Brake use during the GP
Even though it is a very long track, especially when compared to those used in Formula 1, the cars brake only 11 times each lap. The time the LMP1 cars spend braking totals 15% of the duration of the race, which is about three hours and fifteen minutes. This means that at the 24 Hours of Le Mans, the prototype braking systems are used as much as 12 Formula 1 GP races. For the LM GTE Pro cars, which according to regulations have very sophisticated braking systems, the brakes are used 17% of the time or for more than 4 hours.
Outstanding numbers that demonstrates how the braking systems on the cars competing in the 24 Hours of Le Mans have to guarantee the greatest possible performance while also providing the utmost in reliability. So, Brembo considers this race the ideal test bench for technical solution developments; once these developments pass the test here, they can be transferred to street cars.
The numbers for deceleration are also different: the LMP1 drivers face an average deceleration of 2.3 g per lap; the LM GTE Pro drivers stop, so to speak, at 1.6 g. Another measurement of the effort drivers and braking systems are required to give is the load applied to the brake pedal: up to 800 kg per lap. Taking into consideration the last edition of the race, the winning team (Porsche 919 Hybrid with Brembo brakes) completed 384 laps, which means the three drivers applied an overall load of 307 tonnes, which is equivalent to 50 African elephants.
The amount of energy dissipated in braking by the best LM GTE Pro drivers during the entire 24 Hours of Le Mans is 350-355 kWh, that is the same amount of electricity consumed by about twenty French residents during the 24 hour race.