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Regenerative braking has much less tire wear than traditional braking because it's done much more slowly and smoothly. Absent any evidence, I don't believe tha

Regenerative braking has much less tire wear than traditional braking because it's done much more slowly and smoothly. Absent any evidence, I don't believe that claim. Unless you're skidding, I don't see how braking slowly and smoothly over a longer period causes any less tire wear than braking more rapidly for a shorter time. Additionally, since this is intrinsically tied to EVs, they weigh more and thus increase tire wear in all conditions.

kstrauser 2y ago
That seems plausible to me. Tires are made from rubber. If friction forces exceed how strong the rubber particles stick to each other, they get pulled loose. And road surfaces aren’t perfectly smooth, so when you’re accelerating, some rubber particles will experience more force than others. It seems believable that hard braking, even without leaving skid marks, could pull more rubber off a tire than gradual braking.
NewJazz 2y ago
Slower braking is generally accepted to cause less brake pad wear. I was only able to find this article, but I'm sure more convincing evidence can be found if you do more research than the quick ddg and clicking on the first result I did. Hard Braking: Less experienced drivers often react late to situations, slamming on the brakes instead of slowing down gradually. This creates more friction and heat, reducing pad lifespan. https://www.bimmer-mag.com/car-disc-brakes-wearing-out/ https://www.bimmer-mag.com/car-disc-brakes-wearing-out/
- Dylan16807 2y ago
  The claim was tire wear, not brake wear.
smileysteve 2y ago
Weight shift is a good reason, rear and all wheel drive Regen should result in 2+x as much contact patch, versus friction brakes typically favor the front 70/30, applying 70% of braking to only 2 tires.
Kirby64 2y ago
The same exact reason that accelerating quickly causes far more tire wear than accelerating slowly, only in reverse. By applying more torque to brake/accelerate, you cause more lateral force on the tires (think, smearing the rubber itself) which is what causes tire wear. With more force the rubber is stretched further, which fatigues it and breaks off pieces of it over time.
maigret 2y ago
> Absent any evidence, I don't believe that claim Acceleration and deceleration is calculated the same way: m/s^2. If you decelerate faster you put more stress on the system in a non-linear way - the square of it actually. This is why sport and race cars have huge brakes. The tire friction will also augment non-linearly - it will hold a certain acceleration and then quickly give up (slipping point), but the energy has to be transferred and partly absorbed all the time. > they weigh more and thus increase tire wear in all conditions Then get a lighter one if that is your concern. Defaulting to ICE is the wrong idea because they have much more externalities (like one ton of fuel per year that needs actually around 1.5 if you include the extraction and transport).

kstrauser 2y ago

That seems plausible to me. Tires are made from rubber. If friction forces exceed how strong the rubber particles stick to each other, they get pulled loose. And road surfaces aren’t perfectly smooth, so when you’re accelerating, some rubber particles will experience more force than others. It seems believable that hard braking, even without leaving skid marks, could pull more rubber off a tire than gradual braking.

NewJazz 2y ago

Slower braking is generally accepted to cause less brake pad wear. I was only able to find this article, but I'm sure more convincing evidence can be found if you do more research than the quick ddg and clicking on the first result I did. Hard Braking: Less experienced drivers often react late to situations, slamming on the brakes instead of slowing down gradually. This creates more friction and heat, reducing pad lifespan. https://www.bimmer-mag.com/car-disc-brakes-wearing-out/ https://www.bimmer-mag.com/car-disc-brakes-wearing-out/

Dylan16807 2y ago
The claim was tire wear, not brake wear.

smileysteve 2y ago

Weight shift is a good reason, rear and all wheel drive Regen should result in 2+x as much contact patch, versus friction brakes typically favor the front 70/30, applying 70% of braking to only 2 tires.

Kirby64 2y ago

The same exact reason that accelerating quickly causes far more tire wear than accelerating slowly, only in reverse. By applying more torque to brake/accelerate, you cause more lateral force on the tires (think, smearing the rubber itself) which is what causes tire wear. With more force the rubber is stretched further, which fatigues it and breaks off pieces of it over time.

maigret 2y ago

> Absent any evidence, I don't believe that claim Acceleration and deceleration is calculated the same way: m/s^2. If you decelerate faster you put more stress on the system in a non-linear way - the square of it actually. This is why sport and race cars have huge brakes. The tire friction will also augment non-linearly - it will hold a certain acceleration and then quickly give up (slipping point), but the energy has to be transferred and partly absorbed all the time. > they weigh more and thus increase tire wear in all conditions Then get a lighter one if that is your concern. Defaulting to ICE is the wrong idea because they have much more externalities (like one ton of fuel per year that needs actually around 1.5 if you include the extraction and transport).