Power Stop Evolution Coated rotors are a direct bolt-on replacement for factory equipment. Fully coated using Genuine GEOMET rust preventative coating; treated with a thin layer of Genuine GEOMET 360 coating to protect against rust and corrosion without influencing the vehicle's braking performance. High Carbon metallurgy provides Improved Thermal Conductivity To Resist Distortion And Cracking; Improved Damping Coefficient To Reduce Squeal. Manufactured to original equipment specifications for fitment, weight, vane count, and performance. BMW 228i 2014-2015, BMW 228i xDrive 2015, BMW 328i 2012-2015, BMW 328i xDrive 2013-2015, BMW 330e 2016-2018, BMW 428i 2014-2015, BMW 428i Gran Coupe 2015, BMW 428i xDrive 2014-2015, BMW 428i xDrive Gran Coupe 2015