The New BMW Z4 2.2i

Chassis and Body

Using lightweight components such as an aluminium bonnet and roll bars integrated into the basic body structure, the Z4 2.2i weighs in at a svelte 1,325kgs - that's 30kgs lighter than its predecessor, the Z3 2.2i and lighter than the 2.5i and 3.0i models too.

However, the car is remarkably strong and scuttle shake is now a thing of the past. Boasting torsional rigidity of 14,500 Nm/degree, the Z4 is almost three times as stiff as its predecessor Z3 (5,600Nm/degree) an unprecedented figure for the roadster segment.

Electric Power Steering (EPS) is an electro-mechanical system, which made its debut in both 2.5i and 3.0i Z4 launch models and is also standard on the 2.2i. EPS consigns the weighty power steering pump to the parts bin and replaces it with a torque sensor and electric motor. The sensor measures the driver's steering input and translates it into a turning angle using an electric motor connected to the steering spindle. Steering feel and feedback can therefore be controlled by software, which provides a precise steering damper effect, optimising the driving experience whatever the road surface.

Safety

Drivers of the Z4 will naturally feel safe, cosseted in a cockpit with high waistlines and permanent rollover protection. Moreover, both active and passive safety is of primary concern on all BMWs and occupant protection is assured in the Z4 thanks to the Advanced Safety Electronics system. This features a control module linked to satellite sensors located in the left and right B pillars, which detect the nature of any impact and activate relevant airbags should they be required. The module also deactivates the fuel pump and alternator as well as breaking the safety terminal on the battery, reducing the risk of fire.