Naturally, tuning companies offer services like these, and some BMW M models can be ordered with the M Driver Package. The latter bumps the electronic speed limiter up to 280 km/h, but it is usually reserved for cars made by the M division. Regardless, tuners can take care of that aspect for non-M cars from BMW that can handle that task.
The G15 BMW M850i Coupe comes with a 4.4-liter twin-turbocharged V8 unit that will provide 530 horsepower at 5,500 RPMs. It comes with 553 lb.-ft. of torque (750 Nm), which is available between 1,800 and 4,600 RPMs. The eight-speed automatic transmission is also standard, as is the xDrive all-wheel-drive system.
The German coupe can sprint from 0 to 62 mph (100 km/h) in just 3.7 seconds, which is a great result for a vehicle that weighs 4,478 pounds (2,031 kg). Tuners at AC Schnitzer managed to squeeze 611 hp out of the BMW V8 unit with fully homologated parts. Unfortunately, the tuning company has not specified the new top speed of the resulting model.
There is a G-Power tuning kit for the BMW M850i that can bump power to 670 hp and cut the 0-100 km/h (62 mph) time to just 3.1 seconds. That version of the M850i can reach 320 km/h (198 mph) after its limiter is removed.