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dgacmutoday at 3:49 AM3 repliesview on HN

It gets studied. EVs are often heavier, which is worse for tire wear, but use regenerative braking, which is better for brake dust.

Overall, EVs are likely a net win on the combination of these two things, and a big win on exhaust emissions, but it would be nice if we could shift to lighter and smaller vehicles and increase the mix of non-cars such as e-bikes and mass transit.

Source: https://www.eiturbanmobility.eu/wp-content/uploads/2025/05/4...


Replies

jbmtoday at 4:01 AM

This will be met with consternation, not appreciation. The people who comment about brake dust in EV topics are the people who complain about birds when talking about windmills.

We know it is disingenuous because no one cares about this when discussing overweight trucks and SUVs. Good news about a reduction in pollution from EVs? Can't have that. It's like the "At what price" meme around headlines about China.

Going forward, I will downvote any comment about "brake pollution" and "tire pollution" that does not begin with - specifically - "This is a bigger issue for large, gas-powered trucks and SUVs", and invite you all to do so to. The association of these shitty comments with EV topics is as organic as lighter fluid.

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01HNNWZ0MV43FFtoday at 3:57 AM

Plug-in hybrids are a wonderful middle point on the Pareto frontier.

Wikipedia lists the 3rd-gen Prius Prime at roughly 3,500 pounds curb weight, and the Tesla Model Y at 4,100-4,600 pounds, I assume depending on the battery it's equipped with.

The Prius Prime has 40+ miles of all-electric range, and it can reach highway speeds with the gas engine off. So your day-to-day driving is all electric, then you still have an engine for harsh winter days, power outages, and you have 600 miles EPA range on gas for sudden road trips.

People are really sleeping on hybrids. Even a used non-plug-in Prius will get 50 city and 50 highway MPG. No gas sedan can do that.

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margalabargalatoday at 4:18 AM

> but use regenerative braking, which is better for brake dust

Which unfortunately also increases tire wear from regen braking during periods when an ICE vehicle would be coasting without braking.

EVs are much (much much) better for CO2, much better for brake dust, and much worse for tire dust.

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