Trick question, right? Everyone knows that no 2002 speedo was ever right to begin with- they all read about 10% fasr. BMW even came out with a revised speedo face at one point to restore accuracy. For what it's worth, what you need is the O.D. for a 165r13, inflated to spec. If you cannot find one elsewhere, I actually have these on my '02 S. Chamberlain '02 maven "Life is a journey...enjoy the ride"