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Car Glossary
›› Aspect Ratio Definition - Tire and Wheel Glossary
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Definition
Aspect Ratio
The aspect ratio of a tire is a form of measurement for the sidewall. It is the height of a tire, measured from the bead to the edge of the tread, in relation to the section width. It is typically listed as the middle number in the tire size. For example, a tire with a size of P205/50R16 has a section width of 205 millimeters and the sidewall height is 50% of the section width. This is the aspect ratio.
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