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- Jeep Grand Cherokee ZJ 1993 to 1998 Tires General Information and Specs
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All Lift & Tire questions go here!!!
Member
Join Date: Aug 2021
Posts: 156
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31 Posts
Model: Cherokee (XJ)
Engine: 4.0
I was going to start a new post but decided to start here. Tire pressures (not offroad) are totally misunderstood and go to any forum and finding any accurate information is an excercise in frustration. So I hope this simple reply will help a few of you determine your proper tire inflation based on your XJ's door inflation pressure lable if you decide to upgrade/downgradeto a different tire size which 95% of you will do. Before I start the numbers you'll find that what I'm listing are from an online calculator which just so happens to be correct. You can choose to call BS and do your own thing, but the facts are the facts.
Here we go.
My stock 96 tire size listed to the door was P215/70-15 with tire inflation listed as 33 PSI front and rear measured COLD.
Popular tire sizes and adjusted tire pressures for you XJ:
LT30X9.50. 31PSI
LT31X10.50. 26PSI
LT32X11.50. 25PSI
LT 33 AND LARGER ARE ALL 25PSI
Some run this 16 inch (approx 30 inch):
P235/75R16 tire pressure is 26PSI. This is a load range LT, not to be confused with a regular LT or LT metric with load range C,D E, etc.
Finally, LT Metric with load range C, D, and E:
The minimum tire pressure for all of these tires is 35 PSI even though the load they can carry is much higher than any XJ will need. Reason for this is based on the minimum inflation to prevent overheating will driving.
You can check calculations here https://tiresize.com/pressure-calculator/
Here we go.
My stock 96 tire size listed to the door was P215/70-15 with tire inflation listed as 33 PSI front and rear measured COLD.
Popular tire sizes and adjusted tire pressures for you XJ:
LT30X9.50. 31PSI
LT31X10.50. 26PSI
LT32X11.50. 25PSI
LT 33 AND LARGER ARE ALL 25PSI
Some run this 16 inch (approx 30 inch):
P235/75R16 tire pressure is 26PSI. This is a load range LT, not to be confused with a regular LT or LT metric with load range C,D E, etc.
Finally, LT Metric with load range C, D, and E:
The minimum tire pressure for all of these tires is 35 PSI even though the load they can carry is much higher than any XJ will need. Reason for this is based on the minimum inflation to prevent overheating will driving.
You can check calculations here https://tiresize.com/pressure-calculator/
Junior Member
Say What
You state all your recommended tire pressures are under 35. Then you say "The minimum tire pressure for all of these tires is 35 PSI " you lost me. Can you clarify? Also does the weight you carry, bumpers, winch, lift cargo play into recommended pressure? I agree with you I have found recommendations to be all over the board.
Newbie
Join Date: Sep 2021
Location: Alabama
Posts: 2
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1 Post
Year: 1996
Model: Cherokee (XJ)
Engine: 4.0
Here is my setup. Its a Rustys 4.5 lift with Rustys 4-Link Longarm kit, fenders trimmed. I am currently running 33x12.50x15 tires that do not rub or hit at full flex with as much as 35 PSI. I would like to run 35x12.50x15 bead locks with 5-7PSI. for off road use only. Would trailer to riding parks and then use the 33s for on road use.
Would the 35s most likely clear fenders when running that low of PSI? In my mind I am thinking this should work but need some others vies, opinions and knowledge.
Thanks guys.
am I missing anything important?
I'm lifting my stock 2001 XJ with a 231 and a Dana 35 rear axle. It will be a daily driver, hoping to travel 75mph safely and comfortably if possible (not too worried about mpg). Will be used off-road as well. I just took a screenshot of my shopping cart at rusty's offroad, and I was hoping that any of you could tell me if I'm missing anything important, or if I need to pick something else up somewhere else. My budget isn't limitless, but I can throw some cash around if I need to. I'm planning on 33s so gear ratio or driveshaft input would be nice as well. I'm trying to tighten everything up and improve the ride, but if the bushing upgrades are pointless let me know. I haven't asked anyone else this question, but will my stock brakes work well, or should I improve them? Any other advice would be appreciated as well. Thanks in advance
Member
Join Date: Aug 2021
Posts: 156
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Received 57 Likes
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31 Posts
Model: Cherokee (XJ)
Engine: 4.0
You state all your recommended tire pressures are under 35. Then you say "The minimum tire pressure for all of these tires is 35 PSI " you lost me. Can you clarify? Also does the weight you carry, bumpers, winch, lift cargo play into recommended pressure? I agree with you I have found recommendations to be all over the board.
Seasoned Member
Long Arms = BETTER geometry
Newbie
Join Date: Nov 2021
Location: NW Ontario
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1 Post
Year: 1992
Model: Cherokee (XJ)
Engine: 4L
Hi, first time post on this forum.
