Staying "Fast"
Thread Starter
JK Newbie
Joined: Nov 2010
Posts: 82
Likes: 0
From: San Francisco, CA
Staying "Fast"
With Christmas coming up, I'm going to be doing a lot of highway driving to be with the fam. That said, with my stock 3.73 gears and 34" tires, anything over 65 mph means my auto dropping a gear and staying there, obviously worse gas mileage.
I'm not looking for opinions on whether you would drive faster than 70 or not. I'd just like to know if gearing up would help me keep speed on the freeway. Maybe 4.88s or 5.13s. I've tried searching for some time now and haven't found anything useful on this specific topic.
I'm not looking for opinions on whether you would drive faster than 70 or not. I'd just like to know if gearing up would help me keep speed on the freeway. Maybe 4.88s or 5.13s. I've tried searching for some time now and haven't found anything useful on this specific topic.
JK Super Freak
Joined: Oct 2010
Posts: 1,433
Likes: 0
From: Flowery Branch, GA
If you re-geared, it would be better. Your RPMS will likely be at a better number. You'll be able to keep up well with 70 mph. Since you have 34s, i would say go with 5.13s. That way you have some room if you wanted to go up a tire size or two.
You have an auto, correct?
You have an auto, correct?
JK Jedi Master
Joined: Aug 2007
Posts: 15,665
Likes: 4
From: Hammond Louisiana
With Christmas coming up, I'm going to be doing a lot of highway driving to be with the fam. That said, with my stock 3.73 gears and 34" tires, anything over 65 mph means my auto dropping a gear and staying there, obviously worse gas mileage.
I'm not looking for opinions on whether you would drive faster than 70 or not. I'd just like to know if gearing up would help me keep speed on the freeway. Maybe 4.88s or 5.13s. I've tried searching for some time now and haven't found anything useful on this specific topic.
I'm not looking for opinions on whether you would drive faster than 70 or not. I'd just like to know if gearing up would help me keep speed on the freeway. Maybe 4.88s or 5.13s. I've tried searching for some time now and haven't found anything useful on this specific topic.
https://www.jk-forum.com/forums/show...76&postcount=4 see chart
https://www.jk-forum.com/forums/show...light=5.13%27s
https://www.jk-forum.com/forums/show...ears%2Fdriving
https://www.jk-forum.com/forums/show...ears%2Fdriving
https://www.jk-forum.com/forums/show...light=5.13%27s
https://www.jk-forum.com/forums/show...light=5.13%27s
Just a few. There's plenty more, you have to rummage though them and gleen the info u need.
Last edited by mkjeep; Nov 20, 2010 at 05:54 PM.
Thanks again guys
JK Jedi
Joined: Aug 2007
Posts: 5,813
Likes: 0
From: Kenai Peninsula, Alaska
Just a thought.....Like you said, Christmas is on the way and money can get tight. Many folks are going to the Superchips flaspaq and are getting enough improvement in performance that they feel the regear is not that important.....at least for the time being. It is no way like getting new gears, but for far less price it does make a lot of people happy. Like I said.....just a thought. 
JK Newbie
Joined: Dec 2008
Posts: 80
Likes: 0
From: South Florida
Why is overdrive that important? If you regear, then the overdrive gear does what, becomes a 1/1 gear? So, you gain an extra gear. But nothing really changes in the grand scheme of things. Except that you roll out better from a stop. If hard starting is the issue, then go for it. Otherwise, just turn the overdrive off. You don't need it.
