BMW finally reveals official Z4 GT3 info

Official looking pics of the BMW Z4 GT3 emerged earlier this month, but until now no details had been released from BMW’s PR spin doctors. However, at the time those first pics appeared it turns out BMW was delivering the Z4 GT3 to customers.

There seems to have been method to BMW’s PR approach, maybe. Now, with customer experience to report on, BMW Motorsport boss Mario Theissen can say stuff like, “The feedback on the BMW Z4 GT3 is extremely positive.” Not real convincing is it. But there’s no reason it shouldn’t be, the Z4 GT3 looks like a right little monster.

As expected the Z4 GT3 car is powered by a 4.0 litre V8 sourced from the M3 GT2. It’s good for more than 480bhp. Other technologies and developments from the Gt2 have been adapted, as well. Things like engine management, ABS, traction control and the sequential shift transmission have all benefitted from previous race experience.

The use of carbon fibre reinforced plastic for the majority of body panels has helped keep weight down to 1200kg. For those not so quick with their sums, that gives the Z4 GT3 a power to weight ratio of around 400hp per ton. That should do.

You can have your very own Z4 GT3 for just €300K (AU$445K). Well, go on then, don’tlet me stop you.

Expect to see the latest BMW purpose-built racer in the FIA GT3 European Championship, the ADAC GT Masters and the International GT Open. Longer one-off 24 hour races such as Nürburgring, Spa and Dubai are also likely to feature the Z4 GT3. Until you see images and action from these events you might have to make do with the images available after the jump.

UPDATE: A brief video of the Z4 GT3 in action at the Nürburgring is available at AUSringers.

UPDATE 25 April: Pics from the Z4 GT3 in practice and racing in the VLN series have been added below.

Love at first sight: the new BMW Z4 GT3

Munich, 22nd March 2010. The BMW Z4 GT3, which was officially launched and completed its first test drives at the start of March, is already enjoying great popularity among BMW Motorsport customers. The first cars have been delivered to private BMW teams, who will prepare them for use in various national and international championships.

“The feedback on the BMW Z4 GT3 is extremely positive,” says BMW Motorsport Director Mario Theissen. “This sports car rounds off our product range, and offers drivers and teams the opportunity to compete in championships in accordance with the GT3 regulations – such as the FIA GT3 European Championship, the International GT Open or the ADAC GT Masters – as well as at 24-hour endurance races.” In addition, the BMW M3 GT2, the BMW 320si WTCC, which complies with Super2000 regulations, and the close-to-production BMW M3 GT4 are also available to customer teams from all over the world at BMW Motorsport Distribution.

The production model of the BMW Z4 is already impressive: with its elongated bonnet, flared wheel arches, long wheel base and narrow projections, the car boasts an unmistakable appearance. The two-seater provided BMW Motorsport engineers with a good basis for developing a close-to-production GT3 racing car.

The largest difference between production and racing car can be found under the bonnet: while the production version of the BMW Z4 is driven by a six-cylinder engine, the GT3 car is powered by a 4.0-litre eight-cylinder engine similar to the unit used in the BMW M3 GT2. This powerful heart produces over 480 bhp. Its excellent performance characteristics and good torque curve make the base engine from the production version of the BMW M3 predestined for use in motorsport.

The fitting of the V8 engine had a considerable influence on the development of the BMW Z4 GT3. Initially, design-space examinations were performed using CATIA V5 design software, in order to place the engine in the ideal position and meet racing specifications. The engineers then added all the other components.

When it comes to electronics, the private teams can look forward to innovative BMW solutions, which have already been tried and tested on the BMW M3 GT2: the modern ECU408 takes over the engine management, while the Power400 electronic control unit is responsible for controlling all the actuators. The power is transmitted through a six-speed, sequential gearbox with “Quick Shift” function.

Rims with central locking and safety clip are also included in delivery. In addition, the BMW Z4 GT3 also offers driver assistance systems such as racing ABS and traction control, which have been adopted from other cars in the customer racing range, and then further developed and modified for use in the GT3 car.

The front axle of the BMW Z4 GT3 is a completely new design, based on a series concept. It is equipped with a tubular stabiliser bar with adjustable blades. The rear axle is designed as a longitudinal link axle, as with the series version of the BMW Z4. The steel body of the car comes from the BMW Plant in Regensburg. A safety cell made of extremely rigid, precision steel tubing is then welded into the body. The engine block of the V8 engine is produced in the BMW foundry in Landshut. The BMW Plant in Dingolfing contributes the rear axle differential and drive shaft, among other things.

During the development, BMW Motorsport engineers worked hand in hand in other areas with their colleagues from series production. This allowed them to access calculations from the field of computational fluid dynamics (CFD) when designing the car’s aerodynamics. Furthermore, tests were also carried out in the wind tunnel and on the BMW Group’s test benches.

Front and rear wings, bonnet, roof, fender and many other components are made of carbon fibre reinforced plastics (CFRP). Using this lightweight, torsion-resistant material contributed significantly to reducing the weight of the BMW Z4 GT3 to 1,200 kilograms.

As with all cars in the BMW customer racing range, the emphasis was also put on cost-efficiency when developing the BMW Z4 GT3. As a result, the car offers a very good cost/performance ratio and gives private teams the opportunity to participate in affordable motorsport at the highest level.

The BMW Z4 GT3 is available as a racing car at a cost of 298,000 Euros (plus VAT). Interested teams can find further information at: Z4GT3@bmw-motorsport.com.