Besides a handful of exceptions, BMW uses power-assisted rack-and-pinion steering on each model. In principle, modern BMWs aren't any unique when compared to the power steering units from forty yrs ago - turning the steering wheel rotates a shaft, which slides a toothed rack with assistance from the hydraulic pump https://stephenvvnkh.bloginder.com/27844991/a-secret-weapon-for-types-of-power-steering-fluid-for-bmw