2010-2017 BMW 550i GT xDrive. Pad Wear Sensor Type: Electronic. Pad Wear Sensor Included: No. Prepared For Pad Wear Sensor: Yes. Pad Quantity: 4. Rotor-friendly with proven longer rotor and pad life. Premium Materials: We source our materials from top-quality suppliers, ensuring that our brake pads are made from the highest-quality components available.