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Old 10-19-2011, 05:27 PM
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SeattlePete SeattlePete is offline
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MDS is a factor of engine load. Besides that, the tire guy has gotta stop sniffing his glue:

275/60R20= diameter of 33" x circumference of 103.6"
275/65R20= diameter of 34.1" x circumference of 107"

About a 3% difference.

Wonder why you want to go with a shorter sidewall......in any case, you'll be fine. Find another tire store to deal with.
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