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rob8558 said:
According to the AAA Foundation for Traffic Safety, 51 percent of American drivers check their own tire pressure. Unfortunately, 48 percent of those surveyed consult their tire's sidewall to find the proper inflation pressure.

"The inflation pressure on the sidewall of the tire is the MAXIMUM operating pressure determined by the tire manufacturer," says BFGoodrich ( "It is not necessarily the correct tire inflation for your vehicle. You should ALWAYS use the inflation recommended by the vehicle manufacturer. You can find this information in your vehicle owner's manual, or posted on the inside edge of the driver's door or other door, or on the inside of the glove box door."
With my Hemi the tire pressure rating was for 17 inch tires but it had 20,s. I am just saying the number on the tire is the best to go by. I am running 40 PSI in mine and have got 18,000 miles on them and still plenty left.
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