Gears
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JK Enthusiast
Joined: Nov 2011
Posts: 110
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From: Studio City California
Gears
Currently I have a 4 door auto with 35's and 5:13 gears. I'm thinking about switching to a 4:56 do to highway driving and screaming down the freeway. Any thoughts. Im not going with a bigger tire anytime soon.
JK Junkie
Joined: Sep 2010
Posts: 2,539
Likes: 2
From: Tempe AZ
3.8L- Stick with 5.13's for the slushbox 4 speed auto
3.6L- 4.56 will probably serve you much better
JK Super Freak
Joined: Dec 2010
Posts: 1,060
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From: South Carolina
I have 2 dr., 3.8l, auto, 5:13's with 315 Duratrac's and only turn 2500 rpm at 70mph! Not screaming at all.
JK Super Freak
Joined: Apr 2008
Posts: 1,267
Likes: 2
From: Thunder Bay, Ontario
I am assuming you have a 3.6l with 5speed auto. In which case you are correct. 4.56 is best suited.
JK Freak
Joined: Jun 2014
Posts: 724
Likes: 5
From: Florence, SC
You can go to a 37" tire cheaper than you can regear. Mastercraft MXT 37X12.5R17's are 270 each. If you bought 5 and had them installed, that would be around 1500 bucks. 50K tire, great performance on and off road, and they only weight 72 pounds each. (lighter than many 35's)
Regearing, you need the gears and install kits, then labor. Sounds like you've been down that road before already, so you know that's a 2K adventure.
Just thought i'd toss that out there.... Bumping up to a light weight 37 like that will accomplish the same thing, and you save 500 bucks and look much cooler.
Regearing, you need the gears and install kits, then labor. Sounds like you've been down that road before already, so you know that's a 2K adventure.
Just thought i'd toss that out there.... Bumping up to a light weight 37 like that will accomplish the same thing, and you save 500 bucks and look much cooler.
JK Super Freak
Joined: Nov 2010
Posts: 1,053
Likes: 0
From: East Stroudsburg, PA
You can go to a 37" tire cheaper than you can regear. Mastercraft MXT 37X12.5R17's are 270 each. If you bought 5 and had them installed, that would be around 1500 bucks. 50K tire, great performance on and off road, and they only weight 72 pounds each. (lighter than many 35's)
Regearing, you need the gears and install kits, then labor. Sounds like you've been down that road before already, so you know that's a 2K adventure.
Just thought i'd toss that out there.... Bumping up to a light weight 37 like that will accomplish the same thing, and you save 500 bucks and look much cooler.
Regearing, you need the gears and install kits, then labor. Sounds like you've been down that road before already, so you know that's a 2K adventure.
Just thought i'd toss that out there.... Bumping up to a light weight 37 like that will accomplish the same thing, and you save 500 bucks and look much cooler.
He would probably ghave to invest that 500.00 into flat fenders to clear the 37s....but would still look cooler!!
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JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
His "what gears should I get" thread from a few years ago is what talked him into 5.13's. Obviously, that advice has not changed in the last couple years. But with flat roads and no headwinds and whatever else, maybe he can get away with lower rpm's/less hp/less torque. To most of us, the loss of power wouldn't be worth the cost of regearing again, but maybe he has a bunch of cash laying around. Who knows. Probably just looking for that one person out of a thousand (I know that ratio is too high, probably closer to one in five or ten thousand... 
) who will tell him that they like the performance of a 3.8 auto with 35's and 4.56's.
) who will tell him that they like the performance of a 3.8 auto with 35's and 4.56's.