Putting a standard BMW M4 Coupe next to the M4 GTS is like comparing a fast runner to an athletic sprinter. A typical BMW M4 may be the performance version of the 4 Series, but the M4 GTS is the one with steroids. However, a recent project by German tuner Alpha-N Performance has resulted to a tweaked M4 Coupe that has enough capability to beat the M4 GTS.
The tweaks implemented by Alpha-N Performance on the M4 Coupe aren’t your ordinary modifications. After all, the Alpha-N Performance’s BMW M4 was able to complete a lap in the Nurburgring circuit I Germany faster than the record set by the BMW M4 GTS. Nurburgring has been a benchmark for performance in the auto world – considering its complicated course -- and carmakers as well as tuners have been trying to prove their vehicle’s worth by doing a run in the so-called Green Hell.
Alpha-N Performance started out with some modifications on its biturbo 3.0-liter straight-six engine. Ordinarily, this engine could deliver 425 hp (431 PS) of max output as well as 406 lb.-ft. (550 Nm) of peak torque, allowing the M4 Coupe to sprint from zero to 60 mph in 4.1 seconds via a standard six-speed manual transmission (3.9 seconds with M-DCT transmission).
Alpha-N Performance installed “bespoke software” for the biturbo engine, resulting to a huge surge in max output, which is now pegged at 560 hp. This output level is higher than what the mill inside the M4 GTS could deliver -- 500 hp max output.
Of course, other modifications were also made. For instance, Alpha-N Performance borrowed the transmission software from the GTS to ensure that its seven-speed, dual-clutch transmission would be able to adopt the extra power. Alpha-N Performance also borrowed the differential and the settings for the stability control system while replacing the standard suspension with an adjustable Öhlins’ coilover setup. Additionally, Alpha-N Performance made the M4 Coupe ride on lightweight 20-inch OZ Racing alloy wheels.
Alpha-N Performance also made efforts to make the M4 Coupe lighter, which was achieved by installing a custom carbon fiber hood with built-in air outlets. The tuner also installed a bespoke front bumper that doesn’t only offer more downforce but also directs air flow to the brakes. Alpha-N Performance likewise installed a carbon fiber rear wing to generate more downforce. Of course, the modifications also include some interior changes, like the fitment of Recaro bucket seats.
The result of these tweaks is a BMW M4 by Alpha-N Performance that was able to complete the Nurburgring circuit in just seven minutes and 20 seconds, which is faster than the seven minutes and 28 seconds of the M4 GTS.