1973 BMW 525 E12

The BMW 525 is a saloon designed by Paul Bracq with 4 doors and a front mounted engine which supplies its power to the rear wheels. The 525 forms part of BMW's E12 series of cars. It is powered by a naturally aspirated engine of 2.5 litre capacity. This unit features single overhead camshaft valve gear, 6 cylinder layout, and 2 valves per cylinder. It has an output of 143 bhp (145 PS/107 kW) of power at 6000 rpm, and maximum torque of 208 N·m (153 lb·ft/21.2 kgm) at 4000 rpm. This power is delivered to the wheels via a 4 speed manual gearbox. Its quoted kerb weight is 1380 kg. It is said to be able to achieve a top speed of 192 km/h, or 119 mph.

Pictures

BMW 525 -
BMW 525
Image courtesy of BMW

Key facts

1973 BMW 525 E12 information summary

What body style?
4 door sedan/saloon with 4/5 seats
How long?
4620 mm
How heavy?
1380 kg
What size engine?
2.5 litre, 2495 cm3
How many cylinders?
6, Straight
How much power?
145 PS / 143 bhp / 107 kW @ 6000 rpm
How much torque?
208 Nm / 153 ft.lb / 21.2 kgm @ 4000 rpm
How quick?
0-100 km/h: 10.5 s
How fast?
192 km/h, 119 mph

BMW E12 models

4 door sedan/​saloon FR 5M 1766 cm3 105 PS 103.5 bhp 77 kW 1240 kg
4 door sedan/​saloon FR 3A 1766 cm3 105 PS 103.5 bhp 77 kW 1260 kg
4 door sedan/​saloon FR 5M 1991 cm3 125 PS 123 bhp 92 kW 1270 kg
4 door sedan/​saloon FR 3A 1991 cm3 125 PS 123 bhp 92 kW 1285 kg
4 door sedan/​saloon FR 5M 2788 cm3 184 PS 181.5 bhp 135 kW 1430 kg
4 door sedan/​saloon FR 3A 2788 cm3 184 PS 181.5 bhp 135 kW 1445 kg
4 door sedan/​saloon FR 5M 1766 cm3 90 PS 89 bhp 66 kW 1240 kg
4 door sedan/​saloon FR 3A 1766 cm3 100 PS 99 bhp 74 kW 1245 kg
4 door sedan/​saloon FR 5M 1991 cm3 122 PS 120.5 bhp 90 kW 1310 kg
4 door sedan/​saloon FR 3A 1991 cm3 122 PS 120.5 bhp 90 kW 1330 kg
4 door sedan/​saloon FR 4M 2788 cm3 184 PS 181.5 bhp 135 kW 1410 kg
4 door sedan/​saloon FR 5M 2788 cm3 184 PS 181.5 bhp 135 kW 1410 kg
4 door sedan/​saloon FR 3A 2788 cm3 184 PS 181.5 bhp 135 kW 1430 kg
4 door sedan/​saloon FR 3A 2788 cm3 170 PS 168 bhp 125 kW 1410 kg
BMW M535i -
4 door sedan/​saloon FR 5M 3453 cm3 218 PS 215 bhp 160 kW 1391 kg
4 door sedan/​saloon FR 4M 1766 cm3 102 PS 100.5 bhp 75 kW 1190 kg
4 door sedan/​saloon FR 5M 1766 cm3 102 PS 100.5 bhp 75 kW 1190 kg
4 door sedan/​saloon FR 3A 2788 cm3 170 PS 168 bhp 125 kW 1485 kg
4 door sedan/​saloon FR 3A 1766 cm3 90 PS 89 bhp 66 kW 1260 kg
4 door sedan/​saloon FR 3A 2986 cm3 175 PS 173 bhp 129 kW 1425 kg
BMW 520 -
4 door sedan/​saloon FR 4M 1991 cm3 122 PS 120.5 bhp 90 kW 1350 kg
4 door sedan/​saloon FR 4M 2788 cm3 177 PS 175 bhp 130 kW 1410 kg
4 door sedan/​saloon FR 4M 2986 cm3 179 PS 177 bhp 132 kW 1425 kg
BMW 525 -
4 door sedan/​saloon FR 4M 2495 cm3 150 PS 148 bhp 110 kW 1350 kg
4 door sedan/​saloon FR 3A 2495 cm3 150 PS 148 bhp 110 kW 1370 kg
BMW 528 Automatic -
4 door sedan/​saloon FR 3A 2788 cm3 170 PS 167.5 bhp 125 kW 1405 kg
4 door sedan/​saloon FR 5M 1991 cm3 115 PS 113 bhp 84 kW
4 door sedan/​saloon FR 3A 1991 cm3 115 PS 113 bhp 84 kW 1260 kg
4 door sedan/​saloon FR 4M 1991 cm3 125 PS 123 bhp 92 kW 1295 kg
4 door sedan/​saloon FR 5M 1991 cm3 130 PS 128 bhp 95 kW

