Brake rotors being pushed to the limit!
So how much can a disk brake take before it fails? They are built to withstand some crazy stuff, but everything has a breaking point. These people test them and push them all the way to and past that point. It starts by just getting them red-hot, but before long they begin to come apart. It also has to do with the material. An expensive carbon-ceramic won’t have as big of a problem, but a simple metal one will only last a short time in these conditions.