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The eldest son of French racing legend Louis Rosier shared his father’s greatest victory. Also named Louis, he attempted to avoid confusion by racing as Jean-Louis Rosier.
They entered a Lago-Talbot T150C in the 1949 Le Mans 24 Hours and ran fourth early in the race. However, a failure in the cooling system in the second hour forced them to retire before he had driven.
Le Mans success with his father
Father and son enjoyed more success a year later when sharing a barely modified Grand Prix Lago-Talbot T26GS to victory. Raymond Sommer led early on but soon hit trouble and the older Rosier was the class of the field thereafter. They led by seven laps at one stage but lost 45 minutes in the pits changing a rocker and dropped to third. Jean-Louis Rosier only took two turns behind the wheel (one of which was for just two laps) but his father recovered the lead and won by over two laps.
They enjoyed further success on the Monte Carlo Rally with a Renault 4CV – winning their class in 1949 and 1951. Jean-Louis raced at Le Mans on three more occasions without success. He managed to crash and roll his car on the very last lap of the 1951 race.
His fifth and final Le Mans 24 Hours (1954) again ended in an accident – co-driver Pierre Meyrat colliding with Jimmy Stewart’s Aston Martin DB3S on the approach to Maison Blanche after six hours.