Knocking noise when turn right

Hello, it's difficult to determine what could be causing a knocking noise without a good physical inspection. Much can be gleaned by having the vehicle in the air on a lift and inspecting the steering and suspension, for example. A knocking noise could be coming from a loose or worn steering or suspension component. Have the vehicle inspected for some clarity. Good luck! For a repair shop near you, click this link: http://repairpal.com/bmw-within-10-miles-of-rio-rancho-new-mexico-87124