Quote:
Originally Posted by teksupportdude
you said your tires are new...did you get over sized? 1 step up can adjust your speedo upto 10 percent, so 40 on your speedo would be 44, and 45 would be almost 50.
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FWIW, my 33's are dead on synch with the GPS speed. 35's might be a little off but I wouldn't guess by more than a couple MPH at 65.