Legislation requiring tyres fitted as replacements to carry an 'E' type approval number became effective 1st January Legislation requiring all passenger cars and their trailers to be fitted with new tyres to 'E' or 'e' type approved became effective on 1st January Tyre Name A commercial name or identity in some form. Follow owner's manual or tyre placard on vehicle. Only specially trained persons should mount tyres.
The 'E' or 'e' mark consists of an 'E' or 'e' followed by a number included in a circle of 12mm diameter or a rectangle. This symbol is followed by a further number. The 'E' certifies that the tyre complies with the dimensional, performance and marking requirements of ECE Regulation The number associated the with the letter 'E' in the circle or 'e' in the rectangle is the code number of the government which granted the type approval No.
Directional Pattern Tyres Tyres with directional or asymmetric patterns should always be fitted such that they rotate in the correct direction as indicated by an arrow marked on the tyre sidewall.
Failure to observe this is classified as a reason for refusal to issue an MOT test certificate. This string of numbers indicates the sizes and dimensions of the tyre. It is taken from sidewall to sidewall and so gives the accurate cross-section of the width. It is a percentage of the nominal section width. R - The 'R' in this construction indicates radial tyre construction, almost every new tyre built today is a radial tyre. Each manufacturer has a range of tread patterns unique to their brand.
You can find the name of the tread pattern on the sidewall and often the range that the tyre has come from too. The letters TWI highlight the location of the tyre's tread wear indicators. The indicator is set at 1. It is important that you check these indicators regularly to ensure that the tread is sufficiently deep. What is a summer Tread Wear Indicator? What is a winter Tread Wear Indicator? Technical Customer Service. Related Topics. Download Documents. Dealer Locator. All tyre manufacturers have a range of tread patterns unique to their brand.
The name given to the pattern of your tyre will be printed on the sidewall and often the range that your tyre has come from. This can be useful if you needed to replace your tyre and wanted to find a similar or identical tyre to replace it with.
This figure indicates the maximum pressure that the tyre can withstand. You must not confuse this with the recommended inflation pressure suitable for every day driving. For more information on finding this figure, take a look at our advice about tyre pressure. The size of the tyre is clearly printed along the tyre sidewall as a string of numbers. This indicates the sizes and dimensions of the tyre.
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