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The profile or aspect ratio pertains to the proportion of the sidewall height relative to the section width of a tyre, represented in percentage. For instance, a ratio of 55 signifies that the height is 55% of the tyre's width. A higher aspect ratio results in a larger sidewall.
Why is selecting the right aspect ratio important?
Selecting the appropriate aspect ratio for your vehicle, in accordance with the manufacturer's guidelines, is very important. If you select an incorrect ratio that is not recommended, you will likely find the precision of your speedometer and odometer is off. Along with your vehicle's handling and overall performance.