I am running the Racing Brake 13" Rotors on my car with the Hawk HPS pads. I have noticed that there is no brake dust now, but there is rust coming off of the rotors. Anyone have some info on this?

I am worried this may ruin my wheels.

 

Iron rusts - not much you can do about it.

 

Any rotor will rust if you let your car sit for a while. It only takes few stabs at brake pedal while moving to get rid of it though.