Round 7

Detroit

Weekend schedule

Pos	No.	Driver	Team	Lap	Time	Avg. Speed
01	7	John Watson	McLaren	55	1:47.668	134.514
02	1	Keke Rosberg	Williams	55	1:47.969	134.139
03	5	Nelson Piquet	Brabham	46	1:48.332	133.689
04	3	Michele Alboreto	Tyrrell	54	1:48.443	133.552
05	28	René Arnoux	Ferrari	23	1:48.934	132.950
06	2	Jacques Laffite	Williams	28	1:49.252	132.563
07	25	Jean-Pierre Jarier	Ligier	21	1:49.340	132.457
08	35	Derek Warwick	Toleman	20	1:49.351	132.443
09	22	Andrea de Cesaris	Alfa Romeo	27	1:49.423	132.356
10	29	Marc Surer	Arrows	57	1:49.809	131.891
11	12	Nigel Mansell	Lotus	36	1:50.029	131.627
12	4	Danny Sullivan	Tyrrell	26	1:50.088	131.557
13	36	Bruno Giacomelli	Toleman	41	1:50.150	131.483
14	30	Thierry Boutsen	Arrows	21	1:50.296	131.308
15	33	Roberto Guerrero	Theodore	36	1:50.351	131.243
16	15	Alain Prost	Renault	29	1:50.555	131.001
17	8	Niki Lauda	McLaren	17	1:51.318	130.103
18	34	Johnny Cecotto	Theodore	34	1:51.768	129.579
19	26	Raul Boesel	Ligier	56	1:51.804	129.537
20	6	Riccardo Patrese	Brabham	6	1:52.031	129.275
21	9	Manfred Winkelhock	ATS	19	1:52.093	129.203
22	11	Elio de Angelis	Lotus	4	1:52.584	128.640
23	23	Mauro Baldi	Alfa Romeo	44	1:53.198	127.942
24	16	Eddie Cheever	Renault	3	1:53.926	127.125
25	32	Piercarlo Ghinzani	Osella	4	1:55.000	125.937