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The 1985 Detroit Grand Prix, otherwise known as the Detroit Grand Prix IV was the sixth race of the 1985 FIA Formula One World Championship, held on the 23 June 1985 on the Detroit Street Circuit.[1] The race was won by Keke Rosberg in a Williams-Honda, almost a minute ahead of the Ferrari duo of Stefan Johansson and Michele Alboreto.[1]

Regardless, the entry would be the same as it had been a week earlier in Canada, and would see Lotus-Renault claim pole position for the fifth straight race.[1] This time it was Ayrton Senna who topped the time sheets, with Nigel Mansell in the #5 Williams-Honda alongside.[1]

Senna would subsequently ace his start to sprint into the lead on raceday, while an equally impressive getaway saw Rosberg leap from fifth to second before the first corner.[1] The rest of the field would thunder into the first corner behind Mansell, while Championship leader Alboreto dropped out of the top six after a sluggish getaway.[1]

The opening laps suggested that the race would be dictated by tyres, with Senna's early pace soon deteriorating.[1] That allowed Rosberg to pass with little resistance on lap eight, prompting Senna to pit at the end of the lap for fresher, and harder, Goodyears.[1]

That left the two Williams-Hondas running one-two, while Alboreto moved through to third with an aggressive recovery drive.[1] Yet, a few laps after moving into the top three the Italian would begin to suffer from tyre grip and wear concerns, allowing Elio de Angelis to sneak through to third.[1]

A spin for Mansell on lap twenty would promote Alboreto back onto the podium, while de Angelis tried to catch the now out-of-sight Rosberg.[1] Mansell, meanwhile, would rejoin just ahead of Stefan Johansson, but soon fell behind the Swede as his tyres continued to struggle.[1]

Indeed, Mansell only lasted a few laps more until his race was ended by a spin, following Alain Prost's exit a few laps earlier.[1] Alboreto, meanwhile, would lose more and more pace with his wearing tyres and so slipped down the order, with Martin Brundle in the lowly Tyrrell-Ford Cosworth briefly running in third after de Angelis abandoned second for a new nose after contact with a backmarker.[1]

Unfortunately for Brundle he would be unable to escape Alboreto's attentions when the Italian finally found some pace, with the Ferrari easing past the Tyrrell without much issue.[1] Indeed, Brundle's glory run was to come to an end a few laps later when he smacked into Philippe Alliot, promoting teammate Stefan Bellof into fourth.[1]

The race looked to be settled from the that point, although Rosberg almost lost the lead when he pitted on lap 50 to have his radiators cleared.[1] Yet, he would manage to rejoin ahead of second placed Johansson and duly blasted clear, leaving the Swede in a relatively lonely second.[1]

With that the race was largely done, barring a late accident for Senna as he tried to challenge Alboreto for third, only to put himself into the wall.[1] Regardless, Rosberg swept home to claim a comfortable victory from Johansson and Alboreto, with Bellof, de Angelis and Nelson Piquet claiming the remaining points.[1]

BackgroundEdit

The Detroit Grand Prix of 1985 would be heralded by news of Ford agreeing to supply a new American entry with engines, namely the incoming Lola squad.[1] This new engine was to be turbocharged, with Ford again commissioning Cosworth to develop the engine as a replacement for the now out-dated DFV.[1] Indeed, while Ford had been heavily linked with the Zakspeed project, and had even reportedly supplied an L4 engine block, the American manufacturer were still reluctant to fully commit to an F1 project themselves, citing how expensive racing in F1 had become.[2]

Into the Championship, and victory in Canada had propelled Michele Alboreto back into the lead, the Italian ace having moved five points clear of Alain Prost in second. Indeed, for the second weekend in succession the Frenchman had ended the afternoon level on points with the driver in third, Elio de Angelis, but was considered to be ahead having picked up two wins. A significant twelve point gap then separated them from fourth placed Patrick Tambay, while Ayrton Senna had remained in fifth.

In the Constructors Championship Ferrari had dethroned Lotus-Renault in Canada, with the Scuderia's one-two in Montreal leaving them on 37 points. The Norfolk based squad, meanwhile, had moved onto 31 points, keeping them six ahead of defending Champions McLaren-TAG Porsche in third. Elsewhere Renault had held station in fourth and Williams-Honda had moved into fifth, with eight of F1's sixteen registered teams on the score board.

