1955 BMW 503 Convertible

BMW 503 Convertible is an automobile that has a 2 door convertible/cabriolet body style designed by Albrecht Goertz with a front positioned engine that delivers power to the rear wheels. Its engine is a naturally aspirated petrol, 3.2 litre, overhead valve 90 degree V 8 cylinder with 2 valves per cylinder. It develops 138 bhp (140 PS/103 kW) of power at 4800 rpm, and maximum torque of 216 N·m (159 lb·ft/22 kgm) at 3800 rpm. A 4 speed manual 'box delivers the power to the driven wheels. Claimed weight at the kerb is 1500 kg. Maximum stated speed is 190 km/h or 118 mph.

Pictures

BMW 503 Convertible -
BMW 503 Convertible
Image courtesy of BMW

Key facts

1955 BMW 503 Convertible information summary

What body style?
2 door convertible/cabriolet with 2+2 seats
How long?
4750 mm
How heavy?
1500 kg
What size engine?
3.2 litre, 3169 cm3
How many cylinders?
8, V
How much power?
140 PS / 138 bhp / 103 kW @ 4800 rpm
How much torque?
216 Nm / 159 ft.lb / 22 kgm @ 3800 rpm
How fast?
190 km/h, 118 mph

BMW 503 models

BMW 503 -
2 door fixed-head coupé FR 4M 3169 cm3 140 PS 138 bhp 103 kW 1501 kg

Similar models

2 door convertible/​cabriolet FR 4A 4887 cm3
2 door convertible/​cabriolet FR 4A 4887 cm3
1955 BMW 503 Convertible data
bodywork
Body type2+2 seater convertible/cabriolet
Number of doors2
DesignerAlbrecht Goertz
dimensions & weights
mminches
Wheelbase 2835 mm 111.6 inches
Track/tread (front) 1400 mm 55.1 inches
Track/tread (rear) 1420 mm 55.9 inches
Length 4750 mm 187 inches
Width 1710 mm 67.3 inches
Height 1440 mm 56.7 inches
Ground clearance
length:wheelbase ratio 1.68
Kerb weight 1500 kg 3307 lb
Weight distribution
fuel tank capacity 75 litres 16.5 UK Gal 19.8 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer BMW
Engine code
Cylinders V 8 in 90° vee
Capacity 3.2 litre
3169 cc
(193.384 cu in)
Bore × Stroke 82 × 75 mm
3.23 × 2.95 in
Bore/stroke ratio 1.09
Valve gear overhead valve (OHV)
2 valves per cylinder
16 valves in total
maximum power output
(Net)
140 PS (138 bhp) (103 kW)
at 4800 rpm
Specific output
(Net)
43.5 bhp/litre
0.71 bhp/cu in
maximum torque
(Net)
216 Nm (159 ft·lb) (22 kgm)
at 3800 rpm
Specific torque
(Net)
68.16 Nm/litre
0.82 ft·lb/cu3
Engine construction
sump wet sumped
compression ratio 7.3:1
Fuel system 2 Zenith 32 NDIX carburettors
bmep (brake mean effective pressure) 856.5 kPa (124.2 psi)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 396.13 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed 190 km/h (118 mph)
Power-to-weight ratio 93.28 PS/tonne (1000 kg)
68.6 kW/tonne (1000 kg)
92 bhp/tonne (1000 kg)
0.04 bhp/lb
Weight-to-power ratio 14.58 kg/kW
24.35 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
chassis
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
Steering
turns lock-to-lock 3.500
Turning circle
Front suspension I.TB.
Rear suspension LA.TB.
Wheel size front 4½E x 16
Wheel size rear 4½E x 16
Tyres front 6.00-16
Tyres rear 6.00-16
Brakes F/R Dr/Dr
Front brake diameter 284 mm
Rear brake diameter 284 mm
Braked area
Gearbox 4 speed manual
Top gear ratio 1
Final drive ratio 3.89
general
Carfolio.com ID249876
Production total 139
Model code
Model family
RAC rating 33.4
Insurance classification No information available
Tax band No information available
1955 BMW 503 Convertible added 2011-07-01.
Last modified 2013-02-28.