EDIT - I just removed the front brake discs (August 2018) after they had been on the car for about a year and a half. I assume that in that time we drove the car 25,000-35,000 miles. Both had deep scratches that appeared to have formed right on the edges of all the holes drilled. My theory is that the metal is eroding around the edges of the drilled holes and then seized with the backing pad, which could result in the rotor seizing in that area. Very disappointed and very upset. The padsβ¦