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Electric cars don't reduce emissions from tyre and brake wear. These particles make up a huge amount of air pollution at a size small enough to cause health iss
by arthurbrown 7y ago
Electric cars don't reduce emissions from tyre and brake wear. These particles make up a huge amount of air pollution at a size small enough to cause health issues. Once they settle, they are swept into waterways and form the majority of our microplastic problem.
https://www.sciencedirect.com/science/article/pii/S135223101630187X https://www.sciencedirect.com/science/article/pii/S135223101...
https://www.theguardian.com/environment/2018/nov/22/tyres-and-synthetic-clothes-big-cause-of-microplastic-pollution https://www.theguardian.com/environment/2018/nov/22/tyres-an...
- JauntyHatAngle 7y agoWhat is the relevance to the article? I skim read it, was there a part to do with tyre wear I missed?
- arthurbrown 7y agoIt's great that they're getting reductions of this magnitude for watercraft, this should absolutely continue. But it is damning for electric cars. The tailpipe emissions (measured in this article) that are reduced by going electric are marginal in comparison, and the other emissions are still entirely present.
- JauntyHatAngle 7y agoIt doesn't seem damning, electric cars are a not a silver bullet. This seems like an additional problem to tackle concurrently. If we came up with a new "Environmentally Friendly" tyre that solved that problem, than we would still have exhaust emissions to deal with. You don't need to fix both to attempt to improve one.
- jmpman 7y agoBrakes on Tesla are said to last twice as long or more. That would be a direct reduction in brake dust. Even with my Model 3 being floored from every stoplight since I’ve bought it, I’ve yet to hear the tires chirp. Suspect the tire wear is less than a comparable gas car due to the better traction control, and the harder tread in pursuit of lower rolling resistance.
- toddmorey 7y agoWell that and the regenerative braking.
- northwest65 7y agoAll tyres are in a state of slip when you are accelerating or braking, it's unavoidable.
- jmpman 7y agoIsn’t the purpose of traction control to keep the tires in contact with the ground in a static coefficient of friction, and thus not slipping?
- TylerE 7y agoIf there was zero slippage there would be zero acceleration.
- Robotbeat 7y agoNot quite right? The tires have strain, but they do not have to slip on the surface.
- adrianN 7y agoThat's not very intuitive. Can you provide a longer explanation for this?
- sokoloff 7y agoHere's a pretty decent, graspable explanation: https://physics.stackexchange.com/questions/142463/does-a-tire-need-to-slip-to-generate-force https://physics.stackexchange.com/questions/142463/does-a-ti... Tires that are not slipping are not creating any force against the road surface (so they don't have to slip when coasting, but will slip while accelerating longitudinally [braking or accelerating fore/aft] or laterally [cornering]).
- sephamorr 7y agoRegenerative braking certainly is reduced by EV's; a Tesla may never replace its brakes during its lifetime. Reading the paper, the dominant source of PM2.5/PM10 is resuspension of dust already on the road, rather than tires or brakes.
- kwhitefoot 7y ago> a Tesla may never replace its brakes during its lifetime. If you live in a northern area where they salt the roads you will need to reduce regen or perhaps occasionally do an emergency stop to grind the corrosion off the brake disks in the winter. I had to have two brake disks replaced at the last service on my 2015 S 70D because they were too rusty. But generally speaking you are correct.
- uoaei 7y agoWhat's the dominant source of dust on the road? Would expect a large amount of that to be tire/brake wear.