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| BMW 503 | |
|---|---|
| Name | BMW 503 |
| Manufacturer | BMW |
| Production | 1956–1959 |
| Assembly | Munich, Germany |
| Designer | Albrecht von Goertz |
| Class | Grand tourer |
| Body style | 2-door coupe, 2-door cabriolet |
| Layout | Front-engine, rear-wheel-drive |
| Engine | 3.2 L OHV V8 |
| Transmission | 4-speed manual |
| Wheelbase | 2780 mm |
| Length | 4790 mm |
| Width | 1760 mm |
| Height | 1420 mm |
| Weight | 1550–1650 kg |
BMW 503
The BMW 503 is a grand tourer produced by BMW from 1956 to 1959. Commissioned during the post‑war revival of BMW alongside the BMW 507, the 503 combined a V8 powerplant, coachbuilt aluminum bodywork, and styling influenced by European and American designers. The model played a role in reestablishing Bavaria as a maker of luxury automobiles during the 1950s alongside contemporaries such as Mercedes-Benz and Jaguar Cars.
Development began in the early 1950s under the direction of Konrad leadership within BMW while navigating financial pressures involving Marshall Plan era recovery and export strategies targeting United States. The chassis and engine program was overseen by engineers influenced by prior work from Eberhard Wolff and executive decisions involving Herbert Quandt. Design consultancy was awarded to Albrecht von Goertz, who had emigrated from Germany to United States and had links with Packard and Studebaker. The 503 project was intertwined with BMW’s publicity campaigns at events such as the Geneva Motor Show and aimed to compete with models from Aston Martin, Ferrari, and Maserati for affluent buyers in Europe and North America.
The 503’s coachwork, built by contractors including Karosserie Baur and Karosseriewerke, displayed flowing lines, a low roofline, and a long bonnet reminiscent of contemporary Pininfarina and Bertone designs. Von Goertz’s influence paralleled work by Harley Earl at General Motors and visual cues seen on Chrysler concept cars; chrome trim and a chromed kidney grille reflected BMW heritage. Interior appointments featured leather from suppliers tied to Württemberg workshops, instruments reminiscent of VDO clusters, and attention to ergonomics similar to Mercedes-Benz 300 SL albeit in a more conservative grand‑touring layout.
Power came from a 3.2‑litre OHV V8 conceived by BMW engineers influenced by prewar V8 layouts and later paralleled in designs by Rover and Buick. The engine used a cast‑iron block, aluminium heads, and a four‑bearing crankshaft delivering around 140–160 PS, transmitted via a four‑speed manual gearbox; some markets paired the unit with overdrive units similar to those used by Austin-Healey. Chassis engineering included a tubular frame with independent front suspension and a live rear axle with semi‑elliptic leaf springs—solutions comparable to period practice at Triumph Motor Company and Rolls-Royce. Braking used hydraulic drums supplied by firms akin to Lockheed and steering featured a recirculating ball setup reminiscent of BMW’s own contemporary light‑car models.
Production, conducted in Munich facilities, was limited: fewer than 300 coupés and cabriolets combined were completed between 1956 and 1959. Variants included closed coupé and open cabriolet body styles, coachbuilt conversions by firms linked to Karosserie Baur, and several bespoke interiors for clients from United States and Europe. High unit costs, compounded by development expenses and competition from established marques such as Ferrari and Mercedes-Benz, meant production ceased as BMW shifted focus toward mass‑market models like the BMW 700 and later the BMW 1500.
Though primarily a grand tourer, a handful of 503 chassis were entered in long‑distance events and hillclimbs by privateers and small teams associated with clubs such as the Automobile Club de France and Royal Automobile Club. The 503’s V8 offered torque suited to endurance rallies similar to Mille Miglia entrants, but weight and chassis dynamics limited its competitiveness against lightweight sports cars from Lotus and Porsche. Motorsport appearances were therefore sporadic and tended to be in touring car or exhibition roles alongside contemporary BMW 507 entries and demonstrations at venues like Nürburgring.
Contemporary press from outlets comparable to Autocar and Road & Track praised the 503’s build quality, luxury appointments, and V8 refinement but criticized its high price relative to performance compared with Jaguar XK120 and Aston Martin DB2/4. Commercially the model strained BMW’s finances, influencing boardroom decisions that led to increased emphasis on compact models and the eventual stewardship of Herbert Quandt. Historically, the 503 is regarded as a rare, coachbuilt grand tourer that helped reassert BMW’s premium image and provided engineering lessons applied to later successes like the BMW 2002 and the modern BMW 6 Series. Surviving examples are sought by collectors at auctions held by houses such as Bring a Trailer and displayed in museums including the BMW Museum and private collections in Europe and North America.
Category:BMW vehicles Category:Grand tourers Category:Cars introduced in 1956