Upcoming M3 spied at new M test center in Nürburg showing wider wheel arches, bigger wheels and large brakes.

These are the latest spy shots of the 2014 BMW M3 sedan, this time spied testing around the Nürburgring next to the new BMW M test center in the town of Nürburg. We can even see the test center's sign in the photos.

This prototype is still heavily disguised and our spy photographers report it has been fitted with false exhausts. But we do notice the wider wheel arches and larger wheels and brakes.

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