New EU legislation came into force in November 2012, whereby all tyres sold must be clearly labelled to advise the consumer on fuel efficiency, wet grip road holding, and exterior noise levels. Every tyre sold now will have one of these labels – if not the tyre is old stock.
For fuel & wet grip, ‘A’ is the best performing and with exterior noise levels, if you want the tyre as quiet as possible, the lowest decibel (dB) number is required.