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BMW 525

(1973 model)

Brief specs of 1973 BMW 525

4-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, SOHC (single overhead camshaft), 2495 cm3 / 152.3 cu in / 152.3 cu in, 106.6 kW / 143.0 hp / 143.0 hp @ 6000 rpm / 6000 rpm / 6000 rpm, 208.0 N·m / 153.4 lb·ft / 153.4 lb·ft @ 4000 rpm / 4000 rpm / 4000 rpm, manual 4-speed transmission, rear wheel drive, 192 km/h / 119 mph / 119 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from1973
Model525Issued until
Serie5Number made
Model familyE12Body construction
Model codeBody designation
ManufacturerBMWCountryDE

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerPaul BracqCargo capacity (volume)520 l / 18.36 cu ft / 18.36 cu ft
Passenger space (volume)4450 l / 157.15 cu ft / 157.15 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4620 mm / 181.9 in / 181.9 inTotal (curb) weight1380 kg / 3042 lb / 3042 lb
Width1690 mm / 66.5 in / 66.5 inDry weight
Height1425 mm / 56.1 in / 56.1 inLoad capacity
Wheelbase2636 mm / 103.8 in / 103.8 inGross (max.) weight
Track front1406 mm / 55.4 in / 55.4 inTowing weight
Track rear1446 mm / 56.9 in / 56.9 inWeight distribution (front)
Ground clearanceFuel capacity70 l / 15.4 UK gal / 18.5 US gal
Length/wheelbase ratio1.75  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.05 m2 / 22.0 sq ft / 22.0 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves12
Engine ManufacturerBMWValves per cylinder2
Engine constructionBore86.0 mm / 3.39 in / 3.39 in
Fuelpetrol (gasoline)Stroke71.6 mm / 2.82 in / 2.82 in
Fuel detailsBore/Stroke ratio1.2
Fuel supply2 Ze 32/40 INAT carbsEngine displacement2495 cm3 / 152.3 cu in / 152.3 cu in
Engine Main bearings7Unitary capacity415.83 cm3/cylinder / 25.376 cu in/cylinder / 25.376 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio9.0 : 1
SumpwetMax. output power106.6 kW / 143.0 hp / 143.0 hp at 6000 rpm / 6000 rpm / 6000 rpm
AspirationnaturalMax. torque208.0 N·m / 153.4 lb·ft / 153.4 lb·ft at 4000 rpm / 4000 rpm / 4000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)48.9 kW / 65.5 hp / 65.5 hp (est.)
CoolantwaterSpecific output42.7 kW/l / 0.939 bhp/cu in / 0.939 bhp/cu in
Catalytic converternoSpecific torque83.4 N·m/l / 0.73 lb·ft/cu in / 0.73 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.64

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed192 km/h / 119 mph / 119 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio103.6 kW/ton / 78.5 bhp/ton / 78.5 bhp/ton
Acceleration 0-100 km/h10.50 s / 10.50 s / 10.50 sFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
Steeringworm & rollerSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, MacPherson strut, Coil springs, Lower wishbone,Lo Trailing link, Anti-roll (anti-sway) bar (ARB)Suspension rearIndependent, Semi-trailing arm, Coil springs
Wheels front5.5J x 14 H2Wheels rear5.5J x 14 H2
Tyres front175 HR 14Tyres rear175 HR 14
Brakes frontdiscBrakes reardisc
Brake diameter front280 mm / 11.0 in / 11.0 inBrake diameter rear272 mm / 10.7 in / 10.7 in
Brakes detailsservo-assisted, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW 525

Infobox

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