[nivens]

It's correct on this occasion though, under regen the motor is slowing the vehicle so the stresses of that are transferred through the driveshaft to the wheels. This isn't the case under 'traditional' braking. I'm not sure it actually supports the 'watery' or broken down grease theory though, I'm more inclined to think the parts just aren't up to it.

<Edit>
Added traditional to braking for everyone that wants to point out EVs always use regen as if that's not the fundamental issue here.

 

[nivens]

Jesus lads, we're talking about the differences between ice and EV braking.