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BMW Z4 2.5si Roadster

(2008 model)

Brief specs of 2008 BMW Z4 2.5si Roadster

2-door 2-seater convertible (cabriolet), petrol (gasoline) 6-cylinder 24-valve straight (inline) engine, DOHC (double overhead camshafts, twin cam), 2496 cm3 / 152.3 cu in / 152.3 cu in, 160.0 kW / 214.6 hp / 214.6 hp @ 6500 rpm / 6500 rpm / 6500 rpm, 250.0 N·m / 184.4 lb·ft / 184.4 lb·ft @ 2750 rpm / 2750 rpm / 2750 rpm, manual 6-speed transmission, rear wheel drive, 240 km/h / 149 mph / 149 mph top speed, consumption 8.4 l/100km / 33.6 mpg-UK / 28.0 mpg-US

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from2008
ModelZ4 2.5si RoadsterIssued until
SerieZ4Number made
Model familyBody construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors2
Bodywork typeconvertible (cabriolet)Number of seats2
Bodywork designerCargo capacity (volume)240 l / 8.48 cu ft / 8.48 cu ft
Passenger space (volume)2803 l / 98.99 cu ft / 98.99 cu ftMax. cargo capacity (volume)260 l / 9.18 cu ft / 9.18 cu ft

Dimensions & Weight

Length4100 mm / 161.4 in / 161.4 inTotal (curb) weight1360 kg / 2998 lb / 2998 lb
Width1790 mm / 70.5 in / 70.5 inDry weight
Height1310 mm / 51.6 in / 51.6 inLoad capacity225 kg / 496 lb / 496 lb
Wheelbase2500 mm / 98.4 in / 98.4 inGross (max.) weight1585 kg / 3494 lb / 3494 lb
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearanceFuel capacity55 l / 12.1 UK gal / 14.5 US gal
Length/wheelbase ratio1.64  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.99 m2 / 21.5 sq ft / 21.5 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves24
Engine ManufacturerValves per cylinder4
Engine constructionBore82.0 mm / 3.23 in / 3.23 in
Fuelpetrol (gasoline)Stroke78.8 mm / 3.10 in / 3.10 in
Fuel detailsunleaded 95Bore/Stroke ratio1.04
Fuel supplyInjectionEngine displacement2496 cm3 / 152.3 cu in / 152.3 cu in
Engine Main bearingsUnitary capacity416.14 cm3/cylinder / 25.394 cu in/cylinder / 25.394 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio11.0 : 1
SumpwetMax. output power160.0 kW / 214.6 hp / 214.6 hp at 6500 rpm / 6500 rpm / 6500 rpm
AspirationMax. torque250.0 N·m / 184.4 lb·ft / 184.4 lb·ft at 2750 rpm / 2750 rpm / 2750 rpm
Compressor typeMaximum rpm
IntercoolerMax. net output (power at the wheels)64.0 kW / 85.8 hp / 85.8 hp (est.)
CoolantwaterSpecific output64.1 kW/l / 1.409 bhp/cu in / 1.409 bhp/cu in
Catalytic converterSpecific torque100.2 N·m/l / 0.88 lb·ft/cu in / 0.88 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) speed240 km/h / 149 mph / 149 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio160.3 kW/ton / 121.5 bhp/ton / 121.5 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)8.4 l/100km / 33.6 mpg-UK / 28.0 mpg-US
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions197 g/km / 316 g/mi / 316 g/mi (est.)
  Range655 km / 407 mi / 407 mi

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering detailsTraction control. Electronic stabilisation program (ESP).
Turns lock-to-lockTurning circle11.0 m / 36.1 ft / 36.1 ft
Suspension frontSuspension rear
Wheels frontWheels rear
Tyres front220/50-R16Tyres rear
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW Z4 2.5si Roadster

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