What do tyre size numbers mean?

These tyre size numbers tell you many important pieces of information: tyre width, aspect ratio, construction, inside diameter of the tyre, load capacity, and speed rating. Imagine that your tyre’s sequence of numbers says. With a little explanation, it’s easy to understand what all of the letters and numbers mean on your tire’s sidewall. The numbers are indicators of the size, type, and performance of the tire.

Is the ratio of the height of the tire’s cross-section to its width. The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.