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How to find out my tyre size

Are you looking for your tyre size? Knowing your tyre size can help when you're purchasing new tyres, but it's also great to know what you have on your car and what it all means. Our experienced fitters at Tyrepower O'Connor can walk you though it if you would like to drop past our store, or you can also read it yourself. Tyres have a code system moulded into their sidewall which allows you to understand their technical capabilities. This code provides information on tyre size, construction (e.g. radial), its load-carrying capacity and its speed rating.

For example, the code on a common fitment for Australian cars is:

205/65R15 95H

205 indicates the nominal section width of the tyre in millimetres (205mm).

65 indicates its aspect ratio, a comparison of the tyre's section height with its section width (65 indicates the height is 65% of its width).

R indicates radial ply construction.

15 indicates the nominal diameter of the wheel rim (15 inches).

95H is a symbol indicating the maximum load capacity and speed at which the tyre can be safely operated, subject to the tyre being in sound condition, correctly fitted, and with recommended inflation pressures (92 represents a maximum load of 690kg per tyre; H represents a maximum speed of 210km/h).

Tyre Size Guide

The bulk of this article first appeared on Tyrepower.com.au