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and brake wear have become such a significant proportion of emissions
As a conscious "experiment" I monitored how much I used the foot brake vs regenerative "braking" during a 61 mile journey the other day. Mixture of dense urban, countryside and motorway road use:
I used the foot / caliper brakes precisely once during the outing: whilst I was reverse parking on returning to my house.
So, from a brake dust perspective, EVs do seem to be almost infinitely better.
Particulate emissions are only one category of harmful emissions. You've chosen a very funny way of saying "EVs completely eliminate harmful gaseous emissions such as NOx and carbon monoxide and sulphur dioxide and significantly reduce particulate emissions."
Interestingly it looks to me like the main reason tyre and brake wear have become such a significant proportion of emissions is that exhausts contain a lot less particulates than they did 20 years ago (graph on page 25).
https://uk-air.defra.gov.uk/assets/documents/reports/cat09/1907101151_20190709_Non_Exhaust_Emissions_typeset_Final.pdf
(also that report seems to derive a lot of its numbers from some very speculative modelling and only small scale real world evidence)