The offset will be shown with a code on the wheel, starting with ET followed by a 2 digit number, which should be between 45 and 35. I have 215/45-17, which keeps the speedometer reading reasonably accurate...when it says 70, i am actually going 67-68. Do you have wheels with the correct size bolt pattern? Different car brands have different sizes. For example, vw/audi wheels will not fit a bmw. The tirerack.com website has lots of information about wheel and tire fitment. |