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BMW 635 CSi

(1981 model)

Brief specs of 1981 BMW 635 CSi

2-door 2+2-seater fixed-head coupé, petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, SOHC (single overhead camshaft), 3430 cm3 / 209.3 cu in / 209.3 cu in, 160.3 kW / 215.0 hp / 215.0 hp @ 5200 rpm / 5200 rpm / 5200 rpm, 310.0 N·m / 228.6 lb·ft / 228.6 lb·ft @ 4000 rpm / 4000 rpm / 4000 rpm, manual 5-speed transmission, rear wheel drive, 225 km/h / 140 mph / 140 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from1981
Model635 CSiIssued until
Serie6Number made
Model familyE24Body construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors2
Bodywork typefixed-head coupéNumber of seats2+2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4755 mm / 187.2 in / 187.2 inTotal (curb) weight1427 kg / 3146 lb / 3146 lb
Width1753 mm / 69.0 in / 69.0 inDry weight
Height1384 mm / 54.5 in / 54.5 inLoad capacity
Wheelbase2625 mm / 103.3 in / 103.3 inGross (max.) weight
Track front1430 mm / 56.3 in / 56.3 inTowing weight
Track rear1464 mm / 57.6 in / 57.6 inWeight distribution (front)57.0 % / 57.0 % / 57.0 %
Ground clearance140 mm / 5.5 in / 5.5 inFuel capacity70 l / 15.4 UK gal / 18.5 US gal
Length/wheelbase ratio1.81  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.4Frontal area (A)2.06 m2 / 22.2 sq ft / 22.2 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.82 m2 / 8.9 sq ft / 8.9 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)20.5 kW / 27.5 hp / 27.5 hp (est.)

Engine

Engine CodeM30Total number of cylinders6
Engine Typestraight (inline) Total number of valves12
Engine ManufacturerBMWValves per cylinder2
Engine constructioncast iron block; aluminium alloy headBore92.0 mm / 3.62 in / 3.62 in
Fuelpetrol (gasoline)Stroke86.0 mm / 3.39 in / 3.39 in
Fuel detailsBore/Stroke ratio1.07
Fuel supplyBo Mot fuel inj.Engine displacement3430 cm3 / 209.3 cu in / 209.3 cu in
Engine Main bearings7Unitary capacity571.67 cm3/cylinder / 34.885 cu in/cylinder / 34.885 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio10.0 : 1
SumpwetMax. output power160.3 kW / 215.0 hp / 215.0 hp at 5200 rpm / 5200 rpm / 5200 rpm
AspirationnaturalMax. torque310.0 N·m / 228.6 lb·ft / 228.6 lb·ft at 4000 rpm / 4000 rpm / 4000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)84.8 kW / 113.7 hp / 113.7 hp (est.)
CoolantwaterSpecific output46.7 kW/l / 1.027 bhp/cu in / 1.027 bhp/cu in
Catalytic converternoSpecific torque90.4 N·m/l / 0.79 lb·ft/cu in / 0.79 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears5
Wheel driverear wheel driveTop gear (drive) ratio0.81
  Final gear (drive) ratio3.07

Performance

Acceleration 0-50 mph (80 km/h)5.20 s / 5.20 s / 5.20 sTop (maximal) speed225 km/h / 140 mph / 140 mph
Acceleration 0-60 mph (97 km/h)6.90 s / 6.90 s / 6.90 sPower-to-weight ratio150.7 kW/ton / 114.2 bhp/ton / 114.2 bhp/ton
Acceleration 0-100 km/h7.30 s / 7.30 s / 7.30 sFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)18.30 s / 18.30 s / 18.30 sFuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time15.20 s / 15.20 s / 15.20 s (top 92 km/h / 57 mph / 57 mph)Fuel consumption, Euro
Standing kilometer time27.90 s / 27.90 s / 27.90 s CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
Steeringrecirculating ball VPASSteering details
Turns lock-to-lock3.5Turning circle11.2 m / 36.7 ft / 36.7 ft
Suspension frontIndependent, MacPherson strut, Coil springsSuspension rearIndependent, Semi-trailing arm, Coil springs
Wheels frontWheels rear
Tyres frontMichelin TRX 220/55 VR 390Tyres rearMichelin TRX 220/55 VR 390
Brakes frontventilated discBrakes reardisc
Brake diameter front282 mm / 11.1 in / 11.1 inBrake diameter rear284 mm / 11.2 in / 11.2 in
Brakes detailsservo-assisted, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW 635 CSi

Infobox

The Varying Drivers License Requirements Around the World

Minimum driving ages, the number of passengers young drivers can have with them at any time, the times of day that drivers under the age of 18 can drive…

These all vary depending on where young motorists are driving. They vary, even, across the United States.

For instance, in Maine, motorists under the age of 18 aren’t allowed to have any passengers with them as they drive for the first 180 days after they obtain their licenses. In Alabama, motorists under the age of 18 can have one passenger with them.

And that’s just one example of the differences in driving license requirements from one part of the country to the next. The differences are even more pronounced when comparing one country to another. Minimum driving ages vary widely across the world. While most states in the United States allow youngsters to earn their learner’s permits at the age of 15, many other countries require their residents to be much older before they get behind the wheel of a car.

(...)

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