Is that 50,000 miles per set of rotors? Or 100,000 on each of 2 different bikes where the rotors didn't wear out?Wow. I put over 100,000 miles on two sets of front rotors.
I'm at 52,000 on my first set of rotors and they are below specs. But you'll be happy to hear that I'm putting Gen I rotors on my bike and based on your and Ionbeams experience, they are superior to Gen II rotors.