1985 Detroit Grand Prix

1985 Detroit Grand Prix
Race 6 of 16 in the 1985 Formula One World Championship
Race details
Date	June 23, 1985
Official name	4th Detroit Grand Prix
Location	Detroit street circuit Detroit, Michigan
Course	Temporary street course
Course length	4.120 km (2.56 miles)
Distance	63 laps, 259.56 km (161.28 miles)
Weather	Clear and cool with temperatures reaching up to 80.1 °F (26.7 °C); wind speeds up to 23 miles per hour (37 km/h)[1]
Pole position
Driver	Ayrton Senna	Lotus-Renault
Time	1:42.051
Fastest lap
Driver	Ayrton Senna	Lotus-Renault
Time	1:45.612 on lap 51
Podium
First	Keke Rosberg	Williams-Honda
Second	Stefan Johansson	Ferrari
Third	Michele Alboreto	Ferrari
Lap leaders

The 1985 Detroit Grand Prix was a Formula One motor race held on June 23, 1985, in Detroit, Michigan. It was the sixth round of the 1985 FIA Formula One World Championship and the fourth Detroit Grand Prix. The race was held over 63 laps of the four kilometre circuit for a total race distance of 260 kilometres.

For the first time in ten years, the United States hosted only one Grand Prix. Finland's Keke Rosberg (Williams FW10) took the lead from pole-sitter Ayrton Senna (Lotus 97T) on lap eight, avoided the tire and brake problems that plagued the other front-runners and held off the Ferrari 156/85s of Stefan Johansson and Michele Alboreto to win. Stefan Bellof earned a scintillating fourth place in his Tyrrell 012, scoring the last points for the legendary Cosworth-Ford DFV engine until 1988. It was the fourth Formula One Grand Prix victory for the 1982 World Champion. Alboreto's third place allowed him to expand his points lead over Lotus driver Elio de Angelis to seven points. Eventual 1985 World Champion Alain Prost was now nine points behind Alboreto and as far from the championship as he would get all year.