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View Poll Results: Max or recommended
Max Cold PSI 3 13.04%
Factory Recommended 20 86.96%
Voters: 23. You may not vote on this poll

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Unread 06-09-2010, 03:01 AM   #1
ZJ5point2GCL
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Tire pressure, recommend? or max ?

Do you run the recommended tire pressure (what it says in the door) which i believe is 33
Or do you run the max cold pressure is says on the tire (which in my case is 44)

Please vote then explain why or what.

And i am talking about for daily driving not wheeling.

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Unread 06-09-2010, 03:12 AM   #2
CJ7-Tim
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If you run non-stock size tires you should perform the chalk line test to determine the correct tire pressure for your specific tire/wheel/vehicle combination. Mark a chalk line across the tread of the tire from sidewall to sidewall. Drive in a straight line for 50-100 feet. Examine the chalk line, if the line remains at the edges of the tire treads, you have too much air pressure and the tire tread is bulged. If the chalk line remains in the center of the tread, you have too little air pressure. Adjust the air pressure until the chalk line wears away evenly across the tire treads.

Max tire pressure (printed on the tire itself) is the line in the sand you shouldn't cross. If you are towing or carrying lots of cargo, you should increase the normal air pressure in the tires accordingly. The recommended tire pressure is just that, a recommendation for the factory original, stock size tires.
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Unread 06-09-2010, 05:34 AM   #3
ratmonkey
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Max pressure is for max load rating of the tire. Never drive on max inflated tires without a full load on them. It will shrink your contact patch and cause poor tire wear characteristics.

Stock tires should be inflated to recommended unless you just enjoy playing with chalk. Larger tires must be checked for even contact with chalk. You will need to run lower than stock pressure. The tire will tell you how much lower by the chalk test.
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Unread 06-09-2010, 12:51 PM   #4
lateralus3
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i run about 25 psi on my 33s
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Unread 06-09-2010, 01:29 PM   #5
Bl@ck06Rubi
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Chalk test, max preassure will knock the fillings out of your teeth....much too hard/harsh....
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Unread 06-09-2010, 04:15 PM   #6
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im running 32psi in my 32x11.50r15LT sport kings 3 psi lower then recommended due to the larger tire
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Unread 06-09-2010, 04:43 PM   #7
ZJ5point2GCL
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i am running a 32x11.5 on an 18, so would 30 sound good? i will do the chalk test eventually, but right now its doesn't look like it will stop raining anytime soon. once my 4inch lift is on (this weekend if my shocks get here) i can run any pressure, but right now i need all the pressure i can get so my tires don't rub the inner fender.

not that it would be affected that much in such a thirsty vehicle, but has anyone notice a fuel economy difference? with more or less pressure?
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Unread 06-09-2010, 05:54 PM   #8
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Quote:
Originally Posted by lateralus3 View Post
i run about 25 psi on my 33s
damm that seems a little to low to me, have you done the chalk test? on my 32's 33psi feels good
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Unread 06-09-2010, 05:58 PM   #9
steelstr45
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I put in 35 on stock. But of course my rims un-repairably leak so that'll be down to 30 psi on one side by the end of the week
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Unread 06-09-2010, 05:58 PM   #10
lateralus3
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no i havent done a chalk test but it seems to ride pretty good. my buddy is running 20 psi on his 33s and he has very even wear and does the 5 tire rotation
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Unread 06-09-2010, 06:04 PM   #11
Bl@ck06Rubi
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I am not positive my grand (04) Overland, I do know in my Rubicon with 315 75 R16 MT/Rs 28-30 psi is plenty to get nice even wear and about as good road manners that you can get...But those are load range "D"...probably didn't help you one bit!

Will
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Unread 06-09-2010, 07:22 PM   #12
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I run 27 psi in my 285's city and highway. If I ran them a 65psi the Jeep would drive like garbage.
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Unread 06-09-2010, 09:06 PM   #13
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About 38 or so on factory spec tires. Like a little firmer ride and better response etc. Probably helps milage a little bit too. They wear evenly. If the center goes down more than the edges I'll lower it .
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Unread 06-09-2010, 09:57 PM   #14
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Neither. The proper tire pressure depends on many things (which may have already been mentioned) including tire size, vehicle weight, & tire load range.
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Unread 06-10-2010, 07:00 AM   #15
rugermack
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32 psi, I didn't pick either choice in the poll, neither applied. The door jam tire psi is for stock tires, and max clod is for max loads. Depends on tires, size, load ect.
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