BMW M5 Saloon 612-Horsepower

 
The 328i-based ASC3 Turbo won't be the only new BMW model that AC Schnitzer will debut the 2012 Geneva Motor Show in a few days' time as the German tuning house has also scheduled the world premiere of its M5-based ACS5 Sport Saloon. The ACS5 Sport Saloon benefits from an upgraded version of the M5's 4.4-liter bi-turbo V8 with software tune and a custom