The BMW N55 family of engines were released for the 2009 model year, coming in to replace the ageing and troublesome N54 series. At the time, where the competition was busy chasing the highest ...
The M2 CS washed the sins of the regular M2 with an M engine instead of the N55, a slightly hotter S55 than the six-pot that BMW M used in the M2 Competition. The Bavarians didn't make the same ...