Recalibrating speedometer?
#2
Senior Moderator
what tire sizes are you using?
#4
The dealer I bought the car a few years ago from had on 23/55r17 so the speed was off by 1mph and I got new Michelin Pilot Sports AS3+ the other day. They only had 245/45r17 so that's what I went with. A little shorter than the 50 from OEM spec