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Old 11-05-2007, 04:33 PM   #3
Kojak
 
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Join Date: Dec 2004
Location: Hawthorne NJ
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If you need a quick rough number you can calculate the surface area of the tires in contact with the ground and multiply that number by the psi in each tire. I saw it on an episode of Beakman’s world once but I don’t know how accurate it is.
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