5.13 or 5.38's for auto 4 door with 35's
#1
JK Enthusiast
Thread Starter
Join Date: Jan 2010
Location: rOOSEVELT, uTAH
Posts: 103
Likes: 0
Received 0 Likes
on
0 Posts
5.13 or 5.38's for auto 4 door with 35's
Hi,
I'm ready to get gears, but am a little confused with the gears I need. I looked at the FAQ and searched, and that helped a little. But I need actual driver input, I'm sure there will be some flaming and scientific evidence. But would rather hear from actual people running them.
I live at about 5300 ft. elev. if that matters. And am running 35 BFG, 16x8 wheels.
Thanks
I'm ready to get gears, but am a little confused with the gears I need. I looked at the FAQ and searched, and that helped a little. But I need actual driver input, I'm sure there will be some flaming and scientific evidence. But would rather hear from actual people running them.
I live at about 5300 ft. elev. if that matters. And am running 35 BFG, 16x8 wheels.
Thanks
#2
JK Enthusiast
Join Date: Jun 2009
Location: Northern KY
Posts: 186
Likes: 0
Received 0 Likes
on
0 Posts
Search can be your friend.
I don't have any driving experience with 5.13's or 5.38's and this is not intended to flame only to help inform.
From what I found from people who i know who have 5.13's. They say they want 5.38's. Also it makes a difference if it's a Rubicon or not. The best thing you can do is find someone with both of these setups and test drive them. That's the only advise i can give.
This has been discussed over and over on here so you will always be able to find something when you use the search button. The people on here are giving actual advise. It's not made up.
Like
https://www.jk-forum.com/forums/show...3%27s+5.38%27s
https://www.jk-forum.com/forums/show...3%27s+5.38%27s
https://www.jk-forum.com/forums/show...3%27s+5.38%27s
From what I found from people who i know who have 5.13's. They say they want 5.38's. Also it makes a difference if it's a Rubicon or not. The best thing you can do is find someone with both of these setups and test drive them. That's the only advise i can give.
This has been discussed over and over on here so you will always be able to find something when you use the search button. The people on here are giving actual advise. It's not made up.
Like
https://www.jk-forum.com/forums/show...3%27s+5.38%27s
https://www.jk-forum.com/forums/show...3%27s+5.38%27s
https://www.jk-forum.com/forums/show...3%27s+5.38%27s
#3
JK Enthusiast
Join Date: Aug 2009
Location: La Quinta, Ca.
Posts: 367
Likes: 0
Received 0 Likes
on
0 Posts
hi,
i'm ready to get gears, but am a little confused with the gears i need. I looked at the faq and searched, and that helped a little. But i need actual driver input, i'm sure there will be some flaming and scientific evidence. But would rather hear from actual people running them.
I live at about 5300 ft. Elev. If that matters. And am running 35 bfg, 16x8 wheels.
Thanks
i'm ready to get gears, but am a little confused with the gears i need. I looked at the faq and searched, and that helped a little. But i need actual driver input, i'm sure there will be some flaming and scientific evidence. But would rather hear from actual people running them.
I live at about 5300 ft. Elev. If that matters. And am running 35 bfg, 16x8 wheels.
Thanks
Last edited by Steel Rain; 08-08-2010 at 04:09 PM.
#4
I've got the 4-door w/Auto...Rubi pkg. and running 5.13's with 35" BFG KM2.
It's still a little steep (2600 RPM @70MPH). I went with 5.13's knowing that in another year or so I'll move up to 37" tires....and then it will be better. I personally think 5.38's are too steep unless you're going to run 37" tires now. Mine is also my daily driver, so I wanted to keep the gas mileage in check.
Hope this helps.
It's still a little steep (2600 RPM @70MPH). I went with 5.13's knowing that in another year or so I'll move up to 37" tires....and then it will be better. I personally think 5.38's are too steep unless you're going to run 37" tires now. Mine is also my daily driver, so I wanted to keep the gas mileage in check.
Hope this helps.
#6
JK Enthusiast
Thread Starter
Join Date: Jan 2010
Location: rOOSEVELT, uTAH
Posts: 103
Likes: 0
Received 0 Likes
on
0 Posts
It is a Rubicon. Daily driver, moderate offroad.
I have heard or read both, that the 5.13 is just fine, but another say "that they got better gas mileage moving from 5.13s to 5.38s". Just want to get it clear, before making the jump. Thanks again
I have heard or read both, that the 5.13 is just fine, but another say "that they got better gas mileage moving from 5.13s to 5.38s". Just want to get it clear, before making the jump. Thanks again
Trending Topics
#8
JK Enthusiast
Keep in mind, 35" BFG's are about 33"s tall.
I have 5:13's, and I ran 35 toyo's for 30,000 miles, and Goodyear's for over 30,000 miles.
Both of those brands run closer to the true size, and I wish I had gone with the 5:38's
I have 5:13's, and I ran 35 toyo's for 30,000 miles, and Goodyear's for over 30,000 miles.
Both of those brands run closer to the true size, and I wish I had gone with the 5:38's
#10
JK Enthusiast
Join Date: Feb 2010
Location: Plover, WI & Benson, AZ
Posts: 422
Likes: 0
Received 0 Likes
on
0 Posts
I'm another one that went with 513s on 34"MTRs in an Unlimited Rubi and completely satisfied with them. My mpgs dropped from 16.5 to 15 when I regeared to 513s and would have been worse with 538s which I don't need for performance. 2250 rpm at 65 mph is a good balance.