The elongated honeycombs provide high pattern stiffness for better handling on dry surfaces during low temperatures.
Compact pattern blocks maximise the contact between the tire and the road, thus shortening braking distances on ice and snow. Honeycomb sipes improve the grip on snow in curves.
Its aqua-dynamic groove structure is highly effective against aquaplaning.
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.