Entry ListEdit

The full entry list for the 1985 Detroit Grand Prix is outlined below:

No. Driver Entrant Constructor Chassis Engine Model Tyre
1 Austria Niki Lauda United Kingdom Marlboro McLaren International McLaren MP4/2B TAG Porsche TTE PO1 1.5 V6t G
2 France Alain Prost United Kingdom Marlboro McLaren International McLaren MP4/2B TAG Porsche TTE PO1 1.5 V6t G
3 United Kingdom Martin Brundle United Kingdom Tyrrell Racing Organisation Tyrrell 012 Ford Cosworth DFY 3.0 V8 G
4 Germany Stefan Bellof United Kingdom Tyrrell Racing Organisation Tyrrell 012 Ford Cosworth DFY 3.0 V8 G
5 United Kingdom Nigel Mansell United Kingdom Canon Williams Honda Team Williams FW10 Honda RA165E 1.5 V6t G
6 Finland Keke Rosberg United Kingdom Canon Williams Honda Team Williams FW10 Honda RA165E 1.5 V6t G
7 Brazil Nelson Piquet United Kingdom Motor Racing Developments Ltd. Brabham BT54 BMW M12/13 1.5 L4t P
8 Switzerland Marc Surer United Kingdom Motor Racing Developments Ltd. Brabham BT54 BMW M12/13 1.5 L4t P
9 Germany Manfred Winkelhock United Kingdom Skoal Bandit F1 Team RAM 03 Hart 415T 1.5 L4t P
10 France Philippe Alliot United Kingdom Skoal Bandit F1 Team RAM 03 Hart 415T 1.5 L4t P
11 Italy Elio de Angelis United Kingdom John Player Special Team Lotus Lotus 97T Renault EF4 1.5 V6t G
12 Brazil Ayrton Senna United Kingdom John Player Special Team Lotus Lotus 97T Renault EF4 1.5 V6t G
15 France Patrick Tambay France Equipe Renault Elf Renault RE60 Renault EF4B 1.5 V6t G
16 United Kingdom Derek Warwick France Equipe Renault Elf Renault RE60 Renault EF4B 1.5 V6t G
17 Austria Gerhard Berger United Kingdom Barclay Arrows BMW Arrows A8 BMW M12/13 1.5 L4t G
18 Belgium Thierry Boutsen United Kingdom Barclay Arrows BMW Arrows A8 BMW M12/13 1.5 L4t G
19 Italy Teo Fabi United Kingdom Toleman Group Motorsport Toleman TG185 Hart 415T 1.5 L4t P
21 Canada Allen Berg United Kingdom Spirit Enterprises Ltd. Spirit 101D Hart 415T 1.5 L4t P
22 Italy Riccardo Patrese Italy Benetton Team Alfa Romeo Alfa Romeo 185T Alfa Romeo 890T 1.5 V8t G
23 United States Eddie Cheever Italy Benetton Team Alfa Romeo Alfa Romeo 185T Alfa Romeo 890T 1.5 V8t G
24 Italy Piercarlo Ghinzani Italy Osella Squadra Corse Osella FA1F Alfa Romeo 890T 1.5 V8t P
25 Italy Andrea de Cesaris France Equipe Ligier Gitanes Ligier JS25 Renault EF4B 1.5 V6t P
26 France Jacques Laffite France Equipe Ligier Gitanes Ligier JS25 Renault EF4B 1.5 V6t P
27 Italy Michele Alboreto Italy Scuderia Ferrari SpA SEFAC Ferrari 156/85 Ferrari 031 1.5 V6t G
28 Sweden Stefan Johansson Italy Scuderia Ferrari SpA SEFAC Ferrari 156/85 Ferrari 031 1.5 V6t G
29 Italy Pierluigi Martini Italy Minardi Team SpA Minardi M185 Motori Moderni 615-90 1.5 V6t P
Source:[3]

Practice OverviewEdit

QualifyingEdit

Friday QualifyingEdit

Saturday QualifyingEdit

Qualifying ResultsEdit

The full qualifying results for the 1985 Detroit Grand Prix are outlined below:

