1986 Detroit Grand Prix

The Detroit Grand Prix V, otherwise known as the 1986 Detroit Grand Prix (and unofficially as the 1986 United States Grand Prix), was the seventh round of the FIA Formula One World Championship, staged at the Detroit Street Circuit on the 22 June 1986.'United States GP, 1986', grandprix.com, (Inside F1 Inc., 2015), http://www.grandprix.com/gpe/rr427.html, (Accessed 24/03/2019) The race would see Ayrton Senna claim a memorable victory for , recovering from an early puncture to beat Jacques Laffite.
Qualifying would see the aforementioned Brazilian grab pole position, ahead of Nigel Mansell and Nelson Piquet. René Arnoux was next in the first of the s, with Stefan Johansson and Laffite sharing the third row.
It was Senna's lead to lose at the start, with the #12 Lotus duly streaking away to leave Mansell to defend from Arnoux. The rest of the field thundered into the first corner behind them, with no major collisions to thin the field.
Senna was not able to escape however, and duly lost the lead early on the second lap when he missed a gear. Indeed, Senna would spend the rest of the lap trying to keep Arnoux at bay, before re-catching and passing Mansell when the Brit's brakes began to fade.
Yet, before the Brazilian could even establish himself in the lead a stray piece of debris would puncture a tyre, forcing him to pit at the end of lap twelve. That handed the lead to the two Ligier-Renaults, Arnoux ahead of Laffite, whom had overtaken Mansell as pilot continued to struggle with his brakes.
Laffite duly took the lead a couple of laps later, and would continue to do so until the now familiar stop for tyres mid-race. There, Ligier's lack of funding for pitcrews was made abundantly clear, with Laffite and Arnoux losing so much time in the pits that they became a non-factor.
Furthermore, with Piquet enduring a slow stop and Williams taking time to analyse Mansell's brake issues, Senna was able to filter back into the lead, with no need to stop again. Piquet duly led the chase from Arnoux, although a collision between the two, which also involved Thierry Boutsen would ultimately leave Senna to cruise out front for the rest of the race.
With that the race was run, with Senna claiming victory and the lead in the Championship ahead of Laffite. Former Championship leader Alain Prost claimed third after developing a late misfire, with Michele Alboreto, Mansell, and Riccardo Patrese securing the rest of the points.
==Background==
Alain Prost had moved back to the top of the Championship hunt after the Canadian Grand Prix, establishing a small two point advantage. Nigel Mansell and Ayrton Senna were next and level on 27 points, although the Brit was considered to be ahead by virtue of his two wins to the Brazilian's one. Nelson Piquet, meanwhile, had lost ground in fourth after the battle of Montreal, but remained ahead of Keke Rosberg, with no further changes further down the field.
In the Constructors' Championship it was advantage upon arrival in Detroit, with their double podium in Canada having put them back ahead of . Those two had ended the Canadian weekend some three points apart, before a significant sixteen point gap back to third placed . The Ethel based squad themselves seemed to be in a secure position, holding more than double the points of fourth placed at the start of Detroit meeting, while arrived in fifth.
