2007 BMW AC Schnitzer Z4 Profile Concept

Take the first ascent of the Mount Everest, the expeditions to the poles or the dive into the 6.77 mile deep canyon of the Mariana Trench. There have always been individuals and extreme characters who have pushed our boundaries and discovered new terrain. An extreme region for automotive tuners, where only a few venture, has always been the BMW M-series cars, in particular the uncompromising Z4