The energy lost when a tyre is in motion is known as 'rolling resistance'. This 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 up to 6 litres of 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 each grade is roughly 3m - an average car length. This makes average stopping distance between an A and G rated tyre 18m. That's 4 car lengths.
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. To achieve the best grade, a tyre’s noise level must be at least 3dB under the legal limit set by the EU.
Changes to EU Tyre Labelling
Tyre labelling changes will be taking place from the 1st May 2021 in Europe, including in Northern Ireland. To find out more about these changes, click here.
- The double-concave shaped grooves and increased groove volume in the tread centre promotes smooth water flow through the grooves and improves water dispersion.
- Directional sipes in the tyre shoulders and tread centre provides improved support when braking, resulting in shorter stopping distances in both the wet and dry.
- There are three indicators on both the inner and outer shoulder. Incorrect track alignment and/or camber settings are identified if the indicator grooves on both shoulders are unevenly worn. Poor wheel alignment can be identified and rectified early, thus achieving a higher mileage through avoiding uneven wear.