Lewis Hamilton

Total Earnings: $39 million

Salary/Winnings: $36 million

Endorsements: $3 million

Hamilton inked a three year contract extension in May to drive for Mercedes F1 team. The deal kicks in with the 2016 season and could pay out more than $140 million, including bonuses. Hamilton won his second F1 World Championship last year and is headed towards a third in 2015. Hamilton moved to Mercedes for the 2013 season in part to open potential sponsorship opportunities. He is one of the most marketable drivers in the sport.