The october 1955 london motor show saw the unveiling of the new triumph tr3 sports car, which supplanted the three-year-old tr2. The newcomer followed the general lines of its predecessor, though a radiator grille covered the frog-mouthed air-intake of the earlier car, and a small rear seat could be fitted as an option.
Increased power output the power rating was increased in comparison with the tr2s, from 90 to 95 hp and an extra 5 hp soon followed. With simple, no-nonsense bodywork and a power unit from the mass-produced standard vanguard, as well as the first set of disc brakes in a mass-produced car, the triumph trs of the fifties and sixties were aimed at the youth market В¦ more than 83,000 were sold by the end of 1961. double production demand for the tr3 was such that standard-triumph had to double its production to 600 trs a day, many of which were exported to continental europe and north america. Tr3 production was scheduled to cease in the summer of 1961 to make way for the new tr4, but price resistance to the new model in the United States was so great that standard-triumph was forced to put the tr3 back into production between march and october of 1962.
The main external differences between the tr3 and the earlier tr2 were the radiator grille and the chrome beading where the fenders joined the body