As it turns out, those rumors about an M4 GTS concept were spot on as BMW has unveiled the very desirable high-performance coupe at this year’s edition of the Pebble Beach Concours d’Elegance. It serves as a sneak preview for the production car which is set to employ a water injection system. Those who are curious to find out how it works should know that water is injected as a fine spray in the intake manifold’s plenums and when the water vaporizes it cools down the intake air.
Thanks to this technology, the compression temperature in the combustion is significantly reduced, enabling the engine to operate at a higher boost pressure and provide quicker injection timing. In this concept, the tech has been implemented in the six-cylinder, 3.0-liter TwinPower Turbo engine but details regarding output are not available at this point.
The BMW M4 GTS concept wears an appealing Frozen Dark Grey Metallic exterior paint scheme contrasted by the Acid Orange accents. It also has some carbon fiber components such as the front splitter, rear wing and hood while at the back there are OLED taillights. These utilize organic light-emitting diodes which are considered to be superior compared to regular LEDs and are also more flexible which opens up new possibilities for car-related lighting solutions.
BMW has installed 19-inch front and 20-inch rear lightweight alloy wheels wrapped around in Michelin Sport Cup 2 tires measuring 265/35 R19 on the front axle and 285/30 R20 at the back.
Another interesting feature is the main radiator which works together with additional radiators to cool down the high- and low-temperature circuits, turbocharger and transmission. BMW says the turbo installed in the M4 GTS concept benefits from an indirect intercooler assisted by an extra electric water pump.
The production version of the M4 GTS concept is expected to be launched in the months to come and BMW says some of the concept’s technologies will be implemented in the road-going car.