Originally Posted by
WhyFi
I've never sanded down my rotors, though I've sanded down my pads once in a while, when they've been contaminated.
I tried it. I had a new rotor damaged by a pad that was beyond end-of-life (kid was on the bike, we were in an active wildfire zone, and no time and nowhere to stop and deal with the problem). I wanted to see if I could salvage it, as it looked a bit pitted but otherwise ok. It only made it worse.