Rolling resistance has a direct impact on fuel consumption. A tyre's rolling resistance score ranges from A to G. Over the life of the tyre, fitting an A rated tyre could save you fuel - when compared to a G rated tyre.
A tyre's wet grip capacity is expressed in Grades from A to G. The difference in braking distances between A and F can be up to 30% shorter. For a typical truck travelling at 50mph, the braking distance could be up to 25m shorter on an A rated tyre, compared to an F rated tyre.
The exterior noise grade of a tyre is expressed in decibels - accompanied by one, two or three sound waves, with one wave being the best noise level performance. The quieter the tyre, the more environmentally friendly it is.