you can go into speedo and correct revs per mile, its simple. not sure on your year but the new ones, if you go over 34.5" tire calcs you will set off the abs and brake lights. take original size of tire/by new size and X that by your original revs per mile and that is what you will put in the revs per mile slot. mine was i think 30"/34.5"x679=590:beer: