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BMW Z4 M Roadster

(2005 model)

Brief specs of 2005 BMW Z4 M Roadster

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 6-cylinder 24-valve straight (inline) engine, DOHC (double overhead camshafts, twin cam), 3246 cm3 / 198.1 cu in / 198.1 cu in, 252.0 kW / 337.9 hp / 337.9 hp @ 7900 rpm / 7900 rpm / 7900 rpm, 365.0 N·m / 269.2 lb·ft / 269.2 lb·ft @ 4900 rpm / 4900 rpm / 4900 rpm, manual 6-speed transmission, rear wheel drive, 250 km/h / 155 mph / 155 mph top speed, consumption 12.1 l/100km / 23.3 mpg-UK / 19.4 mpg-US

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from2005
ModelZ4 M RoadsterIssued until
SerieZ4Number made
Model familyBody construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4113 mm / 161.9 in / 161.9 inTotal (curb) weight1485 kg / 3274 lb / 3274 lb
Width1781 mm / 70.1 in / 70.1 inDry weight
Height1302 mm / 51.3 in / 51.3 inLoad capacity
Wheelbase2497 mm / 98.3 in / 98.3 inGross (max.) weight
Track front1486 mm / 58.5 in / 58.5 inTowing weight
Track rear1516 mm / 59.7 in / 59.7 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.65  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.37Frontal area (A)1.92 m2 / 20.7 sq ft / 20.7 sq ft
Aerodynamic coefficient (Cd×A)0.71 m2 / 7.6 sq ft / 7.6 sq ftAerodynamic resistance (Aero horse power) at 100 km/h (62 mph)17.6 kW / 23.7 hp / 23.7 hp

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) Total number of valves24
Engine ManufacturerBMWValves per cylinder4
Engine constructionBore87.0 mm / 3.43 in / 3.43 in
Fuelpetrol (gasoline)Stroke91.0 mm / 3.58 in / 3.58 in
Fuel detailsBore/Stroke ratio0.96
Fuel supplyEngine displacement3246 cm3 / 198.1 cu in / 198.1 cu in
Engine Main bearingsUnitary capacity541.00 cm3/cylinder / 33.014 cu in/cylinder / 33.014 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio11.5 : 1
SumpMax. output power252.0 kW / 337.9 hp / 337.9 hp at 7900 rpm / 7900 rpm / 7900 rpm
AspirationnaturalMax. torque365.0 N·m / 269.2 lb·ft / 269.2 lb·ft at 4900 rpm / 4900 rpm / 4900 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)125.2 kW / 167.9 hp / 167.9 hp (est.)
CoolantwaterSpecific output77.6 kW/l / 1.706 bhp/cu in / 1.706 bhp/cu in
Catalytic converteryesSpecific torque112.5 N·m/l / 0.98 lb·ft/cu in / 0.98 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears6
Wheel driverear wheel driveTop gear (drive) ratio0.85
  Final gear (drive) ratio3.62

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 ratio227.6 kW/ton / 172.5 bhp/ton / 172.5 bhp/ton
Acceleration 0-100 km/h5.00 s / 5.00 s / 5.00 sFuel consumption, City (urban)18.2 l/100km / 15.5 mpg-UK / 12.9 mpg-US
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)8.6 l/100km / 32.8 mpg-UK / 27.4 mpg-US
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)12.1 l/100km / 23.3 mpg-UK / 19.4 mpg-US
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions292 g/km / 470 g/mi / 470 g/mi
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontSuspension rear
Wheels front8.0J x 18 EH2 IS42 LMWheels rear9.0J x 18 EH2 IS30 LM
Tyres front225/45 ZR 18Tyres rear255/40 ZR 18
Brakes frontventilated discBrakes rearventilated disc
Brake diameter front345 mm / 13.6 in / 13.6 inBrake diameter rear328 mm / 12.9 in / 12.9 in
Brakes detailsservo-assisted, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW Z4 M Roadster

Infobox

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