It’s already been a year since the BMW M4 debuted and now BMW is previewing the higher performance M4 GTS as a concept at the Pebble Beach Concours D’Elegance in Monterey, California. When the M4 GTS arrives it will be the first special edition version of the latest M3/M4 models.
BMW says that the M4 GTS has been further optimized for use on the road and race track. The concept also showcases new technologies that will debut on other BMW models later this year. First is a new water injection system that adds a significant power increase and new OLED (organic light-emitting diode) taillights.
The M4 GTS concept stands out from the regular M4 with its manually adjustable front splitter and rear wing – both exposed in carbon fiber. It also gets a CFRP (carbon-fiber-reinforced plastic) hood, which lowers the car’s weight and center of gravity, plus a wide front air intake optimizes airflow and minimizes front axle lift.
The M4 GTS concept is powered by a 3.0L turbocharged six-cylinder engine that uses a new water injection system to increase the engine’s horsepower and torque specs. BMW says that the water injection system injects water into the plenums of the intake manifold as a fine spray. When water vaporizes and goes through its phase transition absorbs heat, cooling the air intake significantly. As a result, the final compression temperature in the combustion chamber – and therefore the engine’s tendency to “knock” – is reduced, enabling the turbocharged engine to use higher boost pressure and earlier injection timing.
BMW has not announced a production date for the M4 GTS.