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 appropriate aspect ratio for my vehicle important?

Selecting the appropriate aspect ratio for your vehicle, in accordance with the manufacturer's guidelines, is crucial. Opting for an incorrect ratio may impact the precision of your speedometer and odometer, along with your vehicle's handling and overall performance.