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472 points Brajeshwar | 2 comments | | HN request time: 0.448s | 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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1. bryanlarsen ◴[] No.46219820[source]
EV's produce 38% less tire & brake dust than ICE vehicles.

https://electrek.co/2025/05/27/another-way-electric-cars-cle...

non-exhaust emissions on an ICE vehicle are roughly 1/3 brake dust, 1/3 tire dust and 1/3 road dust. EV's have almost no impact on road dust, 83% lest brake dust and 20% more tire dust.

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2. throwawaypath ◴[] No.46235142[source]
Thank you for sourcing an answer!