Yet another Gear thread! 32"33" tires. - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WJ Grand Cherokee Forum > Yet another Gear thread! 32"33" tires.

TeraFlex Now at Rockridge 4WD! BEST DEALS around!Alloy usa heavy duty ball joint kitsENGO QUADLUX 6" to 54" LED AMBER AND WHITE MULTI

Reply
Unread 03-30-2010, 10:51 AM   #1
Max78
Registered User
1992 XJ Cherokee 
 
Join Date: Jun 2009
Location: Tucson,AZ
Posts: 324
Yet another Gear thread! 32"33" tires.

Ok guys,
My front and rear axles are in need of a rebuild. Wheel bearings are shot and I think I managed to get water in them. So Iím on here posting yet another gear thread. Iím going to be spending $1431 to rebuild my axles and I want opinions and suggestions before I go through with it.

I have the 4.7 MPIF V8, 545RFE trans, 242HD TC.

I currently have 32Ē tires on my WJ with 80% tread, and I donít plan on buying a new set any time soon. When I do buy new tires, I plan on going to a 33Ē tire.

Here is what I have found out so far.
29Ē with 3.73 @ 75 = 2,171rpm (Stock)
------------------------------
32Ē with 3.73 @ 75 = 1,968rpm
32Ē with 4.10 @ 75 = 2,163rpm
32Ē with 4.56 @ 75 = 2,405rpm
------------------------------
33Ē with 4.10 @ 75 = 2,097rpm
33Ē with 4.56 @ 75 = 2,333rpm

I read allot that people say 3.73 to 4.10 is not worth it. I agree, but I take the freeway every day to work and donít like the idea of 2,400rpm. But then again I would love the quick get up and go I would get with the deeper gears. I plan on adding body armor, bumpers, roof rack, and the likes to it someday. So I would want the deeper gears for the added weight. But Iím still not too sure. I never tow anything, Donít go on long trips to often.

Right now Iím leaning towards the 4.56 gears. I just want some people to throw their opinions out there, as well as share their experiences. $1,431 is allot of money to me. I donít want to invest in something Iím not going to be happy with.

__________________
92 Cherokee - All nude and in need of some tlc!
Max78 is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 11:29 AM   #2
rustynail
Registered User
1996 ZJ 
 
Join Date: Jul 2008
Location: Vancouver, British Columbia, British Columbia
Posts: 1,108
If you go with 4:10's your rpm's will be slightly lower than stock gears and tires yet you'll be turning heavier tires and in the future adding heavy bumpers, etc. My vote is 4:56
__________________
- Russ
5.9 ORVIS 33x12.5 MTR-Kevlar, 7" fr adj IR LA's, 7" rr adj RE SF SA's, adj JKS TB's, RE SB disc, RE Springs, JKS ACOS, 13" RS9000XL's, OME SS, NP231, Durango box, IR Sliders, IR Skid, 3" Flowmaster 70, K&N, Superwinch EPi9.0, Optima Yel, 2 air comp, Alpine, Garmin, Sunroof
rustynail is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 12:25 PM   #3
Planetcat
Registered User
2004 WJ 
 
Join Date: Jan 2010
Location: West of the Mississippi
Posts: 1,410
Quote:
Originally Posted by rustynail View Post
If you go with 4:10's your rpm's will be slightly lower than stock gears and tires yet you'll be turning heavier tires and in the future adding heavy bumpers, etc. My vote is 4:56
I agree....
__________________
2004 WJ 4.7L, 1959 CJ-5, 1990 XJ Limited, 1996 XJ (sold), 1989 YJ Wrangler 4.2L (Sold)
Planetcat is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 01:26 PM   #4
CostcoPizza
Fresh Baked
 
CostcoPizza's Avatar
1998 ZJ 
 
Join Date: Nov 2009
Location: Earth, Mostly
Posts: 1,360
4:56's and slow down a bit.
CostcoPizza is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 02:03 PM   #5
MoonyJohn
Mountain Climber
 
MoonyJohn's Avatar
2004 WJ 
 
Join Date: Feb 2008
Location: West Linn, Oregon
Posts: 6,664
I vote 4.56 only because you will be upgrading to 33's later down the road. Just slow it down on the freeways.
__________________
"Water covers 3/4 of the earth, Jeep covers the rest"
MoonyJohn is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 02:15 PM   #6
Max78
Registered User
1992 XJ Cherokee 
 
