McLaren MP4/5

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McLaren MP4/5
McLaren MP4/5B

1989 MP4/5 chassis
Category	Formula One
Constructor	McLaren International (chassis) Honda Racing F1 (engine)
Designer(s)	Gordon Murray (Technical Director) Neil Oatley (Chief Designer) Mike Gascoyne (Head of Aerodynamics) Osamu Goto (Engine Technical Director (Honda))
Predecessor	MP4/4
Successor	MP4/6
Technical specifications[1]
Chassis	Carbon fibre and Kevlar monocoque
Suspension (front)	Double wishbones, pull-rod actuated coil springs and dampers
Suspension (rear)	Double wishbones, rocker-arm actuated coil springs and dampers
Axle track	Front: 1,820 mm (72 in) Rear: 1,670 mm (66 in)
Wheelbase	1989: 2,896 mm (114.0 in) 1990: 2,940 mm (115.7 in)
Engine	1989: Honda RA109E, 3,496 cc (213.3 cu in), 72° V10, NA, mid-engine, longitudinally mounted 1990: Honda RA100E, 3,493 cc (213.2 cu in), 72° V10, NA, mid-engine, longitudinally-mounted
Transmission	Weismann/McLaren Longitudinal and Transverse 6-Speed manual
Power	675–710 hp (503.3–529.4 kW) @ 13,500 rpm[2]
Fuel	Shell
Tyres	Goodyear
Competition history
Notable entrants	Honda Marlboro McLaren
Notable drivers	1./27. Ayrton Senna 2. Alain Prost 28. Gerhard Berger
Debut	1989 Brazilian Grand Prix (MP4/5) 1990 United States Grand Prix (MP4/5B)
First win	1989 San Marino Grand Prix (MP4/5) 1990 United States Grand Prix (MP4/5B)
Last win	1989 Spanish Grand Prix (MP4/5) 1990 Italian Grand Prix (MP4/5B)
Last event	1989 Australian Grand Prix (MP4/5) 1990 Australian Grand Prix (MP4/5B)
Races Wins Podiums Poles F/Laps 32 16 36 27 12
Constructors' Championships	2 (1989, 1990)
Drivers' Championships	2 (1989, Alain Prost 1990, Ayrton Senna)

The McLaren MP4/5, and its derived sister model, the MP4/5B, were highly successful Formula One racing cars designed by the McLaren Formula One team based in Woking, England, and powered by Honda's naturally-aspirated RA109E and RA100E V10 engines respectively. The chassis design was led by Neil Oatley, teaming up with Steve Nichols, Pete Weismann, Tim Wright, Bob Bell and Mike Gascoyne. As with the previous designs, Gordon Murray, as Technical Director, had the role of liaising between the drawing office and production. Osamu Goto was the Honda F1 team chief designer for the car's engine.^[3][4]

The MP4/5 was loosely based on its 1988 predecessor, the all-conquering MP4/4. McLaren used the new car for half of the 1989 season using the Weismann Longitudinal Transmission from the MP4/4, and the MP4/5B with the Weismann Transverse Transmission for the last half of the 1989 season and for 1990, earning back-to-back drivers' and constructors' world titles with the type.