German premium automaker – BMW says its modified 2011 Z4 GT3 has proved itself in a series of intensive tests over recent weeks. The goal of the latest modifications was primarily to improve aerodynamic efficiency.
Noticeable improvements done on the new version include an elongated bonnet, a long wheelbase, and the narrow wheel arches. The car was also given a steel body courtesy of the BMW plant in Regensburg, Germany and a safety cell made of sturdy steel tubing that’s welded into the body.
Another difference between the Z4 GT3 race car and the production model on which it’s based can be found under the bonnet: while the production version of the BMWZ4 is driven by a six-cylinder engine (and soon a four-cylinder engine as well), the GT3 car is powered by a 4.4-liter V-8.The engine is mated to a sequential 6-speed transmission.
When it comes to electronics, the private teams can look forward to innovative BMW solutions: 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. Gearshifts are now initiated using two paddles.
Although the car has a steel body, it is extremely rigid, as is the steel tubed safety cell, which is welded into the body. The V8 engine block is made in the BMW foundry in Landshut, Germany.
The car is now being sold to racing teams for €315,000, which is about $454,000 based on current exchange rates.