Before opening it... You do realize that this is a wheel with a lot of resistance to turning (at least on my car)? It will feel like it doen't want to move and if you do move it slightly, it may roll back to where it was. Be sure to put enough pressure on it to move it - without breaking it if it is indeed "stuck." How do you know the difference? Trial and error.

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2006 X5 Sport 4.4i