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BMW 645Ci Convertible

(2005 model)

Brief specs of 2005 BMW 645Ci Convertible

2-door 4-seater convertible (cabriolet), petrol (gasoline) 8-cylinder 32-valve V engine, DOHC (double overhead camshafts, twin cam), 4392 cm3 / 268.0 cu in / 268.0 cu in, 243.0 kW / 325.9 hp / 325.9 hp @ 6100 rpm / 6100 rpm / 6100 rpm, 447.5 N·m / 330.0 lb·ft / 330.0 lb·ft @ 3600 rpm / 3600 rpm / 3600 rpm, manual 6-speed transmission, rear wheel drive, 250 km/h / 155 mph / 155 mph top speed, consumption 12.8 l/100km / 22.1 mpg-UK / 18.4 mpg-US

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from2005
Model645Ci ConvertibleIssued until
Serie6Number made
Model familyBody construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors2
Bodywork typeconvertible (cabriolet)Number of seats4
Bodywork designerCargo capacity (volume)351 l / 12.40 cu ft / 12.40 cu ft
Passenger space (volume)2294 l / 81.01 cu ft / 81.01 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4830 mm / 190.2 in / 190.2 inTotal (curb) weight1895 kg / 4178 lb / 4178 lb
Width1860 mm / 73.2 in / 73.2 inDry weight
Height1380 mm / 54.3 in / 54.3 inLoad capacity320 kg / 705 lb / 705 lb
Wheelbase2890 mm / 113.8 in / 113.8 inGross (max.) weight2215 kg / 4883 lb / 4883 lb
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearanceFuel capacity70 l / 15.4 UK gal / 18.5 US gal
Length/wheelbase ratio1.67  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.18 m2 / 23.5 sq ft / 23.5 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders8
Engine TypeV engine (V8)Total number of valves32
Engine ManufacturerValves per cylinder4
Engine constructionBore92.0 mm / 3.62 in / 3.62 in
Fuelpetrol (gasoline)Stroke83.0 mm / 3.27 in / 3.27 in
Fuel detailsunleaded 98Bore/Stroke ratio1.11
Fuel supplyInjectionEngine displacement4392 cm3 / 268.0 cu in / 268.0 cu in
Engine Main bearingsUnitary capacity551.75 cm3/cylinder / 33.670 cu in/cylinder / 33.670 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio10.5 : 1
SumpMax. output power243.0 kW / 325.9 hp / 325.9 hp at 6100 rpm / 6100 rpm / 6100 rpm
AspirationMax. torque447.5 N·m / 330.0 lb·ft / 330.0 lb·ft at 3600 rpm / 3600 rpm / 3600 rpm
Compressor typeMaximum rpm
IntercoolerMax. net output (power at the wheels)97.2 kW / 130.3 hp / 130.3 hp (est.)
CoolantwaterSpecific output55.3 kW/l / 1.216 bhp/cu in / 1.216 bhp/cu in
Catalytic converterSpecific torque101.9 N·m/l / 0.89 lb·ft/cu in / 0.89 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears6
Wheel driverear wheel driveTop gear (drive) ratio
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed250 km/h / 155 mph / 155 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio174.7 kW/ton / 132.4 bhp/ton / 132.4 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)15.7 l/100km / 18.0 mpg-UK / 15.0 mpg-US
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)10.2 l/100km / 27.7 mpg-UK / 23.1 mpg-US
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)12.8 l/100km / 22.1 mpg-UK / 18.4 mpg-US
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions300 g/km / 482 g/mi / 482 g/mi (est.)
  Range547 km / 340 mi / 340 mi

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle12.0 m / 39.4 ft / 39.4 ft
Suspension frontIndependentSuspension rearIndependent
Wheels frontWheels rear
Tyres front245/50-R18Tyres rear245/45-R18
Brakes frontventilated discBrakes rearventilated disc
Brake diameter frontBrake diameter rear
Brakes detailsABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW 645Ci Convertible

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