What did you do to your Cherokee today?
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Joined: Feb 2011
Posts: 14,479
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From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
Agreed.
It's going to depend on load (items in car, passengers, are you towing or hauling anything heavy?), check the placard on your Jeep and see what the manufacturer recommends and adjust as necessary (do the chalk test)
Very true on the max pressure. I just dont have info on how far under I can run them without causing wear problems. 30% under max seems very low to me but they are the experts. Given that there is no mileage warranty I would rather ask than assume. I have seen charts for larger truck tires on how much pressure to run for a given weight carrying capacity. Does anyone know if there is something similar for LT's?
Hapdad
Hapdad
Senior Member
Joined: Feb 2012
Posts: 632
Likes: 168
From: Colorado Springs
Year: 1989
Model: Cherokee
Engine: I6 4.0
Exactly! Most jeeps are 33psi recommended. Obviously with load, change as necessary. The chalk test is the best way to go otherwise IMO.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Went to Tire Rack and got some new rubber. General Grabber AT2's to be exact. Cant say much about the tires yet as they only have about 50 miles on them. But Tire Rack was good. Had a 10am appointment and was in and out in about an hour. The only thing I am not sure of is that they told me that they aired up to 35psi and the Grabbers are LT's so the side wall says 50psi max. I wonder if 35 is under inflated enough to cause wear problems. I will call them tomorrow and ask.
Hapdad
I have jeep parts on the way! ARB headlamp housings! and Amico ceramic headlamp sockets, and Hella 100/55 bulbs!!! I will see the light! woo hooo I do plan to run the 100w side through a relay so as not to overload/heat the stock wire harness and or switch
Hapdad
I have jeep parts on the way! ARB headlamp housings! and Amico ceramic headlamp sockets, and Hella 100/55 bulbs!!! I will see the light! woo hooo I do plan to run the 100w side through a relay so as not to overload/heat the stock wire harness and or switch
Junior Member
Joined: Jun 2013
Posts: 83
Likes: 1
From: Michiana
Year: 2001
Model: Cherokee
Engine: 4.0
Ok read up and found out what a chalk test is. Seems to be the way to go as the tires are not stock. They are LT 235/75/15. The pressure on the sticker is for p215 or p225 car tires.
I chose the 235's due to the fact that this is still a daily driver and has no lift. I will pick up a larger set off crags list when I manage a lift. Then I will have dd tires and play tires. No loss of fuel mileage or off road ability.
Hapdad
I chose the 235's due to the fact that this is still a daily driver and has no lift. I will pick up a larger set off crags list when I manage a lift. Then I will have dd tires and play tires. No loss of fuel mileage or off road ability.
Hapdad
CF Veteran
Joined: May 2012
Posts: 3,004
Likes: 1
From: Wilmington,NC
Year: 1989
Model: Cherokee
Engine: 4.0
Went to Tire Rack and got some new rubber. General Grabber AT2's to be exact. Cant say much about the tires yet as they only have about 50 miles on them. But Tire Rack was good. Had a 10am appointment and was in and out in about an hour. The only thing I am not sure of is that they told me that they aired up to 35psi and the Grabbers are LT's so the side wall says 50psi max. I wonder if 35 is under inflated enough to cause wear problems. I will call them tomorrow and ask.
Hapdad
I have jeep parts on the way! ARB headlamp housings! and Amico ceramic headlamp sockets, and Hella 100/55 bulbs!!! I will see the light! woo hooo I do plan to run the 100w side through a relay so as not to overload/heat the stock wire harness and or switch
Hapdad
I have jeep parts on the way! ARB headlamp housings! and Amico ceramic headlamp sockets, and Hella 100/55 bulbs!!! I will see the light! woo hooo I do plan to run the 100w side through a relay so as not to overload/heat the stock wire harness and or switch
::CF Administrator::
Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
Just to let you know, Toyo tires has charts that show load and inflation tables, good to know as they are not just for their tires, but a good general cross-reference tool. Only tire manufacturer that does this, to my knowledge.
http://toyotires.com/tires-101/load-...flation-tables
http://toyotires.com/tires-101/load-...flation-tables
Last edited by Rogue4x4; Dec 26, 2013 at 04:54 PM.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
And that's why i asked what size. The larger the tire he less air. However if you carry alot of gear and like 200lbs of crap on a daily basis, chalk test it
CF Veteran
Joined: Jun 2011
Posts: 1,492
Likes: 0
From: KY
Year: 2000
Model: Cherokee
Engine: 4.0 L6
What is it with everybody asking bout air psi just put f**king air in ur tire average is round 32psi and as for the chalk test wtf iv never done this and iv never had a problem with tire wear IMO I thank people are buying jeeps that dont need to be.
Last edited by 2KXJJEEP; Dec 26, 2013 at 05:23 PM.
::CF Administrator::
Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
CF Veteran
Joined: Aug 2010
Posts: 1,085
Likes: 3
From: Fountain Inn, SC
Year: 1988
Model: Comanche (MJ)
Engine: I6 4.0L
