FThis value describes the energy efficiency of the tire. It varies between A (lower fuel consumption) and O (higher fuel consumption)
CThis value refers to the efficiency with which the tire brakes on wet ground. The values vary between A (the safest tire, with braking distance in lower wet) and G (the tire less safe, with braking distance in wet upper.)
70 dB3 black waves: high rolling noise. This level exceeds the limits of future regulations but respects current legislation. 2 black waves: medium rolling noise . This level is between the future limit and 3 dB below it. 1 black wave: lower rolling noise . This level is lower by at least 3 dB to the future limit. 3dB does not look like much. However, they multiply the noise level by two.