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473 points Brajeshwar | 14 comments | | HN request time: 0.319s | source | bottom
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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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jgeada ◴[] No.46219005[source]
Why does everyone immediately pivot to EVs on this subject, instead of (looks around) gargantuan SUVs and trucks everywhere, due to peculiarities of US policies regulating SUVs more leniently than cars on fuel efficiency?
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1. ceejayoz ◴[] No.46219220[source]
Tire wear is probably a thing - although I suspect the per-wheel control allows them to better respond to slips and sudden acceleration. I've noticed test driving a Tesla that it accelerates rapidly much more smoothly with no tire slippage than a combustion car.

Brake wear is likely nulled out by regenerative braking. And you're probably not driving highway speeds through Manhattan, either.

2. littlestymaar ◴[] No.46219222[source]
Tire, yes. But not brakes. With an EV most of the kinetic energy is converted back to electricity thanks to regenerative braking instead of being turned into heat through friction.

Overall the EV emit fewer airborne particles even without counting the exhaust.

3. looknee ◴[] No.46219268[source]
Chevy Suburban: ~ 5,700–6,100lbs

Model 3: ~ 3,860–3,900+ lbs

Suburban is about 1.5–1.6× heavier than a Tesla Model 3.

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4. 46218725 ◴[] No.46219287[source]
"A Tesla Model 3 has a greater curb weight than a Chevy Suburban" -- what? Source?

Suburban - 6,051 lbs Model 3 - 3,891 lbs

https://www.edmunds.com/chevrolet/suburban/2025/features-spe... https://www.edmunds.com/tesla/model-3/2025/features-specs/

5. acdha ◴[] No.46219288[source]
EVs are heavier than equivalent-sized ICE vehicles, but they do enjoy regenerative braking. The answer is to make smaller-sized cars but the auto industry has been pushing the farmer cosplay for decades because the profit margins are a lot higher on a $75k truck or SUV than $30k sedan.
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6. citrin_ru ◴[] No.46219311[source]
Tire wear - yet, but in theory they should emit less brake dust thanks to regenerative breaking.

> A Tesla Model 3 has a greater curb weight than a Chevy Suburban

Google AI tells me that Tesla model 3 (heaviest modification - AWD) is 1851 kg and Chevy Suburban 4WD is 2640 kg. Is it wrong?

7. fullstop ◴[] No.46219317[source]
Tires yes, brakes no. Friction brakes are barely used on EVs outside of specific scenarios. Mine will engage in three situations:

    1. The brake pedal is pressed hard
    2. The battery is 100% charged and the energy from braking can not be used
    3. I am backing up
For #3, the only reason why the brakes are used when backing up is to ensure that they are used even the tiniest amount and to clear any rust from the rotors.
8. ◴[] No.46219343[source]
9. dripton ◴[] No.46219456[source]
This is wrong. Exact weights vary with trim levels, but Model are around 4000 lbs. and Suburbans are around 6000 lbs.
10. ◴[] No.46219647[source]
11. PaulHoule ◴[] No.46219695[source]
The Chevy Suburban has been one of the largest vehicles on the market since 1934. [1]

If you wanted an EV to match the Suburban it would probably be that Cadillac Escalade IQ in terms of size, comfort, and towing capacity -- that's got a curb weight of 9,100 pounds which is 1.5x heavier than the Suburban.

I'd think the BMW 3 Series has a similar vibe to the Model 3 and that has a base curb weight of 3536 which is about 10% less than the Model 3.

[1] it's the oldest nameplate that's been made continuously

12. ◴[] No.46219748[source]
13. fullstop ◴[] No.46219856[source]
It's a tough area, honestly, and will be until public charging is better. You need a bigger battery to get the range that people need (want?) to be able to reach the next charging station. Realistically, though, most people don't really venture far from home but they don't like the idea that they can't venture far from home without finding a place to charge.

EV charging availability has drastically improved over the last few years, so maybe there is hope for smaller EVs.

14. pqtyw ◴[] No.46221132[source]
A a bus is over 40,000lbs. More than 10x heavier than a Tesla Model 3.