Hello! I have a bmw 316i from 1997, I have a problem with steering. When I run about 60-80 km/h (i am alone in the car) and I steer to the right even little steering I feel like my steering wheel is shaking and noisi knocks and the knocks I feel is under the hood. When I am full loaded (4 persons) the same thing happens but over 90-100km I start to feel the knocks when I steer to the right. When I steer to the left I have no problem even 160km! What is the reason? (Sorry for my bad english : ) )
Check the wheel balance. Make sure the tie rod ends (inner and outer) are in good condition, with no excess end play. Check the ball joint and lower control arm bushings. It isn't likely, but there may also be a problem with the steering rack itself.