Over the course of the season, three new cars were constructed (chassis numbers 029, 030 & 031) and the car's development continued. Several different noses and rear wing profiles were used, some especially tailored for specific circuits, and numerous changes were made to the suspension and rear bodywork. One of the problems Ferrari had with the 312T2B in 1977 was that the Goodyear tyres were increasingly unsuited to the car. As Goodyear continued to develop the tyres to cope with the high downforce of the Lotus 78, it became more difficult for the Ferrari (with less downforce) to build up sufficient tyre temperatures.