German tuner AC Schnitzer brings their new M4 project to the 2015 Geneva Motor Show. Dubbed ACS4 Sport M4, the super sporty tuning project is build on the new M4 Coupe.

The M4 is already a potent car with its 425-horsepower, turbocharged inline-six, but some customers are willing for more power under their foot. The engineers at AC Schnitzer gave their car 510 horsepower and 476 lb-ft of torque. The engine sound was also improved by their in-house built exhaust system with carbon fiber tailpipes.

To improve the ride dynamics, the tuning shop offers two suspension kits that lower the car by 1.0-1.2 inches in front and 0.4-0.6 inches in the rear, or 1.2-1.6 inches front and the back by 1.2 inches with the adjustable racing option.


The basis for the aerodynamic pack is the carbon front spoiler elements, which can be fitted both individually and as a basis for the racing bodykit.

In stage two, the carbon front spoiler elements are supplemented by the new AC Schnitzer racing front splitter. This further improves downforce on the front of the M4 and ensures a better track

The final version of the AC Schnitzer front aerodynamic pack for the M4 includes the carbon front side wings. These are mounted on the front skirt in pairs on the right and left (4 pieces in the set). This arrangement improves air flow along the vehicle sides, further optimizing downforce on the front axle.

With the new AC1 BiColor wheels, AC Schnitzer is giving their M4 a sporting hybrid look, a combination of classic design and sportiness. The AC1 wheels are available for the BMW M4 as lightweight forged alloys in 20 inch, and as alloy rims in 19 and 20 inch.

In addition, Type VIII forged alloys, racing forged alloys and alloy wheels in BiColor black, silver or anthracite, Type V forged alloys in BiColor or anthracite, and Type IV rims in BiColor black are available up to size 21 inch with corresponding tires.

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