I bought my first rear set (fronts are only half worn at 56,000 miles) from BBY. They were Carbone Lorraine full sintered metal pads. I think this was a mistake. My rotor went from smooth at 27,000 miles when OEM pads wore out to severely scored and wear limit at 54,000 miles. I didn't make the connection until I bought the EBC replacement rear rotor and ordered another set of pads from BBY.Where do we but brake pads?