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May 10, 2012 | 08:38 PM

ealford14

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Joined: May 2012

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Model: Cherokee

Need Answer ASAP!

I have a 2000 Jeep Grand Cherokee with 35 12.50's. I want to regear it so it gets better gas mileage! What gears should I use and how much would it help my MPG???

May 10, 2012 | 10:02 PM

Bustedback

CF Veteran

Joined: Feb 2010

Posts: 12,367

Likes: 23

From: Oroville, CA

Year: 1995

Model: Grand Cherokee

Engine: 4.0 with all of the noise and clatter

4.56's, but the D35 may not hold up to 35's and gears for too long if you wheel your rig.

May 10, 2012 | 11:01 PM

Gorillaxj

CF Veteran

Joined: Sep 2010

Posts: 4,968

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From: Salt Lake City, UT

Year: 2000

Model: Cherokee

Engine: 4.0L

Quote:

Originally Posted by Bustedback

4.56's, but the D35 may not hold up to 35's and gears for too long if you wheel your rig.

if its a V8 I would do 4.56's, if its a 4.0 I would do 4.88's. I like my 4.56's but when its loaded up with gear I wish I did 4.88's.... (I have a 4.0l)

just my opinion, but 4.56's should be fine either way.

May 11, 2012 | 08:00 PM

Monkeybutt2000

Junior Member

Joined: Oct 2011

Posts: 55

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From: Lafayette,IN

Year: 1997

Model: Grand Cherokee

Sorry,but better gas mileage with 35's??

May 12, 2012 | 12:37 AM

Bustedback

CF Veteran

Joined: Feb 2010

Posts: 12,367

Likes: 23

From: Oroville, CA

Year: 1995

Model: Grand Cherokee

Engine: 4.0 with all of the noise and clatter

Better after a regear for sure, but still not as good as with stock tires and gearing. The regear will make up for the larger tires and keep the RPMs close to what they were in stock trim, but moving the extra mass of the larger rubber will hurt the MPGs.