Description: Ventilated with holes. 440i, 440ix. With cross drilled rotor. Brembo high-performance 4-piston aluminum fixed caliper on the front axle and 2-piston aluminum fixed caliper on the rear axle. Improved thermal resistance thanks to larger- internally-ventilated- lightweight-construction sports brake discs. Drilled (dimpled) and grooved brake discs also reduce water film build-up between the brake lining and the disc surface. With xdrive, with m sport brake, with holes.

Description: Brembo high-performance 4-piston aluminum fixed caliper on the front axle and 2-piston aluminum fixed caliper on the rear axle. Improved thermal resistance thanks to larger- internally-ventilated- lightweight-construction sports brake discs. Drilled (dimpl ...