Except for a few exceptions, BMW utilizes power-assisted rack-and-pinion steering on each design. In concept, modern-day BMWs are not any unique as opposed to power steering programs from 40 years ago - turning the steering wheel rotates a shaft, which slides a toothed rack with help from the hydraulic pump https://collisionrepairnearme85158.bloggip.com/27296679/the-greatest-guide-to-types-of-power-steering-fluid-for-bmw