I ONLY thing I can think of...
These lights are H11.
My X5 is 2002/01.
If I'm looking thing up properly on realeom etc, the lights should be H3 up to 2002/10, and then change to H11.
Both H3 and H11 lights seem to be 12v 55W.
But the PO maybe installed H11 lights?
Though I don't get it, H3 lights are so small, I don't know how they would even mount in the fog light housing...