===Entry list===
The full entry list for the is outlined below:
No. 	Driver 	Entrant 	Constructor 	Chassis 	Engine 	Model 	Tyre
1 	Alain Prost 	Marlboro McLaren International 	 	MP4/2C 	 	TTE PO1 1.5 V6t 	
2 	Keke Rosberg 	Marlboro McLaren International 	 	MP4/2C 	 	TTE PO1 1.5 V6t 	
3 	Martin Brundle 	Data General Team Tyrrell 	 	015 	 	EF15 1.5 V6t 	
4 	Philippe Streiff 	Data General Team Tyrrell 	 	014 	 	EF15 1.5 V6t 	
5 	Nigel Mansell 	Canon Williams Honda Team 	 	FW11 	 	RA166E 1.5 V6t 	
6 	Nelson Piquet 	Canon Williams Honda Team 	 	FW11 	 	RA166E 1.5 V6t 	
7 	Riccardo Patrese 	Motor Racing Developments Ltd. 	 	BT55 	 	M12/13 1.5 L4t 	
8 	Derek Warwick 	Motor Racing Developments Ltd. 	 	BT55 	 	M12/13 1.5 L4t 	
11 	Johnny Dumfries 	John Player Special Team Lotus 	 	98T 	 	EF15B 1.5 V6t 	
12 	Ayrton Senna 	John Player Special Team Lotus 	 	98T 	 	EF15B 1.5 V6t 	
14 	Jonathan Palmer 	West Zakspeed Racing 	 	861 	 	1500/4 1.5 L4t 	
15 	Alan Jones 	Team Haas (USA) Ltd. 	 	THL2 	 	GBA 1.5 V6t 	
16 	Eddie Cheever 	Team Haas (USA) Ltd. 	 	THL2 	 	GBA 1.5 V6t 	
17 	Christian Danner 	Barclay Nordica Arrows BMW 	 	A8 	 	M12/13 1.5 L4t 	
18 	Thierry Boutsen 	Barclay Nordica Arrows BMW 	 	A8 	 	M12/13 1.5 L4t 	
19 	Teo Fabi 	Benetton Formula Ltd. 	 	B186 	 	M12/13 1.5 L4t 	
20 	Gerhard Berger 	Benetton Formula Ltd. 	 	B186 	 	M12/13 1.5 L4t 	
21 	Piercarlo Ghinzani 	Osella Squadra Corse 	 	FA1F 	 	890T 1.5 L4t 	
22 	Allen Berg 	Osella Squadra Corse 	 	FA1G 	 	890T 1.5 L4t 	
23 	Andrea de Cesaris 	Minardi F1 Team 	 	M185B 	 	615-90 1.5 V6t 	
24 	Alessandro Nannini 	Minardi F1 Team 	 	M185B 	 	615-90 1.5 V6t 	
25 	René Arnoux 	Equipe Ligier 	 	JS27 	 	EF4B 1.5 V6t 	
26 	Jacques Laffite 	Equipe Ligier 	 	JS27 	 	EF15 1.5 V6t 	
27 	Michele Alboreto 	Scuderia Ferrari SpA SEFAC 	 	F186 	 	032 1.5 V6t 	
28 	Stefan Johansson 	Scuderia Ferrari SpA SEFAC 	 	F186 	 	032 1.5 V6t 	
29 	Huub Rothengatter 	West Zakspeed Racing 	 	861 	 	1500/4 1.5 L4t 	
Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1986/etats-unis/engages.aspx, (Accessed 28/03/2019)
==Practice Overview==
==Qualifying==
===Friday Qualifying===
===Saturday Qualifying===
===Qualifying Results===
The full qualifying results for the are outlined below:
Pos. 	No. 	Driver 	Constructor 	Time 	Time 	Gap
Pos. 	No. 	Driver 	Constructor 	Q1 	Q2 	Gap
1 	12 	Ayrton Senna 	 	1:40.301 	1:38.301 	—
2 	5 	Nigel Mansell 	 	1:39.490 	1:38.839 	+0.538s
3 	6 	Nelson Piquet 	 	1:41.510 	1:39.076 	+0.775s
4 	25 	René Arnoux 	 	1:43.166 	1:39.689 	+1.388s
5 	28 	Stefan Johansson 	 	1:42.989 	1:40.312 	+2.011s
6 	26 	Jacques Laffite 	 	1:45.236 	1:40.676 	+2.375s
7 	1 	Alain Prost 	 	1:43.368 	1:40.715 	+2.414s
8 	7 	Riccardo Patrese 	 	1:43.664 	1:40.819 	+2.518s
9 	2 	Keke Rosberg 	 	1:43.732 	1:40.848 	+2.547s
10 	16 	Eddie Cheever 	 	1:46.499 	1:41.540 	+3.239s
11 	27 	Michele Alboreto 	 	1:44.296 	1:41.606 	+3.305s
12 	20 	Gerhard Berger 	 	1:43.759 	1:41.836 	+3.535s
13 	18 	Thierry Boutsen 	 	1:45.711 	1:42.279 	+3.978s
14 	11 	Johnny Dumfries 	 	1:45.846 	1:42.511 	+4.210s
