Ergonomic and aesthetic: the optional Sport seats were developed for drivers with performance on their minds. Integrated air cushions adjust the backrest width to optimally suit your body and driving style. And at the touch of a button, you can adjust the optional four-way lumber supports so that the horizontal and vertical air cushions provide the perfect contact surface between the seat and your back - contact that allows you to experience true roadster driving in pure comfort.
Added convenience for driver and passenger. With electronic seat adjustment you can set your perfect seating position at the touch of a button including the seat height and length as well as the angle of the back rest and (on Sport seats) the angle of the seat. The memory function allows different seating positions to be stored and accessed quickly and easily for different driving situations or different drivers.
The optional storage package for the BMW Z4 Roadster provides a wide range of options so that you never have to worry about where to store the things you need. For example thanks to the cupholder in the centre console, an additional folding compartment on the left of the steering wheel and luggage nets behind the seats and in the passenger footwell. Tensioning belts in the boot are also available to secure large items so that you can be sure that everything inside your BMW will have its own place and that your thoughts are free to concentrate on what really matters - the driving.
The optional lights package gives you the time to take your seat comfortably and safely. As soon as a door is opened, footwell lights are activated to optimally guide driver and passengers to their seats. Conveniently positioned lights in the front and rear of the cockpit provide the perfect backdrop for a true nighttime roadster experience.
Keeping cool on hot, sunny days has never been easier: SunReflective Technology materials incorporate modified dye pigments that reflect light waves towards the infrared end of the spectrum. As a result, the seats, side armrests, leather trims in the doors and side panels, and centre console armrest stay up to 20 °C cooler in direct sunlight than they would do otherwise.
With its compact form (369 mm diameter), the optional sport leather steering wheel provides precise control and a comfortable grip. The paddles for the six- or seven-speed sport automatic transmissions are ideally positioned at the side of the steering wheel which includes integrated multifunction controls for the radio, CD player and optional telephone, as well as two programmable keys. And to ensure that the steering wheel always stays at the optimal temperature, you can choose the optional steering wheel heating or leather with SunReflective Technology.
The standard 4 x 25-watt BMW Business CD radio with six speakers uses antenna diversity for enhanced radio reception whether you are heading to the mountains or the valleys. The radio includes an integral CD player with motorised slot and it can also be connected to a BMW CD changer and will play MP3 files on CD.
The optional Radio BMW Professional extends the BMW Business CD radio by a two-line display for a more detailed presentation of telephone numbers, names and song titles. Combined with the optional DAB/DAB+ tuner it provides digital radio reception in high audio quality. Depending on the transmitter network, it receives a broad range of special-interest channels, while additional information such as title and artist are conveniently shown on the display.
Up to fourteen high-quality loudspeakers fill the cabin of the BMW Z4 Roadster with up to 650 watt of brilliant sound. The optional surround sound system is precisely calibrated to the architecture of the cabin. Three subwoofers, located under the front seats, come as standard and deliver a richer, more detailed bass experience. A pleasure for the ears, even at higher speeds and with the roof down.