Practice: Some modifications to the circuit were made to slow down the cars.
The chicane after the tunnel had become more angled and after the Rascasse another sharp turn; the Antony Noghès corner, had been introduced making the exit safer and faster.
Thus the circuit had become 16 meters longer to measure 3.328 km.
World Champion Alain Prost in the reliable McLaren with the superb Porsche engine had no problem whatsoever to take a comfortable pole position.
The new Cosworth engines in the Lola’s made an impressive debut. 20 cars qualified for the grid.
Starting Grid
1 Prost 1’27.63
5 Mansell 1’23.05
McLaren Porsche
Williams Honda
12 Senna 1’23.18
27 Alboreto 1’23.90
Lotus Renault
Ferrari
20 Berger 1’23.96
7 Patrese 1’ 24.12
Benetton BMW
Brabham BMW
26 Lafitte 1’24.40
16 Tambay 1’24.69
Ligier Renault
Lola Ford
2 Rosberg 1’24.70
3 Brundle 1’24.86
McLaren Porsche
Tyrrell Renault
6 Piquet 1’25.29
25 Arnoux 1’25.54
Williams Honda
Ligier Renault
4 Streiff 1’25.72
18 Boutsen 1’25.83
Tyrrell Renault
Arrows BMW
28 Johansson 1’25.91
19 Fabi 1’25.93
Ferrari
Benetton BMW
17 Surer 1’26.30
15 Jones 1’26.46
Arrows BMW
Lola Ford
14 Palmer 1’26.64
8 de Angelis 1’27.19
Zakspeed
Brabham BMW
Race Lafitte started from the back. A start without any barrier shoving in the Ste-Devote and Prost took the lead followed by Senna, Mansell, Alboreto, Rosberg and Berger. Prost dominated the race from beginning to end. Rosberg in second place has to leave this position for 7 laps to Senna.
Senna in the Lotus
But in lap 42 Rosberg reclaims his 2nd place and thus the two McLaren’s ate away the laps. Senna, in the Lotus, held on to his 3rd place and Mansell kept his 4th position. At the back of the field Tambay and Brundle had a nasty accident in Mirabeau, with Tambay’s Lola crashing into the barriers.
With complete domination Prost writes his third Monaco victory, with pole position and fastest lap.