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BMW 645 Ci Cabriolet Automatic

(2007 model)

Brief specs of 2007 BMW 645 Ci Cabriolet Automatic

2-door 4-seater convertible (cabriolet), petrol (gasoline) 8-cylinder 32-valve V engine, DOHC (double overhead camshafts, twin cam), 4398 cm3 / 268.4 cu in / 268.4 cu in, 245.0 kW / 328.6 hp / 328.6 hp @ 6100 rpm / 6100 rpm / 6100 rpm, 450.0 N·m / 331.9 lb·ft / 331.9 lb·ft @ 3600 rpm / 3600 rpm / 3600 rpm, automatic 6-speed transmission, rear wheel drive, 250 km/h / 155 mph / 155 mph top speed, consumption 13.0 l/100km / 21.7 mpg-UK / 18.1 mpg-US

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from2007
Model645 Ci Cabriolet AutomaticIssued 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)350 l / 12.36 cu ft / 12.36 cu ft
Passenger space (volume)4130 l / 145.85 cu ft / 145.85 cu ftMax. cargo capacity (volume)350 l / 12.36 cu ft / 12.36 cu ft

Dimensions & Weight

Length4830 mm / 190.2 in / 190.2 inTotal (curb) weight1815 kg / 4001 lb / 4001 lb
Width1860 mm / 73.2 in / 73.2 inDry weight
Height1380 mm / 54.3 in / 54.3 inLoad capacity400 kg / 882 lb / 882 lb
Wheelbase2790 mm / 109.8 in / 109.8 inGross (max.) weight2215 kg / 4883 lb / 4883 lb
Track frontTowing weight2000 kg / 4409 lb / 4409 lb
Track rearWeight distribution (front)
Ground clearanceFuel capacity70 l / 15.4 UK gal / 18.5 US gal
Length/wheelbase ratio1.73  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.3Frontal area (A)2.18 m2 / 23.5 sq ft / 23.5 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.65 m2 / 7.0 sq ft / 7.0 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)16.3 kW / 21.8 hp / 21.8 hp (est.)

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)Stroke82.7 mm / 3.26 in / 3.26 in
Fuel detailsunleaded 98Bore/Stroke ratio1.11
Fuel supplyInjectionEngine displacement4398 cm3 / 268.4 cu in / 268.4 cu in
Engine Main bearingsUnitary capacity549.76 cm3/cylinder / 33.548 cu in/cylinder / 33.548 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio10.0 : 1
SumpwetMax. output power245.0 kW / 328.6 hp / 328.6 hp at 6100 rpm / 6100 rpm / 6100 rpm
AspirationMax. torque450.0 N·m / 331.9 lb·ft / 331.9 lb·ft at 3600 rpm / 3600 rpm / 3600 rpm
Compressor typeMaximum rpm
IntercoolerMax. net output (power at the wheels)98.0 kW / 131.4 hp / 131.4 hp (est.)
CoolantwaterSpecific output55.7 kW/l / 1.224 bhp/cu in / 1.224 bhp/cu in
Catalytic converterSpecific torque102.3 N·m/l / 0.90 lb·ft/cu in / 0.90 lb·ft/cu in

Transmission

Transmission typeautomaticNumber 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 ratio183.5 kW/ton / 139.0 bhp/ton / 139.0 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)13.0 l/100km / 21.7 mpg-UK / 18.1 mpg-US
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions304 g/km / 489 g/mi / 489 g/mi (est.)
  Range538 km / 335 mi / 335 mi

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering detailsTraction control. Electronic stabilisation program (ESP).
Turns lock-to-lockTurning circle12.0 m / 39.4 ft / 39.4 ft
Suspension frontSuspension rear
Wheels frontWheels rear
Tyres front245/45-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 645 Ci Cabriolet Automatic

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