I 100% agree with everything Propeller said above. I've had these on my X5 for almost a year and my assessment is exactly the same in every way. The first few closures I thought "damn, now I really have to use some muscle to close this thing". Now it is so easy and doesn't seem like effort at all. I just put my hand on the Roundel and give it a firm 'thunk'. Having arm loads, pressing the trunk button on the remote and having it open by itself is absolutely priceless. As silly as it sounds, it is one of my favorite things that I have done to my E53.

Side Note: I love how jealous my Mom is when she seems my trunk automatically open and she has to lift her X3's up herself (insert evil laugh)!! The company says that making them for an X3 is impossible due to the strut size. Sorry Mom!!!

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-Dusty
2007 X3, Montego Blue
1998 Z3 Roadster, Montreal Blue
1996 Z3 Roadster, Jet Black
2016 Miata LE, Soul Red
1981 DeLorean, Stainless Steel
1979 Ferrari 308 GTS, Ocean Blue