acb92sc said:THATS AS CLOSE AS YOU CAN GET TO THE FACTORY TIRE HEIGHT, SO UNLESS YOU ARE RUNNING SOME CRAZY OFFSET/BACKSPACING, YOU SHOULD BE FINE WITH IT LOWERED. THATS WHAT I HAVE ON MY RIMS NOW, AND AM IN THE PROCESS OF LOWERING IT, SO IF IT DOESNT FIT, IM SCREWED!
Tire Size Comparison
Specification--Sidewall--Radius--Diameter--Circumference--Revs/Mile--Difference
225/60-16------5.3in---13.3in----26.6in-------83.7in--------757-------0.0%
255/50-17------5.0in---13.5in----27.0in-------84.9in--------746-------1.5%
http://www.miata.net/garage/tirecalc.html
68COUGAR