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Correcting spedometer for tire size
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Mon, January 3rd, 2011, 03:58 PM
Longshot270
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Join Date: Jul 2009
Location: DFW, TX
Posts: 1,878
If it is just for your personal use then you can adapt a little formula for finding the correct tire size on the programmers. You take the GPS mileage and divide that by the odometer mileage (resulting in a number around 1.08). Multiply that number back to your odometer to find the true number of miles you've driven in that time frame...or does this also sound funky?
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