Originally Posted by THE TECH
I don't know why anyone would think that they could get rotors warrantied after using them at the track.
BMW USA has been a long-time supporter of the BMW Car Club (BMW CCA) and the track days that most chapters hold. They encourage this because it's good for sales.
Therefore, their generous approach to rotor and pad replacements. It would be embarassing for them to exclude such replacements because of track use which they actively encourage.