McLaren Tyrrell F1 Tyre Change Challenge at Silverstone 1975

A tyre change challenge between McLaren (car no. 1 driven by Emerson Fittipaldi) and Tyrrell (car no. 3 driven by Jody Scheckter) on Friday practice for the 1975 British Grand Prix at Silverstone. That’s Ken Tyrrell at 00:19. NB There is no sound as video is from Super 8 Cine Film.