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BMW Z4 2.5Si Roadster E85

(2008 model)

Brief specs of 2008 BMW Z4 2.5Si Roadster E85

2-door 2-seater convertible (cabriolet), 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, 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 Roadster E85Issued 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)260 l / 9.18 cu ft / 9.18 cu ft
Passenger space (volume)4130 l / 145.85 cu ft / 145.85 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
Width1310 mm / 51.6 in / 51.6 inDry weight
Height1790 mm / 70.5 in / 70.5 inLoad capacity675 kg / 1488 lb / 1488 lb
Wheelbase2500 mm / 98.4 in / 98.4 inGross (max.) weight2035 kg / 4486 lb / 4486 lb
Track frontTowing weight1200 kg / 2646 lb / 2646 lb
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)0.3Frontal area (A)1.99 m2 / 21.5 sq ft / 21.5 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.60 m2 / 6.4 sq ft / 6.4 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)14.9 kW / 19.9 hp / 19.9 hp (est.)

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 detailsBore/Stroke ratio1.04
Fuel supplyElectronic fuel injection (EFI)Engine displacement2497 cm3 / 152.4 cu in / 152.4 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 power at
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)
CoolantwaterSpecific output
Catalytic converterSpecific torque100.1 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 ratio
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 emissions276 g/km / 444 g/mi / 444 g/mi
  Range655 km / 407 mi / 407 mi

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering detailsPower assisted steering
Turns lock-to-lockTurning circle11.0 m / 36.1 ft / 36.1 ft
Suspension frontSuspension rear
Wheels frontWheels rear
Tyres front225/45-R17Tyres rear225/45-R17
Brakes frontdiscBrakes reardisc
Brake diameter frontBrake diameter rear
Brakes detailsABS (anti-lock braking system), EBD (electronic brake-force distribution), ASC (automatic stabilisation control)Braked area

Technical specifications and performance data of BMW Z4 2.5Si Roadster E85

Infobox

Beyond basic auto insurance

In addition to having enough liability protection, there are some other coverages you should consider:

Collision: Pays for damage to your car resulting from a collision with another car, an object or as a result of flipping over. It also covers damage caused by potholes. Even if you are at fault for the accident, your collision coverage will reimburse you for the costs of repairing your car, minus the deductible. If you are not at fault, your insurance company may try to recover the amount they paid out from the other driver’s insurance company though a process called subrogation. If the company is successful, you will be reimbursed for the deductible.

Comprehensive: Reimburses you for loss due to theft or damage caused by something other than a collision with another car or object, such as fire, falling objects, missiles, explosion, earthquake, windstorm, hail, flood, vandalism, riot, or contact with animals such as birds or deer. Comprehensive insurance will also reimburse you if your windshield is cracked or shattered; some companies may waive the deductible on the glass portion of this coverage.

Uninsured and Underinsured Motorist Coverage: Reimburses you, a member of your family, or a designated driver if one of you is hit by an uninsured or hit-and-run driver. Underinsured motorist coverage comes into play when an at-fault driver has insufficient insurance to pay for your total loss. These coverages are required in 19 states, but available in all. It is important to purchase the same amount of coverage for uninsured/underinsured motorists as you have for liability to others.

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