2014 Buick Regal Premium L4 2.0L Front & Rear with Solid Rear Rotors without Brembo brakes 2015 Buick Regal Base Model L4 2.0L Front & Rear with Brake Code J60 without Brembo brakes 2015 Buick Regal Base Model L4 2.4L Front & Rear with Brake Code J60 2017 Buick Regal Premium Front & Rear with 16 Inch Wheels.