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ADSSDA | 4 years ago

Isn't most PM 2.5 pollution produced by brake pad and tire wear, which is made worse by EVs due to their weight?

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deeviant|4 years ago

> which is made worse by EVs due to their weight?

What a ridiculous supposition.

First the weight difference is not that huge, second EV's use regenerative breaking for a huge portion of their breaking spectrum bypassing break pads entirely.

Gibbon1|4 years ago

People tend to assume that gasoline engines don't produce PM2.5, but that's apparently wrong. I saw some seemingly legit report that claims tire and brakes create about 10% of the PM2.5 pollution.

EV and Hybrid cars have regen braking which reduces brake pad wear. I don't know about PM2.5 but hybrids also emit much less NOx than straight gasoline cars.

jsharf|4 years ago

These are idle cars which are not braking, so the PM2.5 here is purely the engine pollution. City life might not be affected as much, but school buildings with cars waiting outside will be!

oh_sigh|4 years ago

If the ev has regenerative braking, the brakes actually last much longer than in ICE cars. Not sure how tires are affected but I'd imagine they do have a shorter life, and I'm not sure how the longer brake life balances with (probably) shorter tire life from a pollution perspective

robbedpeter|4 years ago

Why would tires last longer in an ICE vehicle? I don't think tires care what makes them spin.