4.88’s with 32’s and an AW4

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Jan 5, 2019 | 05:25 PM

#16

00t444e

CF Veteran

Joined: Nov 2015

Posts: 3,636

Likes: 469

From: Southern OH

Year: 1997

Model: Cherokee(XJ)

Engine: 4.0

Quote:

Originally Posted by Rock Toy

I did the math and with 32 inch tires, 4.88 gears and an automatic transmission at 70mph I came up with 2930rpm.

70x366x4.88x.75÷32=2930.28

it's 336 not 366.

Jan 5, 2019 | 06:31 PM

#17

offroadman83

Newbie

Joined: Mar 2010

Posts: 19

Likes: 0

Model: Cherokee

Ill be running 4.88s and 33s on my cherokee......Ive ran 4.56s and 31s and no problems.......can't wait!

Jan 6, 2019 | 01:21 AM

#18

Rock Toy

CF Veteran

Joined: Feb 2010

Posts: 2,095

Likes: 3

From: Cove, OR

Year: 1993

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by 00t444e

it's 336 not 366.

You're correct I screwed it up, sorry.

Jan 14, 2019 | 08:49 AM

#19

chevmec1

Newbie

Joined: Feb 2018

Posts: 20

Likes: 2

From: Arizona

Year: 1993

Model: Cherokee(XJ)

Engine: 4.0

I run 4.88 with 33s approx. 2500 rpms at 65mph. Its great off road!

Jan 24, 2019 | 04:45 PM

#20

Suprmn

Member

Joined: Sep 2017

Posts: 110

Likes: 1

From: Seattle

Year: 1988

Model: Cherokee

Engine: 4.0 Renix

I dont see what year your cherokee is. Mine is a 1988 renix and 4.88 with 33's was a perfect combination. I wouldnt hesitate to try it with 32's. gives you the ability to move to bigger tires in the future as well,

Jan 24, 2019 | 05:43 PM

#21

chevmec1

Newbie

Joined: Feb 2018

Posts: 20

Likes: 2

From: Arizona

Year: 1993

Model: Cherokee(XJ)

Engine: 4.0

Mine is a 93.

Jan 25, 2019 | 11:40 AM

#22

WyoCherokee

CF Veteran

Joined: Jan 2015

Posts: 1,364

Likes: 37

From: Dont Colorado Wyoming

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

4.88's with 265/75/16(32's) was doable in my XJ, great in town but 70mph tops interstate. she was really screaming.
4.88's with 35's is a perfect combo in my MJ. 75mph tops plenty of grunt in town and will happily cruise on the interstate.

Mar 5, 2019 | 03:11 PM

#23

viciousone

Newbie

Joined: Jan 2019

Posts: 11

Likes: 0

From: PDX Metro Area

Year: 2000

Model: Cherokee (XJ)

Good to see some of these hints/tips......probably going to stick with the 4.88s I just got instead of selling them for 4.56s.....got a 6” lift on 33s and don’t need to go 70mph.......final gear ratio ends up around 4.15.....mpg sucks but not a daily ......and leaves me with the option to go to 35s.....someone screenshot their tach on flat surface going 65mph on 33’s and post it please......just curios to see the rpms vs projected math of the rpms......thanks in advance if someone does it!