1985 Detroit Grand Prix IV - FASTEST LAPS

23 Jun 1985 Detroit Street Circuit, United States

Pos	No	Driver	Car	Lap	Time
1	12	Ayrton Senna SEN	Lotus Renault	51	1:45.612
2	6	Keke Rosberg ROS	Williams Honda	58	1:47.311
3	27	Michele Alboreto ALB	Ferrari	43	1:47.518
4	11	Elio de Angelis DEA	Lotus Renault	43	1:47.572
5	28	Stefan Johansson JOH	Ferrari	56	1:47.797
6	23	Eddie Cheever CHE	Alfa Romeo	33	1:47.916
7	7	Nelson Piquet PIQ	Brabham BMW	40	1:48.045
8	5	Nigel Mansell MAN	Williams Honda	6	1:48.241
9	18	Thierry Boutsen BOU	Arrows BMW	6	1:48.554
10	4	Stefan Bellof BEL	Tyrrell Renault	12	1:48.681
11	26	Jacques Laffite LAF	Ligier Renault	6	1:48.702
12	2	Alain Prost PRO	McLaren TAG	8	1:49.001
13	3	Martin Brundle BRU	Tyrrell Renault	15	1:49.073
14	16	Derek Warwick WAR	Renault	4	1:49.485
15	1	Niki Lauda LAU	McLaren TAG	6	1:49.489
16	25	Andrea de Cesaris DEC	Ligier Renault	57	1:49.603
17	15	Patrick Tambay TAM	Renault	6	1:49.931
18	8	Marc Surer SUR	Brabham BMW	5	1:49.998
19	17	Gerhard Berger BER	Arrows BMW	21	1:50.576
20	22	Riccardo Patrese PAT	Alfa Romeo	6	1:50.729
21	19	Teo Fabi FAB	Toleman Hart	3	1:51.211
22	10	Philippe Alliot ALL	RAM Hart	6	1:53.752
23	29	Pierluigi Martini MAR	Minardi Ford	7	1:55.446
24	9	Manfred Winkelhock WIN	RAM Hart	2	1:55.649