Use this diagram to see how a tyre performs on fuel consumption. Fuel-efficiency is graded from A (most efficient) to G (least efficient).
This chart grades a tyre on how well it brakes in wet conditions. Performance scales from A (the safest, stopping in the shortest distances) down to G (least safe, with longest braking distances).
3 black waves = Noisier tyre. Level greater than the future limit but complies with today´s noise regulation
2 black waves = Average tyre. Noise level equal to or below future limit by up to 3 dB (A)
1 black wave = Low noise tyre. Noise level 3 dB (A) or more below future noise limit
3dB doesn´t sound much but it is actually double the noise level!