By Otsile Kadiege

BMW lifted the veils off a new Z4 M40i Pure Impulse edition which introduces exclusive exterior and interior styling, a 6-speed manual transmission for customers who like rowing gears themselves and refined chassis tuning.

Z4 Pure Impulse edition exterior

The Pure Impulse edition adds individual design features to the exterior of the BMW Z4 M40i, giving the roadster a sharper look. They include the M High-gloss Shadowline trim with extended features – which also incorporates the exclusive model badging on the front side panels and the vehicle’s rear end – as well as the exterior mirror caps painted in Black high-gloss, specially designed flaps for streamlining the airflow in the area around the rear wheel arches, a combination of 19-inch and 20-inch M light-alloy wheels and red brake callipers for the M Sport brakes.

New exterior colours also form part of the Pure Impulse edition’s specification. Examples for European markets have a Frozen Deep Green metallic finish, while models destined for the USA sport the Sanremo Green metallic body colour. Further exterior paint finishes from the familiar range of colours for the BMW Z4 can be selected as an alternative to the new variants.

Z4 Pure Impulse interior

Inside, the Pure Impulse edition includes M-specific design features for the interior supplemented by a number of exclusive details. For instance, there is an M gearshift lever with model-specific sleeve on the centre console that is used to control the special-edition model’s six-speed manual gearbox. The Vernasca leather trim in Cognac with black M piping is complemented by interior trim strips in Black high-gloss.

Z4 Pure Impulse performance

Powering the BMW Z4 M40i Pure Impulse edition is a 3.0-litre straight-six engine with the latest M TwinPower Turbo technology developing a maximum power output of 250kW (current Z4 M40i in SA makes 285kW) and has a peak torque output of 500Nm.

It’s paired with a 6-speed manual transmission specifically developed for the exclusive model. It’s a BMW modular transmission incorporating M-specific components for the gear set and shafts that has been modified for the straight-six engine’s output. The outer shift mechanism, comprising the shift lever, its guide and the connection to the transmission, has likewise been custom made for the Pure Impulse edition of the BMW Z4 M40i. BMW claims zero to 100 km/h is achieved in 4.6 seconds.

The exclusive chassis technology aboard the special edition features bespoke auxiliary springs at the front and rear axles. A specially reinforced anti-roll bar clamp is also fitted at the front, while both the mapping for electronic control of the rear dampers and the software for the variable sport steering have been newly adjusted. In order to achieve sharper handling characteristics that will be appreciated by driving purists, the development team also equipped the traction control and M Sport differential with model-specific control logic.

Another new feature on the chassis side relates to the wheel sizes, as different-size wheels are being fitted to the BMW Z4 M40i for the first time. The new M light-alloy wheels in double-spoke design with a Black high-gloss finish measure 19 inches in diameter at the front axle and 20 inches at the rear.