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 to use it. The teams objected to what they believed would be a two-tier championship and five of the teams within the Formula One Teams Association (FOTA), Ferrari, BMW Sauber, Renault, Red Bull Racing and Toro Rosso announced their intentions to withdraw from the 2010 championship. BMW Sauber later announced on their withdrawal from Formula One at the end of the 2009 season, due to economic problems. Following negotiations, the FOTA teams unanimously decided to withdraw at the end of the 2009 season unless the budget cap rules were changed. Williams and Force India both submitted their own entries and