What does the writing on the side of my tyre mean?
At first glance the lettering on the side of the tyre may look complicated. It is not meant to be that way. The lettering explains the exact specification of the tyre you have. In short it tells you anything that you may need to know about your tyre.
What is a Speed Rating?
This is indicated by the speed symbol on the tyre sidewall, and represents the maximum speed that this tyre can sustain Tyre lettering explainedat full load. Consult your vehicle manufacturer to check which speed rating your vehicle requires. It is of the utmost importance that you stick to the manufacturer's guidelines. Insurance can be void if you select the incorrect tyre.
How do I know if my tyres are Trading Standards approved?
Check your tyre for an "E" Number. E.g. E4 0213760. This is an ECE type approval mark and number that shows if the tyre has been tested and passed as high quality by the European regulatory authorities. All tyres sold by Stratford Tyres carry this mark and are therefore of the highest quality.

Sidewall Marking
Explanation
205
Width of the tyre in millimetres
50
Height of the tyre sidewall as a percentage of the width. In this case 50% of 205mm. Also know as the aspect ratio.
R
Radial Construction.
15
The diameter of the tyre's inner rim in inches
91
Load Capacity of Tyre (In this case its 615kg)
V
 
Speed Symbol. Indicates the max. speed for the tyre at full load. In this case 149.1mph.
E4
ECE type approval mark, which demonstrates the tyre has been tested as high quality by the European Regulatory Authorities.