M Servotronic.
Take control of any curve with help from the M Servotronic Power Steering. The intelligent system dynamically adapts the steering boost according to your speed.
The BMW M5 obeys the driver's commands precisely at any speed. The power assist reacts with more resistance at high speeds and automatically decreases at low speeds, even on curves, and makes for easier parking. At increasing speeds the power assistance is continually reduced, resulting in more direct contact with the road and excellent high-speed stability.