If you look at the side wall of your car tyres, you will find markings that provide a technical description of your tyre. We have provided a brief explanation of these markings below and further guidance can be found in the following tyre fact pages.
Tyre sizes are made up of a number of different numbers and letters. For example tyre size 195/75 R 14 92 T is made up of the following information:
|195||The tyre width in millimetres|
|75||The aspect ratio (the height of the sidewall divided by the tyre width)|
|R||Identifies the tyre construction type – in this case R is for radial|
|14||The diameter of the rim in inches|
|92||Load Index (the maximum weight loading at maximum tyre speed)|
|T||Speed Rating (letter indicating the maximum speed for which the tyre is intended)|
Tyre Age – A three digit age code on the sidewall indicating the month and year of manufacture. For example 129 means the tyre was manufactured in December 1999.
M&S – Identifies if a tyre is specifically designed for use in Mud and Snow
DOT Codes – Coding satisfying the requirements of the US Department of Transportation contain a mixture of letters and numbers such as DOT DVDE MTA 129
E-Marks – Tyres for sale in the European Community must carry an E -Mark in accordance with ECE Reg 30 – E.g. E4 027550