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Old 03-03-2010, 09:09 AM   #21
thebarber
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Drives: the #wrecho
Join Date: Jun 2006
Location: Grand Rapids, MI
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Quote:
Originally Posted by sbergman27 View Post
The taller sidewall offsets the smaller wheel size by 20%. But my point is really that, overall, there is not much difference between the two configurations. The 15 is 3.4% higher diameter. The 14 is 4.9% narrower.
1010tires.com suggests no more than 3% difference when buying new tires

that said, i ran 205-55-15 all last summer vs my 175-65-14 stock stuff and i personally think the speedometer was more accurate.

@ 120kph, 3.4% can be the difference between getting pulled over or not getting pulled over...
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