Thread: 20's or 22's with all terrain tires
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Old 01-03-2011, 03:02 PM   #11
Mkcustums
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Location: Wilsonville Or
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Re: 20's or 22's with all terrain tires
I use this, works pretty good. It shows a 31.6 for the 305/40/22.

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