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Old 01-13-2012, 09:12 PM   #9
WildBillyT
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Quote:
Originally Posted by Jloshotz View Post
Thanks guys, looks like 275's it is. Following that pattern, "40" is 40mm for sidewall height?
I believe the aspect ratio is a percentage.

275 = 275mm wide
40 = 40% of 275mm is the height of the tire
17 = rim size
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