Tips and advice about tyre labelling - Tyre labelling: The three performance criteria

Tyre labelling: The three performance criteria

Tyre labelling instructions Connor

The new label provides the consumer with information on three basic tyre performances: Fuel efficiency, wet grip and the level of external rolling noise. Each performance is associated with a class represented by a letter and a colour.

The three labelling performance criteria The three chosen criteria to evaluate the tyre performances - Copyright © : Rezulteo

Fuel efficiency

Tyres are responsible for approximately 20% of a vehicle’s total fuel consumption. As a tyre rolls along the road its shape is deformed and energy is lost as heat. This phenomenon creates a force known as the rolling resistance (RR). A higher rolling resistance increases the engine's fuel consumption. A low rolling resistance is therefore an important criterion for reducing fuel consumption, and subsequently, CO2 emissions.


Tyre labeliing fuel symbolCopyright © : All Rights Reserved

The label indicates the tyre’s rolling resistance class. The classes range from A (lowest rolling resistance) to G (highest rolling resistance).


Wet grip efficiency

tyre labelling wet grip symbolCopyright © : All Rights Reserved
A tyre’s ability to hold the road in wet conditions is extremely important when it comes to driver and passenger safety. To measure wet grip, the European regulation has outlined a protocol which, in particular, specifies the conditions under which tests should be conducted: Initial speed, track characteristics, water depth, temperature…

The class is assigned by comparing test results with those obtained for a reference tyre. The classes range from A (the best) to G (the worst).


Level of external rolling noise

tyre rolling noise symbolCopyright © : All Rights Reserved
The noise caused by the tyre rolling along the road is part of the quality of life criteria. It forms an important part of the total amount of noise generated by the vehicle. It is even the most important above 35 mph. Reducing the external rolling noise therefore contributes to the efforts to reduce noise pollution.

The measured test result is compared with a maximum value stipulated in the Regulation. Rolling noise has three classes, represented by one (best class), two or three sound waves.

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