Fuel Efficiency
Rolling resistance has a direct impact on fuel consumption. A tyre's rolling resistance score ranges from A to E. Over the life of the tyre, fitting an A rated tyre could save you up to 6 litres more fuel every 625 miles - when compared to a E rated tyre.
Wet Grip
A tyre's wet grip capacity is expressed in Grades from A to E. The difference in braking distances between each grade is roughly 3m - an average car length. This makes average stopping distance between an A and E rated tyre 18m. That's 4 car lengths.
Noise Levels
The exterior noise grade of a tyre is expressed in decibels - accompanied by a grade ranging from A to C, with A being the best noise level performance.