Wildman
Read the rules
For those of you who are curious how far off your speedo is or would be with a different wheel/tire setup
http://www.paspeedo.com/calculator.htm
or
http://www.miata.net/garage/tirecalc.html
they're basically the same thing
http://www.paspeedo.com/calculator.htm
or
http://www.miata.net/garage/tirecalc.html
they're basically the same thing