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#24: 06-19-2004, 09:05 PM
 
 SUBE555
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Title: Test Driver
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Nearly all tire manufacturers list tires in diameter. That is the numbers I am using. Radius is different pending tire pressure, where you measure, and other factors. So I'm using an industry standard. There is a given distance of tread on the tire and one rotation it covers that distance. Plain and simple.