What is Integral Active Steering in my BMW?

The Integral Active Steering increases the maneuverability of the vehicle and makes a more direct steering response possible. Driving stability is also increased at high speeds. Integral Active Steering combines the variable steering gear ratio of the front axle with active rear-wheel steering. The rear axle steering acts to increase maneuverability at low speeds by turning the rear wheels slightly in the opposite direction to the front wheels. At higher speeds, the rear wheels are turned in the same direction as the front wheels. For instance, this results in a harmonious lane change. In critical driving situations, integral active steering can stabilize the vehicle by automatically steering the rear wheels, for example e.g. when oversteering.