Similar models

4 door sedan/​saloon FR 3A 2548 cm3 144 PS 142 bhp 106 kW 1220 kg
4 door sedan/​saloon FR 4M 3018 cm3 142 PS 140 bhp 104 kW 1480 kg
4 door sedan/​saloon FR 4M 2641 cm3 132 PS 130 bhp 97 kW 1480 kg
4 door sedan/​saloon FR 4M 2778 cm3 142 PS 140 bhp 104 kW 1470 kg
4 door sedan/​saloon FR 5M 2778 cm3 142 PS 140 bhp 104 kW 1470 kg
4 door sedan/​saloon FR 4M 2565 cm3 140 PS 138 bhp 103 kW 1350 kg
4 door sedan/​saloon FR 4M 2753 cm3 140 PS 138 bhp 103 kW 1445 kg
4 door sedan/​saloon FR 4M 2784 cm3 134 PS 132 bhp 98 kW 1475 kg
4 door sedan/​saloon FR 4M 2784 cm3 147 PS 145 bhp 108 kW 1495 kg
4 door sedan/​saloon FR 4M 2784 cm3 147 PS 145 bhp 108 kW 1495 kg
4 door sedan/​saloon FR 4M 2784 cm3 134 PS 132 bhp 98 kW 1475 kg
2 door sedan/​saloon FR 4M 2490 cm3 152 PS 150 bhp 112 kW 1185 kg
4 door sedan/​saloon FR 4M 2490 cm3 152 PS 150 bhp 112 kW 1210 kg
4 door sedan/​saloon FR 4M 2664 cm3 138 PS 136 bhp 101 kW 1455 kg
4 door sedan/​saloon FR 5M 2664 cm3 146 PS 144 bhp 107 kW 1475 kg
Renault 30 TS -
4 door sedan/​saloon FF 4M 2664 cm3 133 PS 131 bhp 98 kW 1320 kg
4 door sedan/​saloon FF 3A 2664 cm3 133 PS 131 bhp 98 kW
2 door sedan/​saloon FR 3A 2563 cm3 152 PS 150 bhp 112 kW 1302 kg
Toyota Crown 2600 Royal Saloon -
4 door sedan/​saloon FR 3A 2653 cm3 140 PS 138 bhp 103 kW 1470 kg
4 door sedan/​saloon FR 3A 2653 cm3 140 PS 138 bhp 103 kW 1470 kg
Toyota Crown 2600 Super Saloon -
4 door sedan/​saloon FR 3M 2653 cm3 140 PS 138 bhp 103 kW 1400 kg
4 door sedan/​saloon FR 3A 2653 cm3 140 PS 138 bhp 103 kW 1405 kg
4 door sedan/​saloon FR 3A 2653 cm3 140 PS 138 bhp 103 kW 1405 kg
4 door sedan/​saloon FR 3M 2563 cm3 140 PS 138 bhp 103 kW 1420 kg
4 door sedan/​saloon FR 4M 2563 cm3 140 PS 138 bhp 103 kW 1435 kg
4 door sedan/​saloon FR 5M 2563 cm3 140 PS 138 bhp 103 kW 1440 kg
4 door sedan/​saloon FR 3A 2563 cm3 140 PS 138 bhp 103 kW 1425 kg
4 door sedan/​saloon FR 3A 2563 cm3 140 PS 138 bhp 103 kW 1435 kg
4 door sedan/​saloon FR 4M 2498 cm3 134 PS 132 bhp 98 kW 1225 kg
4 door sedan/​saloon FR 4M 1998 cm3 134 PS 132 bhp 98 kW 1225 kg
Volvo 164 -
4 door sedan/​saloon FR 4M 2978 cm3 147 PS 145 bhp 108 kW 1320 kg
Volvo 264 GL -
4 door sedan/​saloon FR 4M 2664 cm3 140 PS 138 bhp 103 kW 1450 kg
1973 BMW 525 data
bodywork
Body type4/5 seater sedan/saloon
Number of doors4
DesignerPaul Bracq
dimensions & weights
mminches
Wheelbase 2636 mm 103.8 inches
Track/tread (front) 1406 mm 55.4 inches
Track/tread (rear) 1446 mm 56.9 inches
Length 4620 mm 181.9 inches
Width 1690 mm 66.5 inches
Height 1425 mm 56.1 inches
Ground clearance
length:wheelbase ratio 1.75
Kerb weight 1380 kg 3042 lb
Weight distribution
fuel tank capacity 70 litres 15.4 UK Gal 18.5 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer BMW
Engine code
Cylinders Straight 6
Capacity 2.5 litre
2495 cc
(152.254 cu in)
Bore × Stroke 86 × 71.6 mm
3.39 × 2.82 in
Bore/stroke ratio 1.2
Valve gear single overhead camshaft (SOHC)
2 valves per cylinder
12 valves in total
maximum power output
(DIN)
145 PS (143 bhp) (107 kW)
at 6000 rpm
Specific output
(DIN)
57.3 bhp/litre
0.94 bhp/cu in
maximum torque
(DIN)
208 Nm (153 ft·lb) (21.2 kgm)
at 4000 rpm
Specific torque
(DIN)
83.37 Nm/litre
1.01 ft·lb/cu3
Engine construction
sump wet sumped
compression ratio 9:1
Fuel system 2 Zenith 32/40 INAT carburettors
bmep (brake mean effective pressure) 1047.6 kPa (151.9 psi)
Maximum RPM
crankshaft bearings 7
Engine coolant Water
Unitary capacity 415.83 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h 10.5 s
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed 192 km/h (119 mph)
Power-to-weight ratio 105.06 PS/tonne (1000 kg)
77.27 kW/tonne (1000 kg)
103.62 bhp/tonne (1000 kg)
0.05 bhp/lb
Weight-to-power ratio 12.94 kg/kW
21.62 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
Turning circle
Front suspension I.MS.CS.LW.LoTrailLi.ARB.
Rear suspension I.STA.CS.
Wheel size front 5.5J x 14 H2
Wheel size rear 5.5J x 14 H2
Tyres front 175 HR 14
Tyres rear 175 HR 14
Brakes F/R Di/Di-S
Front brake diameter 280 mm
Rear brake diameter 272 mm
Braked area
Gearbox 4 speed manual
Top gear ratio 1
Final drive ratio 3.64
general
Carfolio.com ID119383
Production total
Model code
Model family E12
RAC rating 27.5
Insurance classification No information available
Tax band No information available
1973 BMW 525 added 2004-03-23.
Last modified 2013-02-28.