Spa 1,000 Kilometers: September 1st, 1985

For the second time in as many races, death would occur at a Group C race, when Stefan Bellof (the 1984 Group C sports car racing champion), crashed his Porsche 956 at Eau Rouge corner, and died shortly thereafter at the hospital due to head injuries/head trauma, and due to Bellof’s passing, the race would be abandoned without being fully completed.

https://www.racingsportscars.com/photo/Spa-1985-09-01.html

Mosport 1,000 Kilometers: August 11th, 1985

This was the first of two straight races, that would mark tragedy in the world of Group C competition, with the loss of Manfred Winkelhock in a high speed accident during the race where he became trapped in his Porsche 956 and could not escape the wreckage, dying from his injuries sustained in the crash, in the hospital, a few days later.

https://www.racingsportscars.com/photo/Mosport-1985-08-11.html