The implications of new EU legislation on tyre labelling for commercial tyre end users were detailed at a press briefing hosted by Continental Tyres in London recently.
From 01 November 2012, it becomes a legal requirement to provide all end users with information on the fuel efficiency, wet grip and external noise classification of tyres.
The legislation has been brought in by the EU as part of a number of measures to reduce noise pollution and improve energy efficiency to help cut 20 per cent of Europe’s energy consumption by 2020.
Tyres play an important part in this programme because of their potential to reduce fuel consumption.
Tyres account for between 20 and 40 per cent of the fuel consumption of commercial vehicles, mainly due to rolling resistance. Reductions make a substantial contribution to energy efficiency, directly affecting a company’s profitability and lessening harmful emissions.
The rolling resistance coefficient used as a basis for the EU tyre label is calculated using the relationship between the rolling resistance and loading of the tyre in kilograms per tonne (CR in kg/t). The smaller this coefficient, the lower the rolling resistance of the tyre will be and fuel consumption is therefore reduced.
The rolling resistance of commercial vehicle tyres varies depending on a number of criteria; their size, their position on the axles and their usage (e.g. regional, long-distance or construction).
Tyres with smaller diameters for light or medium-sized trucks, for example, may have higher rolling resistance coefficients than heavy truck tyres which require less energy to rotate in relation to a higher load.
Trailer tyres and drive tyres of exactly the same size will also have different rolling resistances as they have been uniquely designed for their specific jobs.
Check out the full article in the Tyre Trade Journal out next week.