1984 Detroit Grand Prix
| Race details | |||
|---|---|---|---|
| Race 8 of 16 in the 1984 Formula One season | |||
 |
|||
| Date | June 24, 1984 | ||
| Official name | 3rd Detroit Grand Prix | ||
| Location |
Detroit street circuit Detroit, Michigan |
||
| Course | Temporary street course | ||
| Course length | 4.120 km (2.56 mi) | ||
| Distance | 63 laps, 259.56 km (161.28 mi) | ||
| Weather | Sunny, warm | ||
| Pole position | |||
| Driver | Brabham-BMW | ||
| Time | 1:40.980 | ||
| Fastest lap | |||
| Driver |
 Derek Warwick
|
Renault | |
| Time | 1:46.221 on lap 32 | ||
| Podium | |||
| First | Brabham-BMW | ||
| Second | Lotus-Renault | ||
| Third | Brabham-BMW | ||
The 1984 Detroit Grand Prix was a Formula One motor race held on June 24, 1984, in Detroit, Michigan. It was the eighth round of the 1984 Formula One season.
Defending World Champion Nelson Piquet of Brazil overcame a first lap crash (thanks to a complete restart) and dominated the entire weekend for his second consecutive win. Starting on pole, Piquet led from flag to flag and held off a brilliant charge by first-year driver Martin Brundle in the normally aspirated Tyrrell to win the third Detroit Grand Prix by less than a second. Brundle's car was eventually disqualified after a lengthy dispute for having illegal ballast in the water system. It was a brutal race of attrition, and only 6 cars finished.
During the initial practice sessions, as is customary on a street course, many drivers struggled to avoid the concrete walls lining the circuit. Nigel Mansell, however, immediately set the standard in his Lotus, with only Niki Lauda anywhere close. Patrick Tambay was back driving for Renault after breaking his leg at Monaco just three weeks before. American Mario Andretti, who had been called in as a possible replacement for Tambay in the race, was satisfied to spend the weekend as a spectator, watching his two sons run in the support races.
On Saturday, the track was considerably quicker as Mansell took nearly four seconds off his provisional best time from the previous day, turning a 1:42.172. His first pole position eluded him again, however, as Piquet clocked a stunning 1:40.980. Alain Prost also eclipsed Mansell with a 1:41.640 in his spare McLaren to line up alongside the Brabham on the front row. Brazilian rookie Ayrton Senna was seventh in the Toleman, just ahead of American Eddie Cheever's Alfa Romeo.
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