One of the forces influencing the fuel efficiency of a motorised vehicle is the Rolling Resistance of the tires. Choosing tires with a high fuel efficiency rating will give you more miles from your tank and fewer CO2 emissions.
This phenomenon exists because a tire deforms when rotating, resulting in energy losses in the form of heat. The higher the deformation, the higher the tire rolling resistance, and consequently the more fuel required to move the vehicle forward. In other words, lower rolling resistance means lower fuel consumption and therefore lower vehicle emissions, including CO².
The new label will display different grades in “rolling resistance” where A is the most “fuel efficient” and G the worst in class. The black arrow (in this case B) next to the grading indicates the performance level of the product. Rating D is not used for passenger cars. Any tire which does not meet the standard for C grade is categorised as E grade.
The difference between an A rating and a G rating could mean a reduction in fuel consumption of up to 7.5%. To put this in real terms, choosing A-rated tires instead of G-rated tires could save you more than 6 litres of fuel every 1000 kilometres.**
**When measured according to the test methods set out in Regulation EC 1222/2009. Braking distances may vary according to driving conditions and other influencing factors.
Label values shown are for illustrative purposes only. Values for a certain tire line/size may vary.