HELP!!!!! X5 Bouncing!!!!!!!!!!!!!!!!!!!!!!!!!

[lflaco]

So here it is, I'm currently deployed in Afghanistan and I just purchased an 05 X5 4.8is in Miami for my wife and she tells me all of a sudden it starts bouncing up and down while she is driving in slow or fast speeds!! But lately it has been gotten worst and sometimes it does it and sometimes it don't. then she says she hears a hissing (sssssssssss) sound when ever she unlocks the car or locks, then when parked the left fender is way lower than the right, also it doesn't raise up or lower like it used to. She says it is really really bad! And Yes I will have her take it to a local shop in Miami, but I don't know of any good places that work on the X5 except the Stealer and Active Auto which I personally know most over there at the shop but they deal more with M3s. I had her check the tire pressure, and my wife is so understanding of the basic car issues as I explain to her that she even checked the rear fusses also for the air suspension. Out of my vast knowledge and expertise I am assuming after I have searched and found almost related incidents that it could be the Struts. Just need some help if anyone had this experience before she takes it to a shop and they see this beautiful fine young lady and rip her off and feed her bull..... But the good thing is that she knows when JACKA$$es are feeding her bull and acting stupid. So I just need to know if any one has had any experience with these related issues, by the way the X5 has 48,XXX. Thanks soo much, please help with some feedback as it is stressful enough just being over here and now her having car issues. Thanks!