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 Arab Emirates after 19 motor races held in 18 countries on five continents. The following teams and drivers competed in the 2010 FIA Formula One World Championship. With the withdrawal of BMW and Toyota, engine diversity in Formula One dropped to a 30-year low, with just four engine producers powering the entire grid (Ferrari, Mercedes, Renault and Cosworth), the lowest since . Four new teams joined the grid: Mercedes, Lotus Racing, Virgin Racing and HRT. Teams competed with tyres supplied by Bridgestone. The FIA announced its intention to open up the grid, aiming for a total of 13 teams, and