The 2006 M6 is equipped with a sophisticated braking system. Compound, cross-drilled, two-piece rotors cut unsprung weight and reduce deformation under hard-braking, high-heat conditions by 20 percent. BMW also claims that this design virtually eliminates vibration when the brakes are red-hot, and the likelihood that the rotors will crack under duress. Two-piston front calipers clamp the pads onto huge 374 x 36mm front discs, while equally impressive 370 x 24mm pizza pans are attached in back. In addition to sheer stopping capability and resistance to abuse, the brakes are equipped with ABS, electronic brake proportioning, braking stability enhancement, Dynamic Brake Control, Brake Standby, and Brake Drying. Brake Standby snugs the pads close to the rotors with any sudden release of the accelerator in anticipation of a panic braking maneuver, and Brake Drying periodically and transparently dries the brake pads on the rotors based on input from the rain sensing wipers to ensure maximum performance regardless of weather conditions.