Motoring organisation RAC has moved to “set record straight” following controversial remarks from Environment Secretary George Eustice that electric vehicles (EV) may not be as green as people think. In order to do that the RAC, which wants to speed up EV take-up, commissioned battery electrochemist Dr Euan McTurk to address the suggestion that EVs produce more particulate from brake and tyre wear than their petrol and diesel counterparts.
Emissions Analytics caused a stir last week when sharing news of its tyre wear pollution testing. It reported extraordinarily high levels of tyre wear pollution. The European Tyre and Rubber Manufacturers’ Association (ETRMA) has now responded with a statement that challenges Emissions Analytics’ testing procedure while keeping the door open to further dialogue on the subject of tyre and road wear particles (TRWP).
One effect of regulatory-driven decreases in vehicle emissions is that other kinds of pollution become comparatively higher. The contribution of tyres to overall transportation pollution has been scrutinised on a number of occasions, and opinions on the matter vary. Emissions Analytics now brings the issue of tyre pollution back to the table, flagging up that they’re much more polluting than car exhausts.
The latest Equa Air Quality (Aq) Index shows assumptions that two-wheel-drive vehicles are cleaner than four-wheel drives are wrong. Comparing two and four-wheel-drive test results reveals that the more capable models produce less nitrogen oxides when compared through real, on-road driving. Concentrating on the latest Euro 6 compliant vehicles, it shows the vast improvements that some manufacturers have made in helping cut harmful tailpipe emissions when developing new cars.
According to Emissions Analytics, ratings printed on the European tyre label do not tell the “full story”. The Winchester-based company, which specialises in supplying real-world fuel consumption and emissions data based on tailpipe measurements, states that tyres with an F-rating for fuel economy perform as well as B-rated tyres at mid-range speeds.