Quality pads that worked great on my 2006 BMW M5. They were mounted on 15-inch front rotors with 2-piston floating calipers. After running in, they showed a significantly better braking performance. I didn't measure the braking distance, but it seemed shorter to me than with the original pads. on a 60-second auto-X course with no noticeable fading. Also, these pads don't emit much brake dust or noise. Win-win in my book.