15 	8 	Derek Warwick 	 	1:44.890 	1:42.558 	+4.257s
16 	3 	Martin Brundle 	 	1:45.250 	1:42.815 	+4.514s
17 	19 	Teo Fabi 	 	1:48.912 	1:43.658 	+5.357s
18 	4 	Philippe Streiff 	 	1:47.478 	1:43.796 	+5.495s
19 	17 	Christian Danner 	 	1:48.855 	1:44.259 	+5.958s
20 	14 	Jonathan Palmer 	 	1:49.812 	1:44.401 	+6.100s
21 	15 	Alan Jones 	 	1:45.521 	1:44.450 	+6.149s
22 	21 	Piercarlo Ghinzani 	 	1:49.067 	1:45.059 	+6.887s
23 	23 	Andrea de Cesaris 	 	1:47.359 	1:46.705 	+8.404s
24 	24 	Alessandro Nannini 	 	1:47.230 	11:12.906 	+8.929s
25 	22 	Allen Berg 	 	1:56.741 	1:48.682 	+10.381s
26 	29 	Huub Rothengatter 	 	1:49.680 	29:44.015 	+11.379s
Source:'Detroit Grand Prix V - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-1.html, (Accessed 28/03/2019)'Detroit Grand Prix V - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-2.html, (Accessed 28/03/2019)'USA 1986: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/qualification.aspx, (Accessed 28/03/2019)	Source:'Detroit Grand Prix V - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-1.html, (Accessed 28/03/2019)'Detroit Grand Prix V - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-2.html, (Accessed 28/03/2019)'USA 1986: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/qualification.aspx, (Accessed 28/03/2019)	Source:'Detroit Grand Prix V - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-1.html, (Accessed 28/03/2019)'Detroit Grand Prix V - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-2.html, (Accessed 28/03/2019)'USA 1986: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/qualification.aspx, (Accessed 28/03/2019)	Source:'Detroit Grand Prix V - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-1.html, (Accessed 28/03/2019)'Detroit Grand Prix V - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-2.html, (Accessed 28/03/2019)'USA 1986: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/qualification.aspx, (Accessed 28/03/2019)	Source:'Detroit Grand Prix V - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-1.html, (Accessed 28/03/2019)'Detroit Grand Prix V - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-2.html, (Accessed 28/03/2019)'USA 1986: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/qualification.aspx, (Accessed 28/03/2019)	Source:'Detroit Grand Prix V - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-1.html, (Accessed 28/03/2019)'Detroit Grand Prix V - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-2.html, (Accessed 28/03/2019)'USA 1986: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/qualification.aspx, (Accessed 28/03/2019)	Source:'Detroit Grand Prix V - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-1.html, (Accessed 28/03/2019)'Detroit Grand Prix V - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1986/races/504/detroit/qualifying-2.html, (Accessed 28/03/2019)'USA 1986: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/qualification.aspx, (Accessed 28/03/2019)
*T Indicates a driver used their test/spare car to set their best time in that session.
*Bold indicates a driver's best/qualifying time.
