Tyre labelling: Wet grip

The right-hand side of the label shows the tyre's performance when braking on a wet surface. The measurements are taken on vehicles in conditions defined by European regulations (speed, road characteristics, water depth, temperature, etc.).

The grade is established by comparing the performance of the tested tyre with a reference tyre.

What is the difference between an A tyre and an F tyre? (For this safety performance, tyres given a G grade are not authorised for sale)

The difference in braking distance between a vehicle fitted with category A tyres and a vehicle fitted with category F tyres is over 18 metres.