For break-in of semi-metallic pads (immediately following installation), apply moderate pedal pressure at vehicle speed of about 40 mph. Bring the vehicle to a complete or near-complete stop. Remove your foot from the brake pedal, and again accelerate to 40 mph. Apply moderate brake pressure again, bringing the vehicle to a complete or near-complete stop. Repeat process,ideally, 12-30 times. Drive about 1/4-mile between each braking. If possible,do not sit at idle with the brake pedal depressed immediately following one of these deceleration runs, to avoid creating localized hot spots on the rotor
When dealing with carbon-metallic pads, bear in mind that not all are created equal. Performance Friction pads, for instance, are burnished using a laser process. For this type of pad, Performance Friction recommends a bedding procedure of moderate braking that brings rotor temperature up to 600 degrees F, repeated in a series of 12 stops. Bringing the rotors to this degree (600 deg. F), notes Performance Friction Darrick Dong, you're trying to cast-off any low-density volatile that might be trapped in the friction surface, or any other contaminants or solvents in the brake rotor.
__________________ Rob Hernandez, AFM |