Viewed from the front, the BMW M4 Convertible stands out most prominently with its powerful contours and a strongly defined three-dimensionality, which lends it a powerfully expressive face. Characteristic design elements leave no doubt that this car is the work of BMW M. There is the modern take on the twin headlight arrangement (with optional LED technology), for example, not to mention the distinctive twin-bar kidney grille with black painted grille bars — which reflect the design of the characteristic BMW M double-spoke wheels and bear the M logo — and the powerfully designed front apron with its trio of large intakes supplying cooling air to the high-performance engine and brakes.

More at http://www.bmwblog.com/2014/04/04/2015-bmw-m4-convertible-world-premiere/