The left-hand part of the label shows the contribution made by the tyre to fuel consumption and CO2 emissions.
Tyres, mainly due to their rolling resistance, account for around 20% of vehicles' fuel consumption. A reduction in rolling resistance can therefore make a considerable contribution to the energy efficiency of road transport, and thus to reducing CO2 emissions. It is rolling resistance, measured on a simulator, that determines the grade of the tyre.
What is the difference between an A tyre and a G tyre?
The difference in Rolling Resistance is considerable and represents a technological evolution of several tyre generations.
On a car, the difference in impact on fuel consumption between an A tyre and a G tyre is very large, on the order of 0.5 litres/100km.
This amounts to around 80 litres of fuel per year (assuming 15,000km/year).
Over €100/year for a petrol vehicle (at a pump price of €1.30/l.)
The economic impact on the consumer is very considerable, and so is the environmental impact, as this difference in consumption corresponds to 12g of CO2 emissions per km.