The Triumph TR3 is a British sports car produced between 1955 and 1962
by the Standard-Triumph Motor Company of Coventry, England. A
traditional roadster, the TR3 is an evolution of the company's earlier
TR2 model, with greater power and improved braking. Updated variants,
popularly but unofficially known as the "TR3A" and "TR3B", entered
production in 1957 and 1962 respectively.
In 1959, three extensively modified TR3s, referred to as ‘TR3S’ models,
were run at the 24H du Mans. Resembling the production TR3, the Le Mans
cars employed glass fibre body shells, were six inches longer than the
production vehicle, and powered by the prototype 1,985 cc (121.1 cu in)
twin-cam ‘Sabrina’ engine. The Jopp/Stoop TR3S reached as high as
seventh place overall before being forced to retire for mechanical
difficulties with just over an hour remaining in the race.