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472 points Brajeshwar | 1 comments | | HN request time: 0s | source
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lkbm ◴[] No.46218856[source]
> Particulates issued from tailpipes can aggravate asthma and heart disease and increase the risk of lung cancer and heart attack. Globally, they are a leading risk factor for premature death.

Minor nitpick, but tailpipes aren't the primary source of emissions. The study is about PM2.5[0]. which will chiefly be tires and brake pads. Modern gasoline engines are relatively clean, outside of CO2, though diesel engines spit out a bunch of bad stuff.

[0] https://www.nature.com/articles/s44407-025-00037-2

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throwawaypath ◴[] No.46218933[source]
How do EVs fare in this regard? Brakes are used significantly less, but the additional weight from the batteries chews through tires faster.
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kyleee ◴[] No.46218960[source]
And unfortunately there is some nasty stuff in tires
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HPsquared ◴[] No.46219166{3}[source]
There never seems to be much discussion on reducing the harm from tire (and I suppose road surface) particulates. Maybe that's the next frontier?
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1. potato3732842 ◴[] No.46231926{4}[source]
Because a hard long wearing tire is a low grip tire and the direct tradeoff between safety and the environment is not something either crowd wants to deal with because there's so much overlap.