Join Date: Jun 2009
Location: Tucson,AZ
Posts: 324
I like to go the speed limit at least (75). But from the looks of it I'm more and more likely going to go with the 4.56 and just stay in the slow lane :\
__________________
92 Cherokee - All nude and in need of some tlc!
Max78 is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 02:19 PM   #7
rugermack
Registered User
1995 ZJ 
 
Join Date: Feb 2009
Location: Sonoita, Arizona
Posts: 2,093
That can be scary on I-10 in rush hour traffic.
__________________
95' Jeep Grand Cherokee Laredo, 148k, 5.2, NP242, 46RH, 4" RC lift, all new adjustable ca's(2 IRO front uppers and the rest RC adjustables), nitro shocks, JKS TB's, Jet Chip, Dynamax cat back, Magnaflow cat, GTP hood vents. 31" Pro Comps with Rock Krawler "D"s. Westin brush/grill guard with Hella 500s, 411's, Solid diff covers, detroit locker rear, power lock in front, SYE and Tom Wood's front/rear shafts, RE discos, BPE's, d-rings front and back, factory tc and rad skid, hitch, Sliders next.
03' Jeep Grand Cherokee Laredo, (wifes Jeep) 99k, 4.7 5 speed auto, K&N, KYB shocks, drilled-slotted rotors, All the toys.
2000' Ford Superduty, F250, 7.3, 198K, 37's, too much to list.

Built Not Bought #257

Parts for sale d30 and d35 parts http://www.jeepforum.com/forum/f126/...-parts-1004499
rugermack is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 02:29 PM   #8
Planetcat
Registered User
2004 WJ 
 
Join Date: Jan 2010
Location: West of the Mississippi
Posts: 1,410
Quote:
Originally Posted by Max78 View Post
I like to go the speed limit at least (75). But from the looks of it I'm more and more likely going to go with the 4.56 and just stay in the slow lane :\
You should be fine tach'ing 2300-2500 on the highway. It's no different than someone who drives their stock jeep 80-85 mph on a regular basis. My XJ w/4.56's and 32's tach'ed 2800 on the highway for many years with no problems.
__________________
2004 WJ 4.7L, 1959 CJ-5, 1990 XJ Limited, 1996 XJ (sold), 1989 YJ Wrangler 4.2L (Sold)
Planetcat is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 02:38 PM   #9
Max78
Registered User
1992 XJ Cherokee 
 
Join Date: Jun 2009
Location: Tucson,AZ
Posts: 324
Some days it crawls some days it flies. . . I like being able to do the speed limit when possible.
__________________
92 Cherokee - All nude and in need of some tlc!
Max78 is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 03:00 PM   #10
ArloGuthroJeep
Mr. Hyde!
 
ArloGuthroJeep's Avatar
2004 WJ 
 
Join Date: Mar 2005
Location: Boulder, CO
Posts: 23,084
4.56

You could certainly get away with 4.10's since you have the 4.7L, but I am willing to bet you'll want a bigger tire one day and thus 4.56's would be more appropriate when the time comes.
__________________
'04 WJ, 6" Clayton LA's, 242 SYE, 35" BFG MT KM2's, 4.56 gears, & D44a locked
'14 WK2 Limited w/5.7L, ORAI, & Tow Package
ArloGuthroJeep is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 03:03 PM   #11
VanBCguy
Web Wheeler
 
VanBCguy's Avatar
1999 WJ 
 
Join Date: Jun 2009
Location: Vancouver
Posts: 1,973
Personally, I'd go 33" with 4.56 gears. It's a good gear ratio with 33's for RPM's and fuel mileage. Plus it would even allow you to grow in tire size if wanted/needed. The old credo applies: "Do it once and do it right". But that's just my

Before you make a decision, this thead has some very interesting information in it about RPM's and tire size. Particularly those from Imped.

http://www.jeepforum.com/forum/f9/be...leage-1000765/

Last edited by VanBCguy; 03-30-2010 at 03:24 PM..
VanBCguy is offline   Reply With Quote Quick reply to this message
Unread 03-30-2010, 03:53 PM   #12
Max78
Registered User
1992 XJ Cherokee 
 
Join Date: Jun 2009
Location: Tucson,AZ
Posts: 324
Thank you for that link.
__________________
92 Cherokee - All nude and in need of some tlc!
Max78 is offline   Reply With Quote Quick reply to this message
Reply

Tags
3.73 , 4.10 , 4.56 , gears , grand cherokee

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.