AC Schnitzer BMW Z4 C30

Press Release

The latest member of the BMW family - the new Z4 roadster - has just been introduced to the world's public and at the same time AC Schnitzer presents its interpretation of this Roadster, excellent even in standard form, which already lays justified claim to being a classic of the future. At the Geneva Motor Show 2003, AC Schnitzer presented a complete range of special accessories covering all areas of the vehicle and highlighting the authentic Roadster feeling. All components displayed are currently in the development or fine-tuning stage; they will however all be available during the Spring. For the power plant of the most powerful variant at present - the BMW Z4 3.0i - a performance upgrade is already "in the pipeline". A development achieved in close collaboration with the BMW Motorsport Team Schnitzer, Freilassing. The power of the AC Schnitzer Z4 C30 is increased by supercharger technology. The heart of the upgrade is a turbine supercharger which thanks its toothed belt drive allows almost noiseless running. Only in the upper speed ranges is the characteristic compressor note - totally desirably! - produced. The geometric design of this supercharge means it only needs maximum 38.000 rpm to achieve a boost pressure of 0.35 bar at an engine speed of 6.500 rpm. This increases the output of the standard power plant to a stately 295 HP / 217 kW and brings the maximum torque up by 80 Nm. Thanks to the excellent efficiency of the supercharger, there is no need for an extra charge cooler. The high-tech bearings are permanently lubricated via an autonomous, dedicated oil reservoir. This has the advantage of allowing the two oil circuits to work independently. The scope of supply of the AC Schnitzer C30 performance upgrade also includes the full stainless steel AC Schnitzer sports rear silencer with chromed tailpipe trim in the new racing design and a modified control unit program. The performance upgrade is naturally also available for other vehicles with the M54 B30 engine. Even without the engine tuning - for the BMW Z4 2.5 or 3.0i - we recommend fitting the AC Schnitzer sports rear silencer which optimises gas flow and hence response behaviour. As a "smaller alternative" the tailpipe trim in racing design completes the package. Faster and more precise gear changes promote the adrenalin surge and improve the car's acceleration. So for the manual BMW Z4 3.0i we have adapted the AC Schnitzer Short Shift. To ensure safe control over the driving power of the new BMW Z4 at all times, a special high performance brake kit for the front axle is in development. The internally vented and slotted brake discs measure 334 millimetres in diameter and are 32 millimetres thick. The special calipers are fitted with two 42 mm diameter pistons. Naturally the standard ABS system is retained in full.