Pos. No. Driver Constructor Time Gap
Q1 Q2
1 12 Brazil Ayrton Senna United Kingdom Lotus-Renault 1:42.051
2 5 United Kingdom Nigel Mansell United Kingdom Williams-Honda 1:43.249 +1.198s
3 27 Italy Michele Alboreto Italy Ferrari 1:43.748 +1.697s
4 2 France Alain Prost United Kingdom McLaren-TAG Porsche 1:44.088 +2.037s
5 6 Finland Keke Rosberg United Kingdom Williams-Honda 1:44.156 +2.105s
6 16 United Kingdom Derek Warwick France Renault 1:44.163 +2.112s
7 23 United States Eddie Cheever Italy Alfa Romeo 1:44.231 2:05.540 +2.180s
8 11 Italy Elio de Angelis United Kingdom Lotus-Renault 1:44.769 +2.718s
9 28 Sweden Stefan Johansson Italy Ferrari 1:44.921 +2.870s
10 7 Brazil Nelson Piquet United Kingdom Brabham-BMW 1:45.194 +3.143s
11 8 Switzerland Marc Surer United Kingdom Brabham-BMW 1:45.979 +3.928s
12 1 Austria Niki Lauda United Kingdom McLaren-TAG Porsche 1:46.266 +4.215s
13 19 Italy Teo Fabi United Kingdom Toleman-Hart 1:46.546 +4.495s
14 22 Italy Riccardo Patrese Italy Alfa Romeo 1:46.592 +4.541s
15 15 France Patrick Tambay France Renault 1:47.028 +4.977s
16 26 France Jacques Laffite France Ligier-Renault 1:47.267 +5.216s
17 25 Italy Andrea de Cesaris France Ligier-Renault 1:47.393 2:12.268 +5.342s
18 3 United Kingdom Martin Brundle United Kingdom Tyrrell-Ford Cosworth 1:47.563 +5.512s
19 4 West Germany Stefan Bellof United Kingdom Tyrrell-Ford Cosworth 1:47.911 +5.860s
20 9 West Germany Manfred Winkelhock United Kingdom RAM-Hart 1:47.926 +5.875s
21 18 Belgium Thierry Boutsen United Kingdom Arrows-BMW 1:48.023 +5.978s
22 24 Italy Piercarlo Ghinzani Italy Osella-Alfa Romeo 1:48.546 2:11.268 +6.495s
23 10 France Philippe Alliot United Kingdom RAM-Hart 1:50.455 2:24.814 +8.404s
24 17 Austria Gerhard Berger United Kingdom Arrows-BMW 2:05.387 +23.336s
25 29 Italy Pierluigi Martini Italy Minardi-Motori Moderni 3:04.446 +1:22.395
WD* 21 Canada Allen Berg United Kingdom Spirit-Hart Withdrawn
Source:[4][5][6]
  • 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.
  • * Berg's entry was withdrawn after an issue with his registration.[7]

GridEdit

Pos Pos
Driver Driver
______________
Row 1 1 ______________
Ayrton Senna 2
______________ Nigel Mansell
Row 2 3 ______________
Michele Alboreto 4
______________ Alain Prost
Row 3 5 ______________
Keke Rosberg 6
______________ Derek Warwick
Row 4 7 ______________
Eddie Cheever 8
______________ Elio de Angelis
Row 5 9 ______________
Stefan Johansson 10
______________ Nelson Piquet
Row 6 11 ______________
Marc Surer 12
______________ Niki Lauda
Row 7 13 ______________
Teo Fabi 14
______________ Riccardo Patrese
Row 8 15 ______________
Patrick Tambay 16
______________ Jacques Laffite
Row 9 17 ______________
Andrea de Cesaris 18
______________ Martin Brundle
Row 10 19 ______________
Stefan Bellof 20
______________ Manfred Winkelhock
Row 11 21 ______________
Thierry Boutsen 22
______________ Piercarlo Ghinzani
Row 12 23 ______________
Philippe Alliot 24
______________ Gerhard Berger
Row 13 25 ______________
Pierluigi Martini 26
______________

RaceEdit

ReportEdit

ResultsEdit

The full results for the 1985 Detroit Grand Prix are outlined below:

