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Old 10-02-2013, 11:53 PM   #2
PSJohnDoe
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The diameter isn't the only factor, tires have a spec called revolutions per mile which accounts for tread, the give of the tread, inflation, etc. Find that stat for your tire model and size, that will give you an idea. Also, keep in mind that factory allows for a few percent margine of error and that tire diameter naturally changes over its lifetime so the rev/mile is just an estimate.
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