Even the best mechanics still struggle with this…

What is an on-car brake lathe and why do mechanics use them?! 🚗🔧
When your steering wheel violently shakes while stepping on the brakes, you likely have warped brake rotors! Over time, the extreme heat of stopping causes the heavy metal discs to glaze over and develop uneven high spots. Instead of throwing the heavy metal rotors away, many professional mechanic shops use an "on-car brake lathe" to completely resurface them!
This incredible specialty tool mounts directly to the vehicle's wheel hub. It spins the rotor at high speeds while a precision cutting bit slowly traverses across the face, shaving off a microscopic layer of cast iron. This perfectly matches the new machined surface to the exact rotational axis of the car's hub, eliminating any shaking or vibration and saving the customer money on brand new parts!