'07 4.8i. Recently refreshed all suspension up front, and shocks and air springs in the rear. Still experiencing some looseness and other handling issues from rear. I'm planning to refresh all control arms, ball joints, and bushings in the rear in the spring.


I can't seem to find any replacement bushings (BMW may call them ball joints) for the inner side of the lower swing arm (part #10 here)


Are those ball joints replaceable separately, or do you need to buy the whole lower swing arm? New ones are very expensive. There's a bit of lateral play in there.