30/10/2026
With a time of 7:25.8 minutes, the BMW M235i-based ACL2 was the fastest road-legal BMW on the Nürburgring Nordschleife in 2016. Its standard engine was replaced with a unit from the BMW M4, upgraded to 411 kW/570 hp, the top speed limit was removed via software, and a rear-axle limited-slip differential with a locking range of 25 to 95 per cent was fitted. Thanks to this power output and the weight reduction achieved, the ACL2 boasted a power-to-weight ratio of just 2.59 kg per hp, which overshadowed even a Ferrari 458 Italia or the Porsche 911 GT3 RS. Of course, the lightweight construction and aerodynamic conversion – designed to maximise downforce – involved extensive modifications: lightweight forged wheels, a carbon-fibre bonnet, carbon-fibre aerodynamic components, the removal of the rear seats and the replacement of the front seats with carbon-fibre racing bucket seats are just some of the measures carried out. What else was involved? Here is the ACL2 in detail: https://www.ac-schnitzer.de/en/acl2/