The asymmetric tread design provides optimal ground contact and therefore shortens the braking distances on wet and dry surfaces.
The flexible silica compound allows a strong connection between tire and surface so that a high degree of traction can be guaranteed on wet and dry surfaces. Grip edges and incisions in the outside tire shoulder provide additional traction, especially in wet curves.
A bionic contour minimises tread pattern deformation when the tire is rolling, therefore lowering fuel consumption and giving the tire a longer service life.
Secure grip in wet conditions is crucial for safe driving. Performance is graded into classes, A to G (although D and G are not currently used). The stopping distance between a class A tire and a class F tire can be as much as 18 metres.
Reduced rolling resistance saves fuel and cuts CO2 emissions. Class A tires deliver the best fuel efficiency, with each subsequent class through to G increasing fuel consumption by between 0.42 and 0.56 mpg for a car which does 36 mpg.
This is the external noise made by the tire and is measured in decibels. The more filled bars shown on the label, the louder the tires.