http://www.e90post.com/forums/showthread.php?t=129914

I was doing some searching through Google and came across the thread linked to above.

I've seen this calculator before on team-integra.net but really didn't think anything of it, but running across it again thought it'd be cool to have in the wheels/tires sections of forums.

Of course the wheels/tires forum on that thread is sponsored by TireRack, which would also be cool to have on the forum if it means discounts.

 

Here's a couple you may have seen before:

Tires:
http://www.1010tires.com/tiresizecalculator.asp

Wheels:
http://www.1010tires.com/WheelOffsetCalculator.asp

 

here's another one that i used and was right on.

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

 

I always liked this one.

LINK

 

cool. I always just used the Miata one but I'll give the others a shot...