Established 1955

Tyre Sidewall Markings

You will find the size of a tyre on its sidewall. Below is an explanation as to what the different numbers mean.

The markings on the image indicate that this tyre is a size – 205/55R16 91W

This list below shows what each of the letters and numbers mean:

Sidewall Markings
What It Means
205This is the width of the tyre, measured in millimeters
55This is the profile of the tyre (height of the side wall), measured as a precentage of the width
RThe tyre is made of Radial construction
16Rim diameter, measured in inches
91Load index (LI) This is the maximum load allowed at the maximum speed by the tyre manufacturer
WSpeed Index (SI) This is the maximum speed allowed for this tyre