2009 Bmw Z4 Roadster: full details revealed

Article by Christian Andrei, on August 29, 2010

Different other storage spaces are built into the interior. The latest Z4 provides storage trays in the middle console, a glove compartment that has 10 liters of space, hinged compartments in the doors, and more space behind the seats. Together with the Cold Weather Package is a storage pack that offers an even expanded storage and loading functions, together with fastening nets on the rear panels of the seats and in the passenger's foot area, lashing belts in the luggage section, including a storage box in the partition going to the luggage section.

The through-loading system option, along with a transport bag, guarantees even superior adaptability, permitting the owner to pack trim things like two couples of skis with a length of up to 67 inches or two. A winning idea with a grand tradition: inline-6 powerhouses in the latest Roadster by BMW. Graceful roadster lines, the distinct BMW kidney grill, and an inline-6 unit shape a blend that, in 1934, made the BMW 315/1 an unparalleled hit both on the street and on the track.

That blend has been maintained by the BMW Z4 for today. The latest Z4 is thus being inaugurated solely with inline-6 units, a selection of two powerhouses offering both potency and performance. These special powerhouses demonstrate modification and rapid-revving response standard of a BMW 6-cylinder, providing an unsurpassed harmony of fuel-economy and performance in the finest roadster category courtesy of the engineering strategy of BMW EfficientDynamics.

The individual variants of the latest BMW Z4 are equipped with on-demand management and control of the accessory drives of the vehicle, an adaptable oil pump, intelligent lightweight technology, and optimized sleek design. The latest dynamic version of the Z4 is equipped with the first inline-6 engine in the world to highlight dual turbochargers, High Precision Injection, and a crankcase that is all-aluminum. Unparalleled response on a turbocharged unit is guaranteed by the utilization of two turbochargers with each supplying three cylinders.

The powerhouse attains a top torque of 300 lb-ft devoid of the slightest delay, and keeps this high level of torque throughout a wide rev variety of 1,400's 5,000 rpm. The highest yield of 300 hp is attained at 5,800 rpm, and the BMW Z4 sDrive35i sprints from 0 to 60 mph in just 5.1 seconds, the same sprint by an optional seven-speed double clutch sport automatic transmission is reached in 5.0 seconds).

The top speed is electronically-limited 130 mph and 150 mph when it comes with the optional Sport Package. The Z4's efficient performance is owed to High Precision Injection. Injecting fuel straight into the combustion cavity provides a cooling effect permitting a better compression ratio and optimized burning efficiency. Developed by BMW, this second-generation direct gasoline injection engine guarantees considerable advantages in fuel economy without limiting the active traits of the powerhouse.

The 6-cylinder normally aspirated engine: powerful and light thanks to magnesium.Providing unprompted potency and performance, outstanding motoring modification and exceptional efficiency, the 6-cylinder naturally-aspirated unit in the BMW Z4 sDrive30i once more provides the finest in its category. Tipping the scales at just 355 lb courtesy of its composite magnesium/aluminum crankcase, cylinder head cover created from a unique synthetic material and lightweight camshafts that comes with aluminum VANOS control unit, is remarkably light.

Although BMW's VALVETRONIC powerhouse management regulates valve stroke on the intake valves, double-VANOS adapts the angle of the intake and outlet valves in an endless procedure. This permits uniquely efficient usage of fuel, offering a muscular torque curve and giving the powerhouse instantaneous response. The unit in the BMW Z4 sDrive30i generates a maximum yield of 255 hp from 3.0 liters capacity at 6,600 rpm. Peak torque of 220 lb-ft, in turn, is achieved at just 2,600 rpm.

With this kind of potency, the BMW Z4 sDrive30i sprints from 0 to 60 mph in 5.6 seconds and with the optional sport automatic the time is 6.0 seconds. Maximum speed is 130 mph which is electronically limited or 150 mph when equipped with the optional Sport Package. 6-speed transmission with short gearshift travel featured as standard.Without exception, all the copies of the latest BMW Z4 is equipped with a 6-speed manual gearbox. Designed particularly for BMW's latest Roadster, the different transmission alternatives are chiefly sporting in their attributes. Certainly, this is demonstrated in particular by tremendously short gearshift movement, much shorter in contrast to all other current BMW versions that come with a manual gearshift.

