Other regulations have affected brake disc design still further. Until 2021, discs could be pierced with up to 1,480 holes of 2.5mm diameter. This year, the requirements allow for between 1,000 and 1,100 holes at the front and around 900 at the back, compared with 1,050 holes previously.
The updated rules also impose a new minimum diameter of 3mm. This means that while disc thickness stays the same, there will be fewer and larger holes, reducing cooling ability. Perforated brake pads have also been banned this season so Brembo is offering teams a choice of two alternative configurations. In terms of weight, the 2022 braking system is around 700g heavier per wheel, adding almost 3kg to the total weight of cars compared to last season.