Looks correct. Works like this.
Tire width times the aspect ratio divided by 25.4 (to convert to
inches) = the sidewall dimension in inches.
So.... 175 * .7 / 25.4 = 4.82 inches.
Or the sidewall height is 70% (or 80%, the number after the / in the
tire size) of the tread width.
At 10:16 PM 1/9/2008, you wrote:
>Specification Sidewall Radius Diameter Circumference Revs/Mile
>
>155/80-13 4.9in 11.4in 22.8in 71.5in 886
>175/70-13 4.8in 11.3in 22.6in 71.1in 891
Tim Collins
http://www.flickr.com/photos/12702006@N07/
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