Career
Wietzes emigrated with his family to Canada when he was 12 years old. He participated in two World Championship Grands Prix, debuting on 27 August 1967 in the inaugural Canadian Grand Prix at Mosport. He retired on lap 69 with wet electrics and was subsequently disqualified for receiving outside assistance.
Wietzes also participated in the 1974 Canadian Grand Prix with a rented Brabham BT42 but again retired with a transmission problem.
He scored no championship points. In 1993, he was inducted into the Canadian Motorsport Hall of Fame.
He was the driver of the first safety car in, in the 1973 Canadian Grand Prix, taking a Porsche 914 course car on to the track after a collision involving François Cevert and Jody Scheckter.