Following a series of exhaustive test drives held as part of the development process to prepare it for series production, the latest incarnation of the BMW 4 Series Coupe is now embarking on the final phase of dynamic testing.
It’s driving qualities were honed at winter testing centre’s in Sweden, France and the Nürburgring’s Nordschleife circuit as well as various other race tracks.
Road and race-prepped
Engineers will put the final touches to the chassis technology of the 2-door model on the motorways and country roads around the German brand’s Group Research and Innovation Centre in Munich.
The proportions, aerodynamic properties and weight distribution of the two-door car provide the ideal basis for a chassis set-up focussed on dynamic performance.
A direct comparison with the new 3 Series highlights the new model’s profile clearly. It sits 57mm lower than its four-door counterpart and 21mm closer to the road as well.
High-end tech at work
The development team took a model-specific approach by incorporating chassis technology and connecting the suspension to the body. At the same time, the double-joint spring strut front axle and five-link rear axle configuration means the dialling up of performance doesn’t come at the expense of comfort on everyday drives and long journeys.
The range will now be spearheaded by an M model in the shape of the new M440i xDrive Coupe. It is powered by a straight-six engine delivering 275kW, while also featuring 48V mild-hybrid technology, with a 48V starter-generator and a second battery. Power is sent to all four wheels via an 8-speed Steptronic Sport transmission.
Besides improved efficiency, the benefit is punchier power development when the driver hits the accelerator hard. The additional 8kW generated by the electric boost effect underpins fast off-the-line getaways and in-gear sprints.
There is also an M Sport differential on hand to make sure that drive power is deployed to optimum effect in demanding driving situations. The custom-tuned chassis elastokinematics, powerful M Sport brakes and 18-inch M light-alloy wheels with mixed-size tyres are likewise contributory factors in the precisely controllable dynamics of the new Coupe.
The final round of testing will allow the engineers to fast-track their latest findings into the fine-tuning process at the Research and Innovation Centre.