Long hood, short overhangs, low center of gravity, soft top - the two-seater sports car that has rolled at the BMW test center in Miramas in the south of France is instantly recognizable as a thoroughbred roadster. It's about the new BMW Z4 M40i that is being pushed to the max with driving dynamics tests to fine-tune all transmission and suspension systems.
This refreshed Z4 has a powerful 6-cylinder in-line engine, a lowered sports suspension with electronically controlled shock absorbers, a newly developed front axle, M light alloy wheels, an M sports brake system and an electronically controlled lock on the rear differential. .
As NurburgringIn Germany, the Miramas test center offers the perfect conditions for the new BMW Z4 to demonstrate its potential and dynamic qualities. Used by BMW to develop and test new models for more than 30 years, the center comprises a long oval and a ring road for high-speed tests, as well as slalom, circular tracks and circuits with very different types of surface.
These are currently being used for the development and optimization of the roadster's acceleration, steering and brake response. For example, the final form of the adaptive M suspension, as it interacts with the rear axle's limited-slip differential, is developed on a circuit that is also used for testing purposes by BMW Motorsport.
These intense tests already indicate that the new version of the roadster will offer a tangible increase in the sportiness of the new BMW Z4. The new generation will present particularly effective improvements in terms of dynamism, agility and precision when changing direction and accelerating through curves, without losing comfort.