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Old 02-03-2010, 11:47 PM   #3
moeman
Crash and Bang Winger
 
Join Date: Oct 2007
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I've found this to be a useful tool for this sort of thing. Doesn't really tell you much if you're going from say a 205 to a 255 tire, but it'll at least give you an idea if you're going to run into wheel well issues or speedometer issues. 205 to 215 should be no problem though.

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

Last edited by moeman; 02-03-2010 at 11:49 PM.
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