In January 1955, Hawthorn joined the Jaguar racing team, replacing Stirling Moss, who had left for Mercedes. Hawthorn won the 1955 les 24 Heures du Mans following what has been described as an inspired drive in which he set a lap record of 4 minutes and 6.6 seconds during a three-hour duel with Fangio in the early stages. However, the race was marred by the worst disaster in motor racing history, a crash which killed 84 spectators and Mercedes driver Pierre Levegh. After overtaking Lance Macklin's Healey, Hawthorn suddenly braked in front of him on noticing an order to enter the pits to refuel, causing Macklin to swerve into the path of Levegh's Mercedes. After colliding with the Healey, the Mercedes skipped the earthen embankment separating the spectator area from the track, bounced through spectator enclosures, then hit a concrete stairwell parapet head-on. The impact shattered the front end of the car, which then somersaulted high, pitching debris into the spectator area, before landing atop the earthen embankment. The debris, including bonnet, engine, and front axle, which separated from the frame, flew through the crowd.