Since you are in the mile range where suspensions need to be rebuilt and you don't know the history of your X, I suggest you find a well recommended Indy shop and have them do a thorough inspection of your X, a post purchase inspection. If you can, stay while they do the inspection and ask them to show you how they know what needs to be addressed . That will give you a second in person opinion and get back to us with what they find. If the suspension needs other work it is better to have it torn down only once and be done with it.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas