According to Brembo technicians, the Spa-Francorchamps Circuit is one of the most demanding circuits for brakes. On a scale of 1 to 5, it earned a 4 on the difficulty index, the same as the Monza track which will be the racing venue in a week's time.
Considered the most complete track in the Formula 1 World Championship because of its combination of bends and straight sections of all kinds, it has 3 long braking sections which all last for over 2.5 seconds, an unreachable value for all the bends at Silverstone.
The superiority of carbon
In Formula 1, carbon discs have been used since the Eighties and then spread into other motorsport competitions. Indeed, no other element offers that special combination of light weight, high thermal conductivity, and absence of dilation, even at a thousand degrees, that distinguishes Brembo F1 discs.
The density of carbon is 1.8 grams per cubic centimeter, compared to steel's 7.8 grams and gray cast iron's 7.2 grams. Its thermal expansion coefficient is one twentieth of that of steel and one fifteenth of cast iron. The melting point of carbon is higher than 3,000°C (5,430°F) compared to the 1,200°C (2,190°F) of cast iron and 1,800°C (3,270°F) of steel.