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BMW Z4 2.5i

(2005 model)

Brief specs of 2005 BMW Z4 2.5i

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 6-cylinder 24-valve straight (inline) engine, DOHC (double overhead camshafts, twin cam), 2497 cm3 / 152.4 cu in / 152.4 cu in, 129.8 kW / 174.1 hp / 174.1 hp @ 5800 rpm / 5800 rpm / 5800 rpm, 230.0 N·m / 169.6 lb·ft / 169.6 lb·ft @ 3500 rpm / 3500 rpm / 3500 rpm, manual 6-speed transmission, rear wheel drive, 229 km/h / 142 mph / 142 mph top speed, consumption 8.2 l/100km / 34.4 mpg-UK / 28.7 mpg-US

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from2005
ModelZ4 2.5iIssued 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)261 l / 9.22 cu ft / 9.22 cu ft
Passenger space (volume)5010 l / 176.93 cu ft / 176.93 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4091 mm / 161.1 in / 161.1 inTotal (curb) weight1345 kg / 2965 lb / 2965 lb
Width1781 mm / 70.1 in / 70.1 inDry weight
Height1299 mm / 51.1 in / 51.1 inLoad capacity
Wheelbase2495 mm / 98.2 in / 98.2 inGross (max.) weight
Track front1473 mm / 58.0 in / 58.0 inTowing weight
Track rear1523 mm / 60.0 in / 60.0 inWeight distribution (front)
Ground clearanceFuel capacity55 l / 12.1 UK gal / 14.5 US gal
Length/wheelbase ratio1.64  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.36Frontal area (A)1.91 m2 / 20.6 sq ft / 20.6 sq ft
Aerodynamic coefficient (Cd×A)0.69 m2 / 7.4 sq ft / 7.4 sq ftAerodynamic resistance (Aero horse power) at 100 km/h (62 mph)17.1 kW / 23.0 hp / 23.0 hp

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves24
Engine ManufacturerBMWValves 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 98Bore/Stroke ratio1.04
Fuel supplyInjectionEngine displacement2497 cm3 / 152.4 cu in / 152.4 cu in
Engine Main bearingsUnitary capacity416.17 cm3/cylinder / 25.396 cu in/cylinder / 25.396 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio11.0 : 1
SumpwetMax. output power129.8 kW / 174.1 hp / 174.1 hp at 5800 rpm / 5800 rpm / 5800 rpm
AspirationnaturalMax. torque230.0 N·m / 169.6 lb·ft / 169.6 lb·ft at 3500 rpm / 3500 rpm / 3500 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)81.7 kW / 109.6 hp / 109.6 hp (est.)
CoolantwaterSpecific output52.0 kW/l / 1.142 bhp/cu in / 1.142 bhp/cu in
Catalytic converteryesSpecific torque92.1 N·m/l / 0.81 lb·ft/cu in / 0.81 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears6
Wheel driverear wheel driveTop gear (drive) ratio0.85
  Final gear (drive) ratio3.38

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed229 km/h / 142 mph / 142 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio129.4 kW/ton / 98.0 bhp/ton / 98.0 bhp/ton
Acceleration 0-100 km/h7.10 s / 7.10 s / 7.10 sFuel consumption, City (urban)11.8 l/100km / 23.9 mpg-UK / 19.9 mpg-US
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)6.1 l/100km / 46.3 mpg-UK / 38.6 mpg-US
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)8.2 l/100km / 34.4 mpg-UK / 28.7 mpg-US
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions197 g/km / 317 g/mi / 317 g/mi
  Range671 km / 417 mi / 417 mi

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle11.0 m / 36.1 ft / 36.1 ft
Suspension frontIndependentSuspension rearIndependent
Wheels front7J x 16Wheels rear7J x 16
Tyres front225/55 R 16 92VTyres rear225/55 R 16 92V
Brakes frontventilated discBrakes rearventilated disc
Brake diameter front286 mm / 11.3 in / 11.3 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 Z4 2.5i

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