Is this part on your X5??
 

I would like to know if the bracket (marked with an arrow below) is fitted to your X5. It is the piece attached to the car, not the detachable towbar holder which is bolted to it. It should be on the left side of the wheel well (It is on our RHD cars).
Thanks

http://img.photobucket.com/albums/v7...towball001.jpg