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McLaren MP4-20 - brakes 23 April 2005

Imola is tough on brakes, so power and cooling is paramount, leading many teams to adopt McLaren's solution of radial, square-section channels to improve bite. These increase friction between disc and pad, improving stopping power in the first part of the braking procedure. This initial power is crucial, because as the car slows further, decreasing downforce cuts braking efficiency.