The 7-speed sport automatic that comes with double clutch and 6-speed sport automatic with paddle shifters is optional. Patterned on the M DCT transmission presented in the BMW M3, this 7-speed gearbox guarantees quicker sprint and additional performance in contrast with the 6-speed manual gearbox, at the same time offering the comfort highlights of a BMW automatic transmission. The 7-speed double-clutch sport automatic changes gears devoid of the slightest power interruption. With its seven-speed sport automatic, the BMW Z4 sDrive35i sprints from 0 to 60mph in just 5.0 seconds, although its fuel usage is anticipated to outdo the fuel efficiency on an identical version with a manual gearbox.

An option of either automatic (Program D) or manual gear selection is offered to the driver by the Sport automatic. The driver may change gears manually via paddles on the steering wheel, if he so desires. The 6-speed sport automatic transmission offered on the BMW Z4 sDrive30i advances not only driving comfort, but also the athletic performance that is expected of a roadster by BMW.

In fact, the attributes of the vehicle are ascribed to the direct connection linking the transmission to the powerhouse, founded on contemporary torque converter technology with an included torsion damper, avoiding needless slippage and thus aiding to remove any power loss and performance. Even the smallest amount of movement of the accelerator, therefore, is transformed suddenly into a rapid response with significantly lowered gearshift times. When desired, the driver is offered the opportunity to shift manually courtesy of the sport automatic transmission.

The driver, besides selecting gears via the selector lever on the center console, can also employ the steering wheel-mounted gearshift paddles. Stylish suspension technology, brakes that are high-performance and lightweight, rear-wheel drive, almost perfect weight distribution, the lengthy wheelbase and the low center of gravity on the roadster make for perfect conditions for superior dexterity. Highlighting standard spring-struts, a "double-jointed" front suspension made mainly of aluminum, and a stable-geometry rear axle, the latest Z4 is equipped with established suspension concepts in an arrangement ideally customized to fit the vehicle's attributes.

An important role is played by electric power steering in the latest BMW Z4, improving the accuracy and comfort of steering maneuvers and lowering fuel usage, because the electric motor for steering power assistance is driver-deployed when required or desired. Featured also on the latest BMW Z4 are new high-performance brakes that come with low weight and low brake pad wear ability. Simultaneously the BMW Z4 is the first vehicle in its category to highlight an electrical parking brake activated and released with a push of a button located on the console in the middle. Both models of the Z4 are equipped with 17-inch light-alloy wheels and with runflat rubber as standard in addition to a Tire Pressure Monitor.

The standard BMW Dynamic Stability Control (DSC) acts not only to activate the ABS brakes and guarantees constancy on slick surfaces by activating the brakes or lowering engine power, but also constitutes other functions like Brake Drying and Brake Standby with a Start-Off Assistant. Behaving in the same way to a mechanical limited slip differential, DSC electronic rear brake control is utilized to create a limited slip differential for stronger sprint in turns.

Activating Dynamic Traction Control with a touch of a button, the driver is able to boost the response thresholds for intervention by the DSC, therefore taking advantage of the option, for instance, to drive on loose snow with the drive wheels slightly spinning. And when so needed, the driver is also able to disable DSC altogether, although the ABS remains activated. The suppleness of the BMW Roadster may be improved more by purchasing the optional Sport Package highlighting Adaptive M Suspension that is equipped with Electronic Damping Control.

The "compression" and "rebound" stages on the four twin-sleeve gas pressure dampers are adapted by a central control unit to offer maximum response all the time. The time for response is so quick that a signal given by a front wheel that hits a hole in the road gets to the rear dampers and makes the appropriate adaptations even before the rear wheels hit the same hole. The driver of the latest Z4 is allowed to choose the drive attributes of the vehicle by the Dynamic Drive Control. Additionally, changing damper forces on the Adaptive M Suspension, DDC also prepares the responses of the accelerator, the power steering, and the response thresholds of Dynamic Stability Control.

The adjustable gearshift algorithms are adapted if the vehicle comes with either sport automatic transmission. The Dynamic Drive Control is activated by the driver through a button on the middle console beside the gear selector. By pushing the button, the driver is able to select from the NORMAL, SPORT and SPORT+ modes, therefore turning on a pre-arranged, ideally balanced configuration. For instance, the SPORT mode provides more-direct steering action and a more-direct response to the accelerator. The SPORT+ mode, on the other hand, in addition provides to activate the Dynamic Traction Control mode of DSC, deliberately permitting slight wheelspin and thus aiding the driver to take a curve in a controlled glide.

