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stock 20' tire size

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Jul 9, 2006 | 07:03 PM

#1

turbospeed440

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stock 20' tire size

i bought the super chip programer and was messing with the tire size function. but i forget what the stock outside tire size diameter is of a 20 in wheel. I tried to use one of the formuals online but when i put the number into the programer and use my gps my speedo is off. thanks

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Jul 9, 2006 | 07:24 PM

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kenihemi

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RE: stock 20' tire size

32.25"

I just measured mine. Stock P275/60R20.

And, funny you should mention gps. I just had mine in the truck yesterday and my speedo is spot on.

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