Breaks are only part of the problem unfortunately. > Resuspension of dust already on the road’s surface is the most significant contributor to non-exhaust PM b

Breaks are only part of the problem unfortunately. > Resuspension of dust already on the road’s surface is the most significant contributor to non-exhaust PM by far, however these particles are difficult to characterize and manage because they could come from anywhere before landing on the road. Brakes are the next most significant source, and may also be particularly hazardous because of their small size and high metal content. Tires contribute the least, but they release large amounts of particles which act as microplastics in ecosystems. https://www.nrdc.org/bio/john-bailey/beyond-tailpipe https://www.nrdc.org/bio/john-bailey/beyond-tailpipe