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From November 1, 2012, applicable EU regulation on labeling of tires. The label provides information on fuel efficiency, wet grip and external rolling noise with clear pictograms. The label will allow consumers to make informed choices when buying tires, ranked on a scale from A (best) to G (poor).
Rolling resistance is the main determinant for measuring the energy efficiency of the tire and has a direct effect on the fuel consumption of the vehicle. A series of green tire class "A" in relation to a class «G» can reduce fuel consumption by 7.5% of the passenger car; even more for trucks.
Scoring «D» is not used in rolling resistance classification for passenger cars and light trucks, and used for heavy trucks.
Basis for wet grip is the absolute stopping distance when driving 80km per hour. Between each class, there are 3-6 metres difference in braking distance. Classes "D" and "G" are not used.
External Rolling Noice
A tyre`s exterior noise grading is expressed in decibels, accompanied by one, two or three sound waves. One black wave indicates the best noise level performance. It means that the noise level of the tyre is at least 3dB below the future legal limit.
Three black waves indicate the weakest performance in terms of tyre noise output. It represents a noise output level between the current maximum and the new lower limit that will be introduced in Regulation 661, between 2012 and 2016.