is not a problem. Yes I find my self downshifting out of it more for hills but I figure that's normal since the upgrades.
JK Enthusiast
Joined: Jan 2013
Posts: 257
Likes: 0
From: Carmel
Hmm I'm assuming you used the pro cal or something similar to dial in your new tire size? I have been driving it a lot lately since the instal and my mpg are 17c-19h and I don't drive so by any means. I live in a area where there are decent amount of hills and flat spots so for me getting this kind of mpg I was very surprised and happy.
Thread Starter
JK Freak
Joined: May 2011
Posts: 673
Likes: 0
From: Houma, La
Hmm I'm assuming you used the pro cal or something similar to dial in your new tire size? I have been driving it a lot lately since the instal and my mpg are 17c-19h and I don't drive so by any means. I live in a area where there are decent amount of hills and flat spots so for me getting this kind of mpg I was very surprised and happy.
JK Super Freak
Joined: Oct 2009
Posts: 1,381
Likes: 1
From: East Bridgewater, MA
Thought all gears for the JK were made overseas in either India, china or South Korea. I know all the 4.88 and 5.13 by Yukon, Superior and G2 are all made there. The gear sets are basically the same.
Maybe the 4.56 are made somewhere else but I haven't heard about it. So if the OP is asking which brand is best and my above understanding is still true, it doesn't matter. They are all the same.
Maybe the 4.56 are made somewhere else but I haven't heard about it. So if the OP is asking which brand is best and my above understanding is still true, it doesn't matter. They are all the same.
JK Newbie
Joined: Apr 2012
Posts: 60
Likes: 0
From: Columbia, SC
Did you measure the tire like the instructions say? I ask because when I measured my 35x12.50x17's they only measured to 34.25" tall. I programed that into the computer and verified my speed with 2 different gps's to ensure I got the right calibration. Everything is good with mine.
Thread Starter
JK Freak
Joined: May 2011
Posts: 673
Likes: 0
From: Houma, La
Did you measure the tire like the instructions say? I ask because when I measured my 35x12.50x17's they only measured to 34.25" tall. I programed that into the computer and verified my speed with 2 different gps's to ensure I got the right calibration. Everything is good with mine.