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Old 09-24-2010, 12:53 AM   #3 (permalink)
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I was under the assumption that the contact patch was determined by the air pressure and probably somewhat affected by tire stiffness. A tire with 40 psi supporting a 400 pound load would have a static contact patch of 10 sq inches. If you ran 20psi you would have 20 sq inch contact patch. If your tires are angled and running straight then they would deflect on the inner area to maintain their contact patch.
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