[ruddct]

The electric Hummer’s battery weighs more than my first car. It has a curb weight over 9000 pounds.

Heavy cars do more damage when they hit things, emit more brake dust, and cause more damage to roads. Exploring ways to reduce (or appropriately tax) their use should be celebrated.

[rfiat]

It should be noted that it's possible for electric (~heavy) vehicles to emit less brake dust than conventional vehicles due to regenerative braking

[1970-01-01]

Cheaper economy vehicles will use metallic brake pads that emit lots of dust. More expensive luxury vehicles (SUVs and trucks) use premium ceramic pads that wear much less per mile. EVs and hybrids add regen and don't need brakes to stop unless it's under emergency braking. It's absolutely not apples to apples, and people need to understand that fact.

[1970-01-01]

>emit more brake dust

This is false.

[LewisJEllis]

Uh, what? All else equal, a heavier vehicle will emit more brake dust. Basic physics says so. If you want to claim otherwise, bring a source.

It may be the case that electric cars, thanks to regenerative braking, do not emit more brake dust than a lighter non-electric car, but that's not what the parent comment here was saying.

[1970-01-01]

They're not equal.

>It may be the case that electric cars, thanks to regenerative braking, do not emit more brake dust than a lighter non-electric car, but that's not what the parent comment here was saying.

That's exactly what parent said.

[1970-01-01]

Did you just downvote a fact?

[gkop]

Top result for “do heavier vehicles emit more brake dust?” is https://www.sciencedirect.com/science/article/pii/S259016212...

> Heavier vehicles emit higher levels of brake and tire particles

[1970-01-01]

Citing your link

"Therefore, future research is needed to better understand the overall impact of vehicle electrification on brake and tire wear emissions"

[gkop]

We are talking about weight of vehicle and its impact on brake dust. Electric is another dimension.

[1970-01-01]

see top parent comment, its nowhere near as simple as weight adds dust, and hasn't been since brake pad tech changed about 20 years ago

https://en.wikipedia.org/wiki/Brake_pad#Materials