Posted by **Jason L** on Monday, February 26, 2007 at 4:27pm.

Wrong tire pressure can increase tire wear and decrease gas mileage. A manufacturer of new tires tested the tire for wear at different pressures with the below results. Tire pressure (PPI:pounds per square inch) is related to how many miles a tire lasts, (1000's of miles).

PPI Mileage thousands

30

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