The latest BMW Z4 is a little larger externally than its precursor, at the same time providing considerably more comfort with regards to roominess and much more space for loading. The BMW's latest Roadster is 5.8" longer, 0.4" wider, and 0.3" lower in contrast. The current wheelbase has grown by 0.1 inch to 98.3 inches. Aside from visibility on every side, the inside design provides more headroom, about plus 0.20 inches, additional shoulder room, about plus 0.79 inches and extra elbow freedom, about plus 1.69 inches. The door opening, boosted by 1.02 inches, permits even more convenient access even with the top up. The exceptionally rigid bodyshell, lightweight design and near 50/50 weight distribution improve both the safety and suppleness of the latest BMW Z4.

Subframes that are high load-resistant, optimum usage of crush zones, the exceedingly tough passenger compartment and totally efficient restraint systems guarantees excellent accident protection. Frontal and head/thorax airbags, belt latch tensioners and belt force limiters are deployed by the sensor-controlled electronic safety system as a function of the type and severity of a crash.

The head/thorax airbags are incorporated on the outside of the seat backrests and blow up over a large area in the event of a broadside crash. Making its premiere in the BMW Roadster: the latest generation of iDrive.The latest Z4 is the first BMW Roadster to include the iDrive control system as a component of its navigation system option. In the latest Z4 the iDrive acts to activate all entertainment, information, navigation and telecommunication tasks. The system itself is made up of a Controller on the center console and a folding, high-resolution Control Display on the instrument panel, permitting the driver to instinctively and safely control every function on hand. Pushing the direct selection buttons on the freshly arranged Controller, the driver is able to instinctively transfer to the functions of CD, radio, telephone and navigation.

The series of direct selection buttons has currently been limited to the three MENU, BACK and OPTION command buttons, and favorite buttons that can be programmed from the instrument panel permit the user to save and select radio stations directly, telephone numbers and navigation destinations, and other menu items offered directly via iDrive. Coming with a size of 8.8 inches, the high-resolution Control Display with its 1,280 x 480 pixel res provides outstanding lucidity in graphic presentations or internet pages. An image of the Controller shown in the Control Display provides the driver superior and clearer direction in opting for the succeeding step in the operation.

Employing the navigation system has become even effortless because of the iDrive. For instance, a full-screen map presentation provides a supremely detailed outline of the area in which the driver is presently driving. As an option the Control Display also provides a help window giving further highlights and maps autonomous of the central map. With navigation data installed on an 80 GB hard disc fixed in the vehicle, access times have become shorter than ever. The hard disc can also be utilized music archive with 15 GB of disk space. Roadster-specific climate comfort and leather with Sun Reflective Technology.The latest BMW Z4 comes with a standard air conditioning and seven blower stages.

Alternative automatic climate regulator permits individual temperature selection on both the driver's and passenger's side, separate, automatic temperature control in five steps of strength, and manual adaptation of air layering. With the top down, automatic climate regulator incorporates convertible mode. Similar to Convertibles by BMW, the leather in the new Roadster comes with Sun Reflective Technology. A unique, highly inventive type of leather on the seats, interior panels, and steering wheel considerably lowers the effect of direct sunlight. Treatment of the leather in Sun Reflective Technology does its part to incorporate unique color pigments into the leather to redirect harmful infrared radiation from the sun.

Top-end audio and communication systems.The BMW Z4 comes with an audio system that sets standards in the category in every area. The CD player installed as standard series equipment also is capable of playing audio files in the MP3. The installed premium hi-fi system is equipped with up to 14 loudspeakers and two extra subwoofers for a powerful and precise audio experience, with loudspeaker output of up to 650 watts.

A typical AUX-In port is offered, permitting the combination of a variety of external MP3 players. Available also is a 6-disc CD/DVD changer in the glove compartment. Connectivity via Bluetooth is offered in combination with optional BMW Assist to provide greater protection and convenience for making telephone calls while mobile. To totally include the most current smartphones in the vehicle, the latest BMW Z4 also comes with an option of smart phone integration.

Topics: bmw, bmw z4, roadster

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