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Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
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71T
No, regardless of tire width, at a given PSI, the contact patch is always the same # of square inches. Just a different shape. If you have a 6" wide tire or a 10" wide tire, at 35 PSI with say 700 pounds of load on the tire, you'll have 20 sq. inches in either case.
If you put 35 PSI in a tire off the car, then put the tire/wheel on the car, the PSI of the tire remains the same, the contact patch changes from say a loading of 35 pounds of the weight of the wheel/tire and 1 sq. inch of contact to 20 sq. inches with a 700 pound load.
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Hugh
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