Lewis Hamilton may have a joint-record seven Formula 1 titles to his name, but he suggested winning the championship with Ferrari would be the most important yet.

Seven-time Formula One world champion Lewis Hamilton made his first public comments since signing with Ferrari on Tuesday at the F1 75 Live event at the O2 Arena in London. Hamilton, who won six of his seven drivers' championships during a 12-year run with Mercedes, changed teams in the biggest move of the F1 offseason.

Lewis Hamilton began his highly anticipated Ferrari career in January, and ESPN goes inside his first days working for F1's famed Italian marque.