Originally Posted by Fifty150hs

Don't waste your money on the ball joint kit from Harbor Freight. It will not work on the X5. The way the rear carrier is made doesn't allow enough room for the tool to seat properly. Believe me, I tried that tool first.

This is the tool you need: https://autoplicity.com/9235446-baum...joint-tool-kit

See the the flat part? That allows it to clear the bolster on the carrier that keeps the Harbor Freight tool from working.

Or you can search around some more on Youtube, there's one on there from a guy that made his own tool out of steel pipe and flat stock welded together with part of the side cut away to provide that clearance.