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Tyre size explanation

What do the numbers mean?

The sidewall of every tyre contains numbers to detail the specification, here’s what they all mean and how to read them:

205 – Width of the tyre in millimetres
55 – Height of the tyre sidewall as a percentage of the width. In this case 55%. Also known as the aspect ratio.
R16 – The diameter of the tyre’s inner rim in inches
91 – Load Rating of the Tyre.
– Speed Rating. Indicates the maximum speed for the tyre when at full load.

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