I have a problem with my Z. There is a knocking sound coming from the right side suspension.Lately the problem has gotten to the point where the tire on the right side is wearing on one side and a wobble has appeared. Many friends have told me that it sounds like a bad ball joint, but when I went to replace it, it was fine. Since then I have found that the sound is coming from the top of the strut. Can you give some insight on my problem.