I just purchased a really nice stock 92 XJ sport and would like to do a mild lift of 2" max, but I'd also like to level the rear with the front. Measuring from wheel center to the bottom edge of the fender flares I get 19.5" up front and 18" in the back. I read elsewhere on the forum here that 17.5" front and 17" rear is typical for stock, but I see no signs that the suspension has been modified from stock - except for the shocks. Is it typical for there to be some variability in stock ride height?
Currently my XJ is sitting on 235/75R15s with no rubbing, but I haven't tested at max compression. I'd like to fit either 30x9.5R15s or maybe 215/85R16s.
Cheers!
I just purchased a really nice stock 92 XJ sport and would like to do a mild lift of 2" max, but I'd also like to level the rear with the front. Measuring from wheel center to the bottom edge of the fender flares I get 19.5" up front and 18" in the back. I read elsewhere on the forum here that 17.5" front and 17" rear is typical for stock, but I see no signs that the suspension has been modified from stock - except for the shocks. Is it typical for there to be some variability in stock ride height?
Currently my XJ is sitting on 235/75R15s with no rubbing, but I haven't tested at max compression. I'd like to fit either 30x9.5R15s or maybe 215/85R16s.
Cheers!
The following users liked this post:
anybody (07-11-2022)
Seasoned Member
Hi, first time post on this forum.
I just purchased a really nice stock 92 XJ sport and would like to do a mild lift of 2" max, but I'd also like to level the rear with the front. Measuring from wheel center to the bottom edge of the fender flares I get 19.5" up front and 18" in the back. I read elsewhere on the forum here that 17.5" front and 17" rear is typical for stock, but I see no signs that the suspension has been modified from stock - except for the shocks. Is it typical for there to be some variability in stock ride height?
Currently my XJ is sitting on 235/75R15s with no rubbing, but I haven't tested at max compression. I'd like to fit either 30x9.5R15s or maybe 215/85R16s.
Cheers!
I just purchased a really nice stock 92 XJ sport and would like to do a mild lift of 2" max, but I'd also like to level the rear with the front. Measuring from wheel center to the bottom edge of the fender flares I get 19.5" up front and 18" in the back. I read elsewhere on the forum here that 17.5" front and 17" rear is typical for stock, but I see no signs that the suspension has been modified from stock - except for the shocks. Is it typical for there to be some variability in stock ride height?
Currently my XJ is sitting on 235/75R15s with no rubbing, but I haven't tested at max compression. I'd like to fit either 30x9.5R15s or maybe 215/85R16s.
Cheers!
Member
Here is my setup. Its a Rustys 4.5 lift with Rustys 4-Link Longarm kit, fenders trimmed. I am currently running 33x12.50x15 tires that do not rub or hit at full flex with as much as 35 PSI. I would like to run 35x12.50x15 bead locks with 5-7PSI. for off road use only. Would trailer to riding parks and then use the 33s for on road use.
Would the 35s most likely clear fenders when running that low of PSI? In my mind I am thinking this should work but need some others vies, opinions and knowledge.
Thanks guys.
Seasoned Member
Join Date: Jan 2018
Location: GA
Posts: 341
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86 Posts
Year: 1999 classic
Model: Cherokee (XJ)
Engine: Golen 4.6
4.5” with cut fenders ( or cut out flares) will work if bump stopped properly. Looks like he’s on 15x8” rims.
Take your time. Research is your friend.
Take your time. Research is your friend.
The following 2 users liked this post by Sirsyc0:
JuilleratC_00XJ (11-16-2021),
XJChang (11-10-2021)
Junior Member
Ok guys so I finally finished the lift and tires.
I did a 2” spacer up front with 2” extended shackles in the back and 30.5 tires on 16” wheels.
the thing I’m running into now is the passenger front tire when I turn the wheel all the way to the right it rubs slightly on the lower control arm. It does not occur on the driver side and it doesn’t rub at all when turned left.
any suggestions on how to resolve this?
I did a 2” spacer up front with 2” extended shackles in the back and 30.5 tires on 16” wheels.
the thing I’m running into now is the passenger front tire when I turn the wheel all the way to the right it rubs slightly on the lower control arm. It does not occur on the driver side and it doesn’t rub at all when turned left.
any suggestions on how to resolve this?
Seasoned Member
Join Date: Jan 2018
Location: GA
Posts: 341
Received 103 Likes
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86 Posts
Year: 1999 classic
Model: Cherokee (XJ)
Engine: Golen 4.6
The Trac bar pulled your axle to the drivers side with the lift. Maybe enough to cause that. Did you drill a new hole on your axle side trac bar mount? Did you center the steering wheel after the lift?
Last edited by Sirsyc0; 11-19-2021 at 11:00 PM.