Kia Optima 2011, 2012, 2013, 2014, 2015 - 2.4 L4 Engine. Hyundai Sonata 2015 - Hybrid Engine. Hyundai Sonata 2011, 2012, 2013, 2014. For your new braking system to operate at its performance capacity, it is important to 'break-in' the rotors and brake pads.
