> That's mostly a decision to increase turnaround speed on their bridges, it is faster to swap a rotor for a new one than it is to turn one down. I used to tur

> That's mostly a decision to increase turnaround speed on their bridges, it is faster to swap a rotor for a new one than it is to turn one down. I used to turn the rotors on my European cars, but about 10-15 years ago the alloys started warp after being turned just once or twice. Easier to just pay to replace than take the risk of doing the labor twice.