Pos. No. Driver Constructor Laps Time/Retired Grid Points
1 6 Finland Keke Rosberg United Kingdom Williams-Honda 63 1:55:39.851 5 9
2 28 Sweden Stefan Johansson Italy Ferrari 63 + 57.549s 9 6
3 27 Italy Michele Alboreto Italy Ferrari 63 + 1:03.170 3 4
4 4 West Germany Stefan Bellof United Kingdom Tyrrell-Ford Cosworth 63 + 1:06.225 19 3
5 11 Italy Elio de Angelis United Kingdom Lotus-Renault 63 + 1:26.966 8 2
6 7 Brazil Nelson Piquet United Kingdom Brabham-BMW 62 + 1 Lap 10 1
7 18 Belgium Thierry Boutsen United Kingdom Arrows-BMW 62 + 1 Lap 21
8 8 Switzerland Marc Surer United Kingdom Brabham-BMW 62 + 1 Lap 11
9 23 United States Eddie Cheever Italy Alfa Romeo 61 + 2 Laps 7
10 25 Italy Andrea de Cesaris France Ligier-Renault 61 + 2 Laps 17
11 17 Austria Gerhard Berger United Kingdom Arrows-BMW 60 + 3 Laps 24
12 26 France Jacques Laffite France Ligier-Renault 58 + 5 Laps 16
Ret 12 Brazil Ayrton Senna United Kingdom Lotus-Renault 51 Accident 1
Ret 3 United Kingdom Martin Brundle United Kingdom Tyrrell-Ford Cosworth 30 Collision 18
Ret 10 France Philippe Alliot United Kingdom RAM-Hart 27 Collision 23
Ret 5 United Kingdom Nigel Mansell United Kingdom Williams-Honda 26 Accident 2
Ret 2 France Alain Prost United Kingdom McLaren-TAG Porsche 19 Brakes 4
Ret 22 Italy Riccardo Patrese Italy Alfa Romeo 19 Electrical 14
Ret 16 United Kingdom Derek Warwick France Renault 18 Transmission 6
Ret 15 France Patrick Tambay France Renault 15 Accident 15
Ret 29 Italy Pierluigi Martini Italy Minardi-Motori Moderni 11 Engine 25
Ret 1 Austria Niki Lauda United Kingdom McLaren-TAG Porsche 10 Brakes 12
Ret 19 Italy Teo Fabi United Kingdom Toleman-Hart 4 Clutch 13
Ret 9 West Germany Manfred Winkelhock United Kingdom RAM-Hart 3 Turbo 20
Ret 24 Italy Piercarlo Ghinzani Italy Osella-Alfa Romeo 0 Accident 22
WD 21 Canada Allen Berg United Kingdom Spirit-Hart
Source:[7]
  • T Indicates a driver used their test/spare car.

MilestonesEdit

StandingsEdit

Michele Alboreto retained the lead in the Championship as a result of the Detroit Grand Prix, and even managed to grow his advantage to seven points. Elio de Angelis, meanwhile, had moved into a clear second ahead of Alain Prost, while Stefan Johansson moved into fourth after his second second place in two races. Keke Rosberg, meanwhile, would leap into the top five after claiming victory, while double World Champion Nelson Piquet was finally on the board, albeit down in sixteenth.

In the Constructors' Championship it was still Ferrari who led the charge, ending the weekend on 47 points. Indeed, the Scuderia had managed to extend their lead over Lotus-Renault with a double podium finish, opening a fourteen point gap between themselves and their Norfolk based challengers. Behind, McLaren-TAG Porsche had retained third ahead of Williams-Honda, while Brabham-BMW appeared at the foot of the scorers' list in ninth.

World Championship for Drivers
Pos. Driver Pts. +/-
1 Italy Michele Alboreto 31
2 Italy Elio de Angelis 24 ▲1
3 France Alain Prost 22 ▼1
4 Sweden Stefan Johansson 13 ▲2
5 Finland Keke Rosberg 12 ▲4
6 France Patrick Tambay 10 ▼2
7 Brazil Ayrton Senna 9 ▼2
8 Belgium Thierry Boutsen 6 ▼1
9 United Kingdom Nigel Mansell 5 ▼1
10 West Germany Stefan Bellof 4 ▲5
11 Austria Niki Lauda 3 ▼1
12 Italy Andrea de Cesaris 3 ▼1
13 France René Arnoux 3 ▼1
14 United Kingdom Derek Warwick 2 ▼1
15 France Jacques Laffite 2 ▼1
16 Brazil Nelson Piquet 1
World Championship for Manufacturers
Pos. Team Pts. +/-
1 Italy Ferrari 47
2 United Kingdom Lotus-Renault 33
3 United Kingdom McLaren-TAG Porsche 25
4 United Kingdom Williams-Honda 17 ▲1
5 France Renault 12 ▼1
6 United Kingdom Arrows-BMW 6
7 France Ligier-Renault 5
8 United Kingdom Tyrrell-Ford Cosworth 4
9 United Kingdom Brabham-BMW 1

