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Old 02-03-2016, 06:31 PM   #3
Padgett
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Join Date: Apr 2014
Location: Orlando
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and then multiply by the aspect ratio to get the height difference: 225x75x15 vs a 205x75x15 will be 20mm x .75 = 15mm or 5/8" taller

Now if going from a 14 to a 15 then add another inch: 1.625"

Since the major concern is the change in clearance between the top of the tire and the wheel well, it is half the change in diameter: .8125" or about 7/8" less.

Does that help ?
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