Typically 80% of the whole-life CO2 emissions of a car tyre arise from its use. This is why choosing low rolling resistance tyres and keeping them correctly inflated are so important.
Surveys have repeatedly shown that 25% of vehicles have at least one tyre 25% under-inflated. This leads to increased fuel consumption, poorer vehicle handling and reduced tyre life. Over 600,000 tyres and 1.5 million tonnes of CO2 are wasted in the UK every year due to tyre under-inflation.
Tyre safety and environmental performance are shown on the product label. There is a difference of 6% in fuel consumption between the lowest- and highest-graded tyres. This corresponds to a saving in CO2 emissions of over 10g/km for a full set of car tyres, correctly inflated.
In excess of 2 million tonnes a year of additional CO2 emissions result from the fitment of replacement tyres with higher rolling resistance than the original equipment. About half the car tyres offered on the replacement market are graded E for rolling resistance. (F is the lowest class and A the best). This has barely changed over the last 5 years, despite the introduction of the tyre labelling regulation. Improved consumer communication is needed to deliver the targeted contribution to reducing road transport CO2 emissions. BTMA members are committed to further improvement in tyre rolling resistance, including an engagement to reduce truck tyre rolling resistance by a further 15% by 2030.
Further information and reading can be found below: