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| ▲ | two_handfuls 2 days ago | parent [-] | | The tires wear the same amount here because either way, the car decelerates by the same amount at roughly the same rate. | | |
| ▲ | margalabargala 2 days ago | parent [-] | | No, it doesn't. With the ICE car, if you want to go 55, you might accelerate to 57 and then coast down to 55 without using brakes. With an EV you might accelerate to 57 and then brake to 55 when you let off the accelerator. Tire wear is a function of how often you use your tires to slow down the car. With an ICE car that's every time you hit your brakes. With an EV that's both brakes and regen. An EV's time spent braking or regenning is more than the time an ICE car spends braking. Someone could design an EV that behaves the way you describe, but aggressive regen sells better, so no one does. | | |
| ▲ | rogerrogerr 2 days ago | parent | next [-] | | > With an EV you might accelerate to 57 and then brake to 55 when you let off the accelerator. No one with more than a few miles of one-pedal driving would do this; it’d be highly unpleasant. What actually happens is you remap your pedal inputs: all the way off is braking, somewhere in the middle is coasting. Your brain will do it automatically and OPD is far more pleasant than two-pedal driving after a trivial learning curve. | | |
| ▲ | margalabargala a day ago | parent [-] | | I agree that OPD is better. I disagree that it's easy to coast with OPD. What actually happens is you wind up decelerating for curves, accelerating on straights more, and otherwise having better control of the car. Holding the pedal in a location where power is neither going to or coming from the motor is very difficult; usually you want power going to the motor anyway to overcome air resistance. Also, consider that most EVs will automatically regeneratively brake when going downhill with cruise control on. The last ICE car I owned just coasted and would speed up on large downhills with cruise on. |
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| ▲ | bryanlarsen 2 days ago | parent | prev | next [-] | | > With an EV you might accelerate to 57 and then brake to 55 when you let off the accelerator. No you don't; in fact you can't. Letting off the accelerator enough to apply regen is going to take far more than 2 mph off your speed. If you want to drop from 57 to 55 in an EV its done the exact same way you do it in an ICE vehicle: you coast. | | |
| ▲ | margalabargala a day ago | parent [-] | | Of the three EVs, all different manufacturers, that we've owned in the last decade, zero have coasting as an easy option. You have to either switch off OPD entirely, or else literally shift the car into neutral. And yes, you are right, if you do that you can coast and then your tire wear will be no worse than an ICE vehicle. Most EV drivers don't do those things. | | |
| ▲ | bryanlarsen a day ago | parent [-] | | Yeah, you're not shifting into neutral on your ICE car to coast from 57 to 55 either, you're just releasing the accelerator. You've still got the motor engaged, so you're doing mild engine braking on the ICE even if it's vernacularly called coasting. | | |
| ▲ | margalabargala a day ago | parent [-] | | Thanks to the magic of automatic transmissions, there's basically no difference! Certainly not enough to make up the EV tire wear from regen. |
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| ▲ | two_handfuls 2 days ago | parent | prev [-] | | Coasting wears your tires too. By the same amount. | | |
| ▲ | margalabargala 2 days ago | parent [-] | | That's...just completely false. If you lack the middle-school-level understanding of physics to understand why, I'm not going to be able to give it to you in an internet comment. Think hard about why braking and coasting would wear the tires differently. Here's a hint. Where does the energy go? What is doing the work to stop the car in each scenario? |
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