When the 2021 season gets underway in Bahrain, Pirelli will celebrate its 400th Formula 1 world championship race. Nearly half of those races – 197 to be precise – will have taken place since the Italian company returned to Formula 1 as the exclusive supplier at the start of 2011. But the landmark also provides a chance to celebrate some of the highlights from Pirelli’s entire involvement in Formula 1 – which goes right back to the beginning of the world championship more than 70 years ago…