2012 w/4.88 and 35"s??
#1
JK Newbie
Thread Starter
2012 w/4.88 and 35"s??
Hey I have a 2012 auto 2dr with 35"s KM2, 2.5 lift and all the steel front/rear bumpers.
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
#2
Hey I have a 2012 auto 2dr with 35"s KM2, 2.5 lift and all the steel front/rear bumpers.
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
#4
Hey I have a 2012 auto 2dr with 35"s KM2, 2.5 lift and all the steel front/rear bumpers.
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
In addition, most of the offroading stuff is constantly on the Jeep.
It's a Rubi, so I have 4.1 gearing.
Before re-gearing, I decided to see how it does with the 4.1 . It goes nicely, good acceleration.
Maybe a bit lazy showing the 'ECO' on highways...
IF I ever re-gear, it'll be the recommended 4.56 .
Yours is a 2dr, so it's lighter and has a better power/weight ratio than my 4dr.
4.56 will, IMO, be perfect.
I really don't see how you'd benefit from 4.88 . Your engine will RPM higher for no reason.
Last edited by GJeep; 03-10-2013 at 11:49 AM.
#5
JK Enthusiast
Join Date: Oct 2011
Location: Clarksburg Maryland
Posts: 358
Likes: 0
Received 0 Likes
on
0 Posts
Why regear? I've got a 2013 with 37's and 410's and it seems just fine. My Nitto 37's are certainly heavier than 35 KM2's. save your money and stick with what you've got. You just wouldn't see that much of a difference with 456's.
#7
JK Freak
Join Date: Mar 2012
Location: Los Angeles, CA
Posts: 752
Likes: 0
Received 0 Likes
on
0 Posts
Yours is a bit different since its an 08. Op has a '12..4.56 will be good, but 4.88 will work and leave room for when he is ready for 37.... Lol a post above shows a '12 with 37's and 4.88 at 3000 rpm @ 70 mph seems a bit high. Maybe not a true 37
Trending Topics
#8
JK Enthusiast
My '12 auto w/ 4.56 and 35" duratracs sit at ~2700 rpm @ 70mph, and its perfect. 4.88's may be too low for you, but like someone else mentioned, it may give you a bit more room to grow. Although 4.56's and 37s wouldn't be bad either.
#9
Hey I have a 2012 auto 2dr with 35"s KM2, 2.5 lift and all the steel front/rear bumpers.
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
I get my gears redone in 2 weeks, I want 4.56 but the mechanic keeps says 4.88, and yes I seem the chart 1000 times. Most of my driving is highway during the week.
My question is anyone with 4.88 auto and a similar set up? What's the real world rpms at 60-65 mph?
Or should I stick to my guns with 4.56? Thanks
#10
JK Newbie
Thread Starter
Thanks for the replies, ill prob go with the 4.56 cause it's kind of hilly on the north shore here. But I'm glad to see I'm not crazy, I figured 4.88 was too low idk why he keeps pushing them lol