I have seen many posts about tires and sizes, and i didn't really know much about them. I did some searching on the internet and found a site that calculated and gave you the info so you could compare your origional tire size and what you want to put on aftermarket. It goes in great detail and even tells you ride height difference and how it would affect your speedometer (in a percentage). I hope this helps everyone!


http://gs.tolan-hoechst.com/tirecalc.htm

 

Here's a visual one that's nice:

http://www.rims-n-tires.com/rt_specs.jsp?postId=906

 

Here's the one i've been using for years:

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

 

I work at a Tire and Wheel shop and this is the one we use!!!

 

Here's another great tire calculator to add to that list.

 

checking at home.

 

http://www.discounttiredirect.com/di...foTireMath.jsp