While vehicle exhaust emission have fallen dramatically over recent decades, a growing body of research highlights the overlooked impact of non-exhaust emissions—primarily from brake wear and tyre abrasion. These sources now account for the majority of particulate pollution from road transport, yet remain largely unregulated, though this will begin to change with the EU’s Euro 7 standards in 2026.

Studies from Europe and North America show that tyre and brake particles are widespread in urban air, contributing significantly to microplastic pollution and posing health risks including respiratory and cardiovascular disease. Heavier vehicles, including many electric vehicles, can exacerbate tyre wear, potentially increasing emissions despite gains in exhaust reduction.

Emerging solutions include improved tyre formulations, advanced brake technologies, and lighter vehicle design. In the meantime, behavioural changes—such as smoother driving and reducing vehicle weight—along with policy action, will be critical to reducing this invisible but significant pollution source.

Read the Forbes article here.