31's with 3.55

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May 29, 2012 | 01:38 PM

Michael952

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Senior Member

Joined: Dec 2011

Posts: 930

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From: WV

Year: 98

Model: Cherokee

Engine: 4.0 i6

31's with 3.55

So I've been planing things for this summer and right now I know I'm going to lift 3" but not sure how my gears will do with 31s
Anyone running 3.55 and 31s?

May 29, 2012 | 01:45 PM

Xj88

Old School CF Moderator

Joined: May 2010

Posts: 9,652

Likes: 3

From: Chattanooga

Year: 2001

Model: Cherokee

Engine: 4.0

Im sure almost everyone running 31s are on stock 3.55s I am and I know 4 buddies that are. I think the ratio is fine for 31s..couldn't tell a noticible difference in mileage or power. Im at 5 inches and 31s

May 29, 2012 | 01:53 PM

Lowrange2

Junior Member

Joined: May 2008

Posts: 15,016

Likes: 11

From: +34° 25' 35.67", -81° 21' 12.04"

Year: 1993

Engine: 4.0

I noticed a SMALL decrease in power when I put 31s on my Jeep. Not noticable enough to justify the regear.

Roll with it.

May 29, 2012 | 01:53 PM

NorCalJeep

CF Veteran

Joined: May 2011

Posts: 2,135

Likes: 1

From: Santa Rosa, California

Year: 1987 Comanche,1990

Model: Cherokee

Engine: 4.0L Renix

31s with 3.55 here too; a lot of people here are too cheap to regear for 31-33s. My gas hurts

May 29, 2012 | 02:00 PM

Michael952

Thread Starter

Senior Member

Joined: Dec 2011

Posts: 930

Likes: 0

From: WV

Year: 98

Model: Cherokee

Engine: 4.0 i6

Well I guess I'll probably go with 31's
How much does it hurt your mpg?

May 29, 2012 | 02:25 PM

FisherXJ

Member

Joined: May 2012

Posts: 129

Likes: 0

From: Somerset,Kentucky

Year: 1986

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Michael952

Well I guess I'll probably go with 31's
How much does it hurt your mpg?

i lost about 1 or 2 mpg

May 29, 2012 | 02:35 PM

pickles

Senior Member

Joined: Jun 2010

Posts: 703

Likes: 4

Year: 1993

Model: Cherokee

Engine: 4.0

I run 32's and still pull two snowmobiles in an enclosed trailer

. 31's with 3.55's is no problem

31's with 3.55

31's with 3.55

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