Do metallic pads eat rotors? The answer is: it depends on which rotor you are talking about. Take a close look at a cheaply made metallic brake pad and see how big the wire and steel particles are in the mix. Compare that to high-performance premium pads and see the finely cut, even metal distribution. If you can't believe your eyes, run your fingers over the pads. Your finger will pick up metal slivers from the cheap pads while the premium pad offers a soft, smooth surface.