Some forms of rust in a vehicle braking system are normal, and no cause for alarm. For instance: brake rotor surfaces may become covered in a thin film of rust if the vehicle is parked outside ...

Take the vehicle out for a spin that includes some stop-and-go driving, then check the rotors. If rust remains visible, repeat this process, but drive a little faster and brake a little harder.

Over time rotors wear because of friction, disc pad wear-and-tear, and things like mud and road salt that cause rust. As the brake calipers squeeze and clamp the brake pads down on the disc rotors ...

You can save hundreds of dollars by replacing the pads and rotors yourself. And it only requires a few cheap tools.