the early races the cars were little different from the 1976 specification cars, indeed two of the 1976 cars (chassis 026 and 027) were used in the early races. One of the few visible changes was the addition of Fiat logos to a Ferrari F1 car for the first time. Lauda was unhappy with the performance of the car at the first two races of 1977, and led an extensive test programme to develop the car in the weeks between the Brazilian and South African grands prix. These tests resulted in the introduction of several changes to the car, including a new rear wing, revised bodywork and suspension. Lauda went on to win the South African race, albeit in tragic circumstances, his car heavily damaged by debris from Tom Pryce's fatal accident. 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. Although still quick, the B-spec car proved to be more difficult to drive than the previous year's iteration of the car largely due to the insufficient tyre temperatures and the various wing profiles Forghieri and his team were using, some of which didn't work properly. In one example, Lauda retired from the Swedish Grand Prix because of the car's handling difficulties. However, despite its problems, the 312T2B was good enough to win the Drivers' Championship for Lauda, who won more through the car's reliability than outright speed. He took 3 wins, while Reutemann won once. The Constructors' Championship was also secured for a third successive season before Lauda walked out on the team before season's end after he won the championship at Watkins Glen in America. He was replaced by the fiery Canadian Gilles Villeneuve but Villeneuve could not get a handle on the T2B, as its neutral handling did not suit his oversteering driving style. Ferrari were due to run 3 cars at Mosport