1975 South African Grand Prix

Ferrari had used the free month of February profitably, producing the new 312T model with a new transverse gearbox.

Once the debris had been cleared and holes in the catch fencing mended, there was a second accident as Niki Lauda spun on engine oil, hitting the wall at 120 mph.

With further violent accidents to Jody Scheckter and Guy Tunmer, the drivers deemed the circuit not safe and refused to continue until fencing defects were remedied and the track improved, further helped by the support of mechanics who insisted no more practice be carried out.

James Hunt retired with a broken throttle linkage, Vittorio Brambilla with oil cooler problems and Ian Scheckter crashed.

Emerson Fittipaldi was challenging Depailler for 4th place when he suffered a cracked plug lead.