Sorry to Threadjack... but how off is my speedometer if I'm running 205/40/17?? That's probably something I should know, haha...
This will help you out http://www.miata.net/garage/tirecalc.html
Actually, it helps correct the liberal speedometer reading. So you'll be more accurate with 205/50s than the stockers.I can vouch for the 205/50-16 looks good, and only throws the speedo off by 1%.
Actually, it helps correct the liberal speedometer reading. So you'll be more accurate with 205/50s than the stockers.