Thank you for the recommendation & comments
I'm in the process (documents) to get a 2012 X5M (26.000km) actually the 4.4i/A 2004 was practically sold!
I could not make the change because of the "documentation", the car is based in a different place I live.
If belt & alternator last a little longer, it was changed just 7000km ago.. I'd tell next owner.