2011 Formula One World Championship 2011 Formula One World Championship The 2011 FIA Formula One World Championship was the 65th season of FIA Formula One motor racing. The original calendar for the 2011 Formula One World Championship consisted of twenty rounds, including the inaugural running of the Indian Grand Prix before the cancellation of the Bahrain Grand Prix. Pirelli returned to the sport as tyre supplier for all teams, taking over from Bridgestone, marking their return to Formula One for the first time since the 1991 season. Red Bull Racing was the reigning Constructors' Champion. Red Bull Racing's Sebastian Vettel was the defending Drivers' Champion,
2010 Formula One World Championship technical and sporting regulations applicable for the season were the subject of much debate. Before the start of the season, 2009 Drivers' Champion Jenson Button joined McLaren, while the 2009 Constructors' Champion, Brawn GP, was bought by German motor vehicle manufacturer Mercedes-Benz and was renamed as Mercedes GP. The 2010 season saw the return of the most successful driver in Formula One history, with seven-time World Champion Michael Schumacher coming out of retirement after a three-year absence since 2007. The season's first race was held on 14 March in Bahrain and the season concluded on 14 November in the United