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Category | Formula One | ||||||||
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Constructor | British Racing Motors | ||||||||
Designer(s) | Stewart Tresilian Tony Rudd | ||||||||
Predecessor | BRM P30 | ||||||||
Successor | BRM P48 | ||||||||
Technical specifications[1] | |||||||||
Chassis | Steel box-section ladder. | ||||||||
Suspension (front) | Porsche-type trailing arms, with Lockheed air struts. | ||||||||
Suspension (rear) | de Dion tube, with Lockheed air struts. | ||||||||
Wheelbase | 90 in (228.6 cm) | ||||||||
Engine | BRM 25 2,491 cc (152.0 cu in) Inline-four, Normally aspirated, front-mounted. | ||||||||
Transmission | BRM 4-speed, transverse shaft. ZF differential. | ||||||||
Weight | 1,521 lb (689.9 kg) (Unladen) | ||||||||
Fuel | Petrol/alcohol mix. | ||||||||
Tyres | Dunlop. | ||||||||
Competition history | |||||||||
Notable entrants | Owen Racing Organisation | ||||||||
Notable drivers | Mike Hawthorn Tony Brooks Jean Behra Harry Schell Joakim Bonnier Graham Hill | ||||||||
Debut | 1956 British Grand Prix | ||||||||
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The BRM P25 was a Formula One racing car raced from 1956 to 1960 and the second car produced by the British Racing Motors consortium. After the failure of the complex BRM V16, the P25's design emphasized simplicity. The car was fitted with a 2.5-litre straight-4 engine, producing some 275 horsepower. The P25 would be the foundation of BRM's successes in the late 1950s and early 1960s.