The most demanding braking sections
Of the Shanghai International Circuit's 8 braking points, 4 are classified as crucial for brakes and the other 4 are of average difficulty. Deceleration in six of these braking points is at least 4.5 g.
The most difficult braking point is that of curve 1: the cars hit the area at 201 mph and brake for 2.2 seconds in 200 ft to strongly decelerate to 51 mph. The pilots exert a load of 260 lb on the pedal and are forced to withstand 5.1g of deceleration, which equates to the value usually experienced by astronauts during their return to Earth.
Very close deceleration is also in bend 14 (5g), but the peak speed before braking (184.5 mph) and that at the entrance (78 mph) are lower: this means less braking time and space, 1.9 seconds and 147.6 ft.
Braking in bend 4 is an impressive feat: in only 151 ft, less than half the height of the highest mountain in Bahrain, the single seaters loose 108.7 mph with a deceleration of 4.7 g.