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Old 01-17-2013, 05:29 PM
75gmck25 75gmck25 is offline
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The other tire size confusion that I hear from many folks is that they believe a bigger wheel size automatically means a bigger tire diameter. That is because they don't understand that you also have to look at the aspect ratio and section width. For example, I have 245/16" tires on my truck and they are about 31" in diameter because they are 75 aspect ratio. However, the 235/17" tires on my Mustang are only about 27" in diameter because they are a 235 section width and 55 aspect ratio.

Bruce
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