Car Tyre (Tayar Kereta)

All tyres must meet the size standards for rim diameter, outer diameter, section width and other paramater determined by recognized organization such as T&RA of USA or ETRTO of Europe.

Refer below photo to see the meanings of the letters and numbers in size designation written on a tyre sidewall. Understanding these numbers and letters will help you find the correct tyre for your vehicle.

1 - (175) Nominal Tyre Width (mm)

It is themnominal width in milimeters of the tyre inflated and mounted and on the rim specified in the standard.

The nominal rim width may not be identical to the actual measured width of the tyre.

2 - (70) Aspect Ratio

It is the ratio of the tyre section height to tyre width. As the aspect ratio decreases, the tyre section height (sidewaall hight) becomes smaller.

3 - (R) Radial Tyre

4 - (13) Rim Diameter (inc)

5 - (82) Load Index

It refers to the maximun load that the tyre can carry at the rated speed.

The load index is a numerical code associated with the maximum load a tyre can carry at the speed indicated by its speed symbol.

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6 - (T) Speed Symbol
It refers to the allowed maximum sustained speed that the tyre can be subjected to width the maximum indicated load.


The speed symbol indicates the maximum speed at which the tyre can carry a load corresponding to its Load Index.