Which years were the line of cars that the Ferrari TR were closely related to built?
Ferrari TR: The Ferrari TR, or 250 Testa Rossa, is a race car model built by Ferrari in the 1950s and 1960s. Ferrari TR:  They were closely related to the rest of the Ferrari 250 line, including the 250 GTO. Ferrari 250: The Ferrari 250 is a sports car built by Ferrari from 1953 to 1964.
1953 to 1964