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BMW 728i

(1979 model)

Brief specs of 1979 BMW 728i

4-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, SOHC (single overhead camshaft), 2788 cm3 / 170.1 cu in / 170.1 cu in, 135.0 kW / 181.0 hp / 181.0 hp @ 5800 rpm / 5800 rpm / 5800 rpm, 240.0 N·m / 177.0 lb·ft / 177.0 lb·ft @ 4200 rpm / 4200 rpm / 4200 rpm, manual 5-speed transmission, rear wheel drive, 201 km/h / 125 mph / 125 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from1979
Model728iIssued until
Serie7Number made
Model familyE23Body construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)500 l / 17.66 cu ft / 17.66 cu ft
Passenger space (volume)4450 l / 157.15 cu ft / 157.15 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4860 mm / 191.3 in / 191.3 inTotal (curb) weight1470 kg / 3241 lb / 3241 lb
Width1800 mm / 70.9 in / 70.9 inDry weight
Height1430 mm / 56.3 in / 56.3 inLoad capacity
Wheelbase2790 mm / 109.8 in / 109.8 inGross (max.) weight
Track front1500 mm / 59.1 in / 59.1 inTowing weight
Track rear1520 mm / 59.8 in / 59.8 inWeight distribution (front)
Ground clearanceFuel capacity100 l / 22.0 UK gal / 26.4 US gal
Length/wheelbase ratio1.74  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.42Frontal area (A)2.19 m2 / 23.6 sq ft / 23.6 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.92 m2 / 9.9 sq ft / 9.9 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)22.8 kW / 30.6 hp / 30.6 hp (est.)

Engine

Engine CodeM30Total number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves12
Engine ManufacturerBMWValves per cylinder2
Engine constructioncast iron block; light alloy headBore86.0 mm / 3.39 in / 3.39 in
Fuelpetrol (gasoline)Stroke80.0 mm / 3.15 in / 3.15 in
Fuel detailsBore/Stroke ratio1.08
Fuel supplyBo L-Jet fuel inj.Engine displacement2788 cm3 / 170.1 cu in / 170.1 cu in
Engine Main bearings7Unitary capacity464.67 cm3/cylinder / 28.356 cu in/cylinder / 28.356 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio9.3 : 1
SumpMax. output power135.0 kW / 181.0 hp / 181.0 hp at 5800 rpm / 5800 rpm / 5800 rpm
AspirationnaturalMax. torque240.0 N·m / 177.0 lb·ft / 177.0 lb·ft at 4200 rpm / 4200 rpm / 4200 rpm
Compressor typeN/AMaximum rpm6500 rpm / 6500 rpm / 6500 rpm
IntercoolernoMax. net output (power at the wheels)65.1 kW / 87.3 hp / 87.3 hp (est.)
CoolantwaterSpecific output48.4 kW/l / 1.064 bhp/cu in / 1.064 bhp/cu in
Catalytic converternoSpecific torque86.1 N·m/l / 0.75 lb·ft/cu in / 0.75 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears5
Wheel driverear wheel driveTop gear (drive) ratio0.81
  Final gear (drive) ratio3.64

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed201 km/h / 125 mph / 125 mph
Acceleration 0-60 mph (97 km/h)9.30 s / 9.30 s / 9.30 sPower-to-weight ratio123.1 kW/ton / 93.3 bhp/ton / 93.3 bhp/ton
Acceleration 0-100 km/hFuel 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
Steeringrecirculating ball VPASSteering details
Turns lock-to-lock3.8Turning circle11.4 m / 37.4 ft / 37.4 ft
Suspension frontIndependent, Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearIndependent, Semi-trailing arm, Coil springs
Wheels front6Wheels rear6
Tyres front195/70 HR 14Tyres rear195/70 HR 14
Brakes frontventilated discBrakes reardisc
Brake diameter front280 mm / 11.0 in / 11.0 inBrake diameter rear280 mm / 11.0 in / 11.0 in
Brakes detailsservo-assisted, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW 728i

Infobox

Beyond basic auto insurance

In addition to having enough liability protection, there are some other coverages you should consider:

Collision: Pays for damage to your car resulting from a collision with another car, an object or as a result of flipping over. It also covers damage caused by potholes. Even if you are at fault for the accident, your collision coverage will reimburse you for the costs of repairing your car, minus the deductible. If you are not at fault, your insurance company may try to recover the amount they paid out from the other driver’s insurance company though a process called subrogation. If the company is successful, you will be reimbursed for the deductible.

Comprehensive: Reimburses you for loss due to theft or damage caused by something other than a collision with another car or object, such as fire, falling objects, missiles, explosion, earthquake, windstorm, hail, flood, vandalism, riot, or contact with animals such as birds or deer. Comprehensive insurance will also reimburse you if your windshield is cracked or shattered; some companies may waive the deductible on the glass portion of this coverage.

Uninsured and Underinsured Motorist Coverage: Reimburses you, a member of your family, or a designated driver if one of you is hit by an uninsured or hit-and-run driver. Underinsured motorist coverage comes into play when an at-fault driver has insufficient insurance to pay for your total loss. These coverages are required in 19 states, but available in all. It is important to purchase the same amount of coverage for uninsured/underinsured motorists as you have for liability to others.

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