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And that pollution of tire degradation is one of the biggest sources of particles from cars

Don’t forget the brakes. When the rotors get worn down, where did they go?

Not a big issue with evs, most use regenerative breaking.

As do hybrids! Even mild hybrids like those new pickups

The rotors aren't the problem, the pads are. Rotors are just cast iron, and they wear very slowly compared to the pads.

Do you have a source for that claim? Typically I see breakdowns by chemical formula

For example,