With 735 horsepower and a Dinan-tuned suspension, the CarBahn BMW M4 is a precision-guided sledgehammer. Okay, so what the ...

A stock M3 Comp? How about 105 feet? The CarBahn’s brakes are seriously incredible, and because a performance car is only as good as its brakes, well, this thing rocks. Yes, CarBahn’s BMW M4 ...

BMW is hitting the track with two very different kind of wheeled machines: an M4 GTS converted to safety-car duty for DTM, and a wheelchair for the US paralympics team. DTM touring car series.