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miata tire calculator Posted by Snowmobile [Email] (#686) [Profile/Gallery] (more from Snowmobile) on Fri, 16 Nov 2012 09:48:29 In Reply to: Will 205/55/r17 tires fit?, Saabsince81, Fri, 16 Nov 2012 08:54:12 Members do not see ads below this line. - Help Keep This Site Online - Signup |
See link below for miata tire calculator. but wrt your question, I'm not sure what the actual size you are looking at is, but:
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
225/45-17 4.0in 12.5in 25.0in 78.5in 808 0.0%
205/55-17 4.4in 12.9in 25.9in 81.3in 779 3.6%
215/55-17 4.7in 13.2in 26.3in 82.7in 767 5.4%
Imho, these tires are pretty far off the stock size. I would be inclined to stick with 225/45R17 or perhaps narrow to 205/50R17 if you can find them with the right load rating. They are only 0.4% larger diameter than stock (0.1", so negligible).
Even better would be to go to 16" rims and 205/55R16 tires (0.4% smaller).
good luck.
->Posting last edited on Fri, 16 Nov 2012 09:49:09.
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