Here are the latest spy shots of a finished production prototype on its way to an internal event within the depths of the Munich BMW complex in Germany.
The comparison to the current 3 Series coupe the E92, the 4 series has a slender roof line with a more defined rear end.
The rear quarter windows have been elongated to make the hofmeister kink.
Surprisingly the front quarter panel vent was fully on show, which I am sure this will not make it to the final production, as it doesn’t really imply the usual BMW styling cues. The F32 shares the same side mirrors as the F30.
This is likely a 435i (or 440i), as given away by the exhaust system, Sport Line model and the visible parts of the front bumper show differences from the F30 Sport Line front bumper. There is a more prominent center U shaped trim piece which dips down from the inside of the air vents and forms a prominent lip below the license plate area.
It also looks to be either black or carbon fiber.
As for the kidney grilles, we have already seen what shape the F32’s kidney grilles will take on previous spy photos. They will be wider and sleeker shaped compared to the F30 sedan. The headlights are expected to be a sleeker version of the F30 headlights, and also connecting with the grilles, as on the F30.
This car wears 19″ M Sport Wheels and runs 225 tires up front with 255 rear tires. The F32 435i/440i’s brakes match that of the F30 335i – fixed M Sport calipers in front (4 piston) and floating rear calipers (1 piston).
The 428i Coupe and Convertible will be powered by the same 2.0L twin turbo inline 4 as the F30, but the 435i (or 440i) may very well usher in the successor to the current N55 twin turbo inline 6 engine. Both engines will be available with either a manual transmission or 8-speed automatic, and both should also be available with x Drive.
The F32 4 Series Coupe will begin production in spring 2013 and the F33 Convertible’s production will follow later in 2013. A concept 4 Series is reportedly headed for the 2013 Detroit Auto Show in January.