But that wasn’t the end of the controversy. The new World Championship leader’s car was a scant 2kg under the 540kg minimum weight limit, which led to his disqualification.
With the order reshuffled, runner-up Elio de Angelis in the second Lotus-Renault inherited his second career win, and with it the lead of the Drivers’ Championship, from the Arrows-BMW of Thierry Boutsen. Until Damon Hill finished second in Hungary 12 years later, Boutsen’s result would remain the British Arrows team’s best result in F1.
The bottom step of the podium was filled by Patrick Tambay, ahead of Prost’s team-mate Niki Lauda, Williams’ Nigel Mansell and Johansson, who’d completed enough laps to be classified as the final points scorer.
De Angelis was as surprised as anyone to be declared the winner, for what would be the final time in his tragic and all-too-short F1 career, as he nursed the brakeless Lotus home.
San Marino Grand Prix, 1985
1. Elio de Angelis (ITA) – Lotus 97T-Renault, 60 laps
2. Thierry Boutsen (B) – Arrows A8-BMW, 59 laps
3. Patrick Tambay (F) – Renault RE60, 59 laps
4. Niki Lauda (AUT) – McLaren MP4/2B-TAG, 59 laps
5. Nigel Mansell (GB) – Williams FW10-Honda, 58 laps
6. Stefan Johansson (S) – Ferrari 156/85, 57 laps
Photographs courtesy of LAT Images