How to determine tire size

[lawheelsdirect]

You can easily determine what tires size will work on your car by using our Tire Size Calculator

 

[Nighthawk]

Cool idea, personally I would have coded the calculator to work with millimeters as well as inches.

 

[dc2GS-R]

I like this one better

 

[Ominous G2]

this one works too

http://www.miata.net/garage/tirecalc.html