===Grid===
** Rothengatter was unable to start the race after an electrical failure.
==Race==
===Report===
===Results===
The full results for the are outlined below:
Pos. 	No. 	Driver 	Constructor 	Laps 	Time/Retired 	Grid 	Points
1 	12 	Ayrton Senna 	 	63 	1:51:12.847 	1 	9
2 	26 	Jacques Laffite 	 	63 	+ 31.017s 	6 	6
3 	1 	Alain Prost 	 	63 	+ 31.824s 	7 	4
4 	27 	Michele Alboreto 	 	63 	+ 1:30.936 	11 	3
5 	5 	Nigel Mansell 	 	62 	+ 1 Lap 	2 	2
6 	7 	Riccardo Patrese 	 	62 	+ 1 Lap 	8 	1
7 	11 	Johnny Dumfries 	 	61 	+ 2 Laps 	14 	
8 	14 	Jonathan Palmer 	 	61 	+ 2 Laps 	20 	
9 	4 	Philippe Streiff 	 	61 	+ 2 Laps 	18 	
10 	8 	Derek Warwick 	 	60 	+ 3 Laps 	15 	
Ret 	17 	Christian Danner 	 	51 	Electrical 	19 	
Ret 	25 	René Arnoux 	 	46 	Accident 	4 	
Ret 	18 	Thierry Boutsen 	 	44 	Accident 	13 	
Ret 	23 	Andrea de Cesaris 	 	43 	Gearbox 	23 	
Ret 	6 	Nelson Piquet 	 	41 	Accident 	3 	
Ret 	28 	Stefan Johansson 	 	40 	Electrical 	5 	
Ret 	19 	Teo Fabi 	 	38 	Gearbox 	17 	
Ret 	16 	Eddie Cheever 	 	37 	Steering 	10 	
Ret 	15 	Alan Jones 	 	33 	Steering 	21 	
Ret 	22 	Allen Berg 	 	28 	Electrical 	25 	
Ret 	3 	Martin Brundle 	 	15 	Electrical 	16 	
Ret 	21 	Piercarlo Ghinzani 	 	14 	Turbo 	22 	
Ret 	2 	Keke Rosberg 	 	12 	Transmission 	9 	
Ret 	20 	Gerhard Berger 	 	8 	Engine 	12 	
Ret 	24 	Alessandro Nannini 	 	3 	Turbo 	24 	
DNS* 	29 	Huub Rothengatter 	 	 	 	 	
Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)	Source:'USA 1986: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1986/etats-unis/classement.aspx, (Accessed 28/03/2019)
*T Indicates a driver used their test/spare car.
** Rothengatter was unable to start after an electrical failure.
==Milestones==
* appeared at their 400th Grand Prix as a constructor.'7. USA 1985', statsf1.com, (Stats F1, 2014), https://www.statsf1.com/en/1986/etats-unis.aspx, (Accessed 28/03/2019)
* Debut race for Allen Berg.'1986 Detroit GP', chicanef1.com, (Chicane F1, 2015), http://www.chicanef1.com/racetit.pl?year=1986&gp=Detroit%20GP&r=1, (Accessed 28/03/2019)
* Fourth career victory for Ayrton Senna.
* secured their 77th victory as a constructor.
** Twentieth win for as an engine supplier.
* Jacques Laffite claimed his 32nd and final podium finish.
* Nelson Piquet recorded the 25th fastest lap for a car using Mobil as a lubricant supplier.
==Standings==
Victory in Detroit would propel Ayrton Senna back into the lead of the Championship, with the Brazilian opening out a three point lead over Alain Prost. Furthermore, with Nigel Mansell just four points further back in third, it seemed as if it would be a three way fight for the Championship, with all three drivers holding two wins across the first seven races. Behind, Nelson Piquet was ten points off his third placed teammate, with Keke Rosberg even further back in fifth.
It was a similar picture the Constructors Championship, with and ending the Detroit weekend just a point apart. It was the Anglo-Japanese combination, rather than the Anglo-German alliance that led, before an eleven point gap back to third placed . Indeed, the Ethel based squad were also in the hunt for the crown, provided that second driver Johnny Dumfries became a regular scorer, leaving in an increasingly distant fourth.
 
World Championship for Drivers	World Championship for Drivers	World Championship for Drivers	World Championship for Drivers
Pos. 	Driver 	Pts. 	+/-
1 	Ayrton Senna 	36 	2
2 	Alain Prost 	33 	1
3 	Nigel Mansell 	29 	1
4 	Nelson Piquet 	19 	
5 	Keke Rosberg 	14 	
6 	Jacques Laffite 	13 	1
7 	Stefan Johansson 	7 	1
8 	Gerhard Berger 	6 	
9 	Michele Alboreto 	6 	1
10 	René Arnoux 	6 	1
11 	Teo Fabi 	2 	
12 	Martin Brundle 	2 	
13 	Riccardo Patrese 	2 	
World Championship for Constructors	World Championship for Constructors	World Championship for Constructors	World Championship for Constructors
Pos. 	Team 	Pts. 	+/-
1 	 	48 	
2 	 	47 	
3 	 	36 	
4 	 	19 	
5 	 	13 	
6 	 	8 	
7 	 	2 	
8 	 	2 	
Only point scoring drivers and constructors are shown.
==References==
Images and Videos:
* 
References:
Category:Grand Prix articles
Category:Grand Prix articles
Category:1986 Grands Prix
Category:Detroit Grand Prix
Category:Formula One races in the United States