351–360 of 465 posts
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There are a few ways to get the weight down. Improvements in battery chemistry, lower range trims, and simply smaller vehicles.
Would love to buy a 100km range EV with easily accessible/rentable +~300km booster batteries for the occasional long drive. I guess an occasional ICE rental could fill the gap but they often nail you on long distances
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Many people live in locations where walking, the bus, or subway are never going to be practical and/or do regular activities that need personal transportation. If a car cost $100K I'd almost certainly still own one.
These locations are probably not financially sustainable. I would also say it's not impossible to make them urban friendly. For example, I think of stroad as opportunities to implement public transportation by getting of a lane or two. It is also easier to add bike lanes since you aren't constrained by how wide the streets are.
Farms, factories and logistics centres generally turn a profit. Not everyone has a desk job.
The Yale article and the paper both highlight the fact that EVs use regenerative braking and produce less dust. I was worried that this was a rehash of the astroturf campaign from a few years ago focusing on EV weight and how that was so bad for the environment because of tire and road wear. Unfortunately you need to read through the whole thing (instead of the headline and a few paragraphs) to see that information.
Granted, I would still rather them designed for lighter weight. But that’s a separate issue w suv culture which is bad for society and environment in general. Totally would buy a 3000 pound EV around the size of a euro hatch.
https://www.businesstimes.com.sg/international/cheap-mini-ev...
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Regenerative braking has much less tire wear than traditional braking because it's done much more slowly and smoothly. Also, none of these discussions use up-to-date information on EV tires. Consumers aren't willing to replace their tires much more often for an EV except at the high end of the market, tire manufacturers are already making tires last much longer for EV purposes. New designs are already shedding less d…
Teslas eat tires for breakfast. Instant torque and high weight - any benefit you get from regen breaking is not scratching that.
The Yale article and the paper both highlight the fact that EVs use regenerative braking and produce less dust. I was worried that this was a rehash of the astroturf campaign from a few years ago focusing on EV weight and how that was so bad for the environment because of tire and road wear. Unfortunately you need to read through the whole thing (instead of the headline and a few paragraphs) to see that information.
>astroturf Is the much greater weight of EVs not worse for tire and road wear?
Holistically, particle emissions from EVs are lower than gas powered cars due to reduced breaking (even above hybrids) and reduced exhaust.
At the end of the day, the vast vast vast majority of road wear and particle emissions are semi trucks. Not only do they weigh a heck of a lot more, but they also wear their tires until they disintegrate, when was the last time you saw an exploded tire remains on the side of the road and it wasn't from a semi?
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There's nothing categorical about EVs that make them eat tires. The aggregate data about average EV tire life is skewed by the relative popularity of and poor choices made by Tesla.
> There's nothing categorical about EVs that make them eat tires Apart from the increased weight and torque
The torque is real, though, but I think this is what the earlier commenter was getting at regarding bad choices made by Tesla: there is no reason "chill mode" isn't the default, which makes a Tesla drive more like an ICE vehicle. Most other EVs I've driven don't go full torque by default, so seem to have made a better choice there.
In personal experience, I went about ~45k miles on 4 new tires in my Model S before I replaced them. A bit sooner than I would have in my Prius but not much.
I also don't take off from a green light as if I were in a drag race, which probably helps.
The Yale article and the paper both highlight the fact that EVs use regenerative braking and produce less dust. I was worried that this was a rehash of the astroturf campaign from a few years ago focusing on EV weight and how that was so bad for the environment because of tire and road wear. Unfortunately you need to read through the whole thing (instead of the headline and a few paragraphs) to see that information.
According to the 4th power law that translates to 625x the road (and thus also tyre) wear, meaning even a fully loaded bus should produce significantly more particulates than the equivalent in cars with just one occupant each.
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They use drum brakes because drum brakes are protected better from the environment while brake discs are not and will quickly get covered in rust and dirt when not used for awhile and then be less effective when they are actually needed for an emergency braking situation. We only ever really went to disc brakes because they were slightly cheaper and easier to manufacture and since racing vehicles used disc brakes (be…
Seems like EV manufacturers should set their cars to use the friction brakes for the first few stops of each trip, both to clean off the rust & dirt, and also to test whether they still work.
That does wear off the rust.
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Many people live in locations where walking, the bus, or subway are never going to be practical and/or do regular activities that need personal transportation. If a car cost $100K I'd almost certainly still own one.
These locations are probably not financially sustainable. I would also say it's not impossible to make them urban friendly. For example, I think of stroad as opportunities to implement public transportation by getting of a lane or two. It is also easier to add bike lanes since you aren't constrained by how wide the streets are.
It's actually a fairly busy connecting artery between fairly rural towns (that also leads to a small city). It's also not something effectively served by public transit.
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If you have an EV and you care about health and the environment, use regenerative braking as much as humanly possible. Hint: driving fast or tailgating both increase the odds you'll have to use the friction brakes.
The problem is that not all cars correctly illuminate the brake lights when regenerative braking is in effect.