The F32 4 Series Coupe and F33 4 Series Convertible have finally shown one of its most important signature design elements (and on any BMW) - the kidney grilles!
As expected, the kidney grilles of the coupe are sportier (thinner, shapelier and wider) than that of the F30 3 Series sedan.
A close look reveals a different number of slats and differing designs for the grilles on each side - 11 flatter slats on the driver side versus 9 'kinked' slats on the passenger side. We are likely looking at the separate grille designs for the different 'lines' that the F32 and F33 will be offered in (just like the F30 sedan). The closeup image of the hood and front end also reveals extra camouflage panels on top the hood (on each side) which give the false impression of a more bulbous and raised hood.
The F32/F33's styling and stance are sportier, lower and wider than the F30. The F32 coupe may also have a small integrated bootlid spoiler which we've spotted in previous pics (reposted below). These prototype still wear some heavy camouflage and although the actual production headlights are still covered, once exposed should reveal a sleeker version of the F30 headlights, but also connecting with the grilles like on the F30.