redwngr's post in adjusting gas mileage for bigger tire/wheel combo was marked as the answer
Gas mileage error will be the same ratio as the speedo/odo error.
eg actual speed 70, speedo speed 65, ratio =70/65 =1.077
Actual mileage will be 1.077 times computer mileage. (or 7.7% better)
Who's Online 26 Members, 1 Anonymous, 1,145 Guests (See full list)