Only point scoring drivers and constructors are shown.

ReferencesEdit

Images and Videos:

References:

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 'United States GP, 1985', grandprix.com, (Inside F1 Inc., 2015), http://www.grandprix.com/gpe/rr410.html, (Accessed 24/03/2019)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 '6. USA 1985', statsf1.com, (Stats F1, 2014), https://www.statsf1.com/en/1985/etats-unis.aspx, (Accessed 24/03/2019)
  3. 'USA 1985: Entrants', statsf1.com, (Stats F1, 2015), https://www.statsf1.com/en/1985/etats-unis/engages.aspx, (Accessed 24/03/2019)
  4. '1985 Detroit Grand Prix IV - QUALIFYING 1', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1985/races/487/detroit/qualifying-1.html, (Accessed 24/03/2019)
  5. '1985 Detroit Grand Prix IV - QUALIFYING 2', formula1.com, (Formula One World Championship Ltd., 2019), https://www.formula1.com/en/results.html/1985/races/487/detroit/qualifying-2.html, (Accessed 24/03/2019)
  6. 'USA 1985: Qualifications', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1985/etats-unis/qualification.aspx, (Accessed 24/03/2019)
  7. 7.0 7.1 'USA 1985: Result', statsf1.com, (Stats F1, 2016), https://www.statsf1.com/en/1985/etats-unis/classement.aspx, (Accessed 24/03/2019)
  8. 8.0 8.1 '1985 Detroit GP', chicanef1.com, (Chicane F1, 2015), http://www.chicanef1.com/racetit.pl?year=1985&gp=Detroit%20GP&r=1, (Accessed 24/03/2019)
V T E 1985 Formula One Season
Teams McLaren • Tyrrell • Williams • Brabham • RAM • Lotus • Renault • Arrows • Toleman • Spirit • Alfa Romeo • Osella • Ligier • Ferrari • Minardi • Zakspeed • Lola
Engines Alfa Romeo • BMW • Ferrari • Ford • Hart • Honda • Motori Moderni • Renault • TAG • Zakspeed
Drivers Lauda • 2 Prost • 3/4 Brundle • 4 Johansson • 3/4 Bellof • 4 Capelli • 4 Streiff • 5 Mansell • 6 Rosberg • 7 Piquet • 8 Hesnault • 8 Surer • 9 Winkelhock • 9/10 Alliot • 10 Acheson • 11 De Angelis • 12 Senna • 14 Hesnault • 15 Tambay • 16 Warwick • 17 Berger • 18 Boutsen • 19 Fabi • 20 Ghinzani • 21 Baldi • 22 Patrese • 23 Cheever • 24 Ghinzani • 24 Rothengatter • 25 De Cesaris • 25 Streiff • 26 Laffite • 27 Alboreto • 28 Arnoux • 28 Johansson • 29 Martini • 30 Palmer • 30 Danner • 33 Jones
Cars McLaren MP4/2B • Ferrari 156/85 • Williams FW10 • Lotus 97T • Brabham BT54 • Ligier JS25 • Renault RE60 • Arrows A8 • Tyrrell 012 • Tyrrell 014 • Osella FA1F • Minardi M185 • Alfa Romeo 184TB • Alfa Romeo 185T • RAM 03 • Zakspeed 841 • Toleman TG185 • Spirit 101D • Lola THL1
Tyres Goodyear • Pirelli
Races Brazil • Portugal • San Marino • Monaco • Canada • Detroit • France • Britain • Germany • Austria • Netherlands • Italy • Belgium • Europe • South Africa • Australia
See also 1984 Formula One Season • 1986 Formula One Season • Category

Template:Detroit Grand Prix

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