Originally Posted by FX42008
I went from the 255/70/16 piece of crap Goodyear R/TS to a 265/75/16 Goodyear duratracs. My MPG took a huge crap just goin up one size. Has anybody else had this problem? Would buying a Superchip flashpaq programmer and setting the tire size on there and to the economy setting help with MPG?
when you calculate your MPG are your adjusting for the new tire size? i haven't noticed much difference in MPG and i have duratrac 265/75R16 load range Cs. i haven't actually calculated mileage but the trip seems to be up on average. winter mileage sucks anyways, idling every morning and such...
what gearing do you have?
i also have a programmer, but i doubt that makes any difference.
so far i really like the duratracs.