1986 United States Grand Prix East

Infobox Grand Prix race report
Type = F1
Country = United States
Grand Prix = United States
GP_Suffix = East
Official name = 5th United States Grand Prix East
Date = June 22
Year = 1986
Race_No = 7
Season_No = 17
Location = Detroit street circuit
Detroit, Michigan
Course = Temporary street course
Course_mi = 2.56
Course_km = 4.120
Distance_laps = 63
Distance_mi = 161.28
Distance_km = 259.56
Weather = Cloudy, hot
Pole_Driver = flagicon|Brazil Ayrton Senna
Pole_Team = Lotus-Renault
Pole_Time = 1:38.301
Fast_Driver = flagicon|Brazil Nelson Piquet
Fast_Team = Williams-Honda
Fast_Time = 1:41.233
Fast_L

First_Driver = flagicon|Brazil Ayrton Senna
First_Team = Lotus-Renault
Second_Driver = flagicon|France Jacques Laffite
Second_Team = Ligier-Renault
Third_Driver = flagicon|France Alain Prost
Third_Team = McLaren-Porsche

The 1986 United States Grand Prix East was a Formula One race held on June 22, 1986 in Detroit, Michigan. This event was also referred to as the Detroit Grand Prix.

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ummary

Rising Lotus star Ayrton Senna started on the pole and came away with a hard-earned win, the fourth of his career. The young Brazilian charged through the field after dropping to eighth with a deflating tire for his first USGP victory. The race saw six lead changes among five drivers, and the victory for Senna began a streak that would see him take five United States Grand Prix wins in six years.

American Eddie Cheever, in his only F1 race of the season, was taking Patrick Tambay's seat in the Carl Haas Lola, as Tambay had not fully recovered from his Montreal injuries. Haas had attempted to get the legendary Mario Andretti, but, apparently because of a FISA-CART feud, Andretti's application for a FISA license was denied. Cheever qualified tenth, and retired at just over half-distance with a broken wheel peg.

As expected, the drivers had difficulty finding grip in Friday's sessions, as the temporary street circuit needed time to get some rubber down. Williams driver Nigel Mansell was the only one under 1:40, putting in two outstanding laps on race tires. On a gorgeous Saturday, Mansell and Senna bided their time, waiting until halfway through the one-hour session to take the track. Senna came out on qualifiers, managed to get a clear track, and clocked a course record 1:38.301. Mansell was balked on his run on the fragile qualifying tires when Alain Prost crashed in the chicane, and Senna had the pole by more than half a second.

Sunday was hot and humid with a chance of rain. At the start, Senna led Mansell into the first corner, and René Arnoux's Ligier jumped ahead of Nelson Piquet in the second Williams.

:LAP 1: First: "Senna" Second: "Mansell" Third: "Arnoux"

Beginning lap 3, the Brazilian missed a gear entering Turn One, and Mansell's Williams shot by into the lead.

:LAP 3: First: "Mansell" Second: "Senna" Third: "Arnoux"

By the end of lap 5, Mansell's lead was 4.3 seconds, but that was as big as it got. His rear brake pads were too cool and had become glazed, and Senna was able to draw back up to him. By lap seven, he was right on his gearbox, and on lap 8, he retook the lead.

:LAP 8: First: "Senna" Second: "Mansell" Third: "Arnoux"

Senna immediately began to draw away, while Mansell slipped back through the field. On lap 14, with a 6.5 second lead, Senna suddenly ducked into the pits with a slowly deflating right rear tire. Despite a quick change, he re-entered in eighth place, twenty seconds behind the new leader, René Arnoux.

:LAP 15: First: "Arnoux" Second: "Laffite" Third: "Piquet"

Arnoux held the lead for just three laps before having to pit for new rubber. His Ligier teammate Jacques Laffite, running with harder compound Pirelli rear tires, moved to the top of the score sheet. At age 42, it was Laffite's first time to lead a race in more than three years,and the last time in his career.

:LAP 18: First: "Laffite" Second: "Piquet" Third: "Mansell"

After his stop on lap 14, Senna had begun to carve his way back to the front, overtaking, not back markers, but the best drivers of the era. He passed Michele Alboreto on lap 15, Stefan Johansson on lap 17, Arnoux when he made his tire stop on lap 18, Prost on lap 28, and Mansellon lap 31. When Laffite also stopped for tires on lap 31, Piquet became the race's fifth different leader, and Senna was up to second place, just 1.7 seconds behind.

:LAP 31: First: "Piquet" Second: "Senna" Third: "Mansell"

With the two of them in front on their own, and Piquet leading by up to 3.5 seconds, Senna was content for the time being to follow his countryman. After eight laps in the lead, Piquet pitted for tires, and Senna regained first place.

:LAP 40: First: "Senna" Second: "Piquet" Third: "Arnoux"

Piquet's 18.4 second stop was even slower than teammate Mansell's had been, but when he returned to the track, the two-time champion got the bit between his teeth. Running second behind Senna, Piquet set the fastest lap of the race on lap 41, but with a pit stop ten seconds quicker than Piquet's, Senna was able to retain the lead.

"On the very next lap, the 42nd, Piquet pushed a bit too much, and crashed hard at the left-hand corner before the last chicane. He ended up in the tire barrier, unhurt, but with his car in a very precarious position. The crane, present for just that reason, was unable to move the car. Arnoux, now 16.6 seconds behind in second, took a second a lap off Senna's lead for five laps while a yellow was displayed in the corner where Piquet had crashed. As soon as the yellow flag was gone, Arnoux went wide and hit Piquet's abandoned Williams! The Frenchman decided that his car was not damaged, and attempted to rejoin the field, but did so right in front of Thierry Boutsen's Arrows, sidelining both cars."

Very uncharacteristic of a street race, these threendash Piquet, Arnoux and Boutsenndash were the only drivers all afternoon to retire due to accidents.

With 17 laps to go, Senna led Prost by 27 seconds, and the McLaren's Porsche engine was cutting out under braking. Laffite was able to close as Prost struggled, and quickly the Ligier moved by into second place. Senna came home 30 seconds in front for a brilliant and hard-earned win, his first in the United States, and the only American win for the great French engine maker Renault.

Classification

F1 race report
Name_of_race = United States Grand Prix East
Year_of_race = 1986
Previous_race_in_season = 1986 Canadian Grand Prix
Next_race_in_season = 1986 French Grand Prix
Previous_year's_race = 1985 United States Grand Prix East
Next_year's_race = 1987 United States Grand Prix East

References

* Rob Walker (October, 1986). "5th Detroit Grand Prix: Front And Senna". "Road & Track", 130-132.