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Comment by dragontamer

> EVs have higher torque but that doesn’t matter unless to drive like a mad-man

Its not torque that matters. Its simply friction and normal force. And that's directly caused by weight. Tire Wear is something like (weight^4), so small increases in weight will have huge increases to wear-and-tear.

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I think the real issue is that 3000lbs to 4500lbs, while a significant increase in tire wear, is still small compared to the big 5000lb to 8000lb vehicles that people use in practice. I'm sure a 4500lb EV is bad, but I'd expect a 6000 lb SUV or Truck to be worse (and a 8000lb electric-SUV to be the absolute worst).

But beyond just consumer cars are semi-trucks, which almost certainly are the top tire-wear vehicles on the roads. I'd expect almost all of the plastic from "tire wear" to come from a semi-truck (again, weight to the power of 4), given their grossly increased weight.

> walking, biking and public transportation

Semi-trucks are replaced by trains. Not by walking and biking. I mean, I want more walkable paths and all. But this _particular_ problem is solved with freight trains.

Last-mile is difficult. Do we want 100-people in a neighborhood driving 100x cars to a store? Or would we rather have 1x large truck deliver a (heavier) package to 100x different people? We're screwed in both cases, and rail can't save us.

But trains don't use rubber and trains wheels / rails are made from steel. I'm sure some particles fly off as iron (or iron-oxide/rust), but surely much less than rubber given how much stronger steel wheels / steel tracks are.

parent dragontamer 3 years ago

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