@Markos - the front bumper center part section was/is definately available both WITH and
WITHOUT the holes in the lower part. The only correct OEM part WITH the holes is one with
the holes in the correct (!) location. The center parts shown in the two eBay ads are OEM correct.
The odd thing however is that there only seems to be ONE part number for both
51 11 1 811 256 to supersede 51 11 1 810 516. (However, EPC errors are many, so NOT
so strange after all ??)
Hmm, I’ve never seen them without but I certainly trust that they exist. My measurement was for the driving light diameter and distance, not the fog holes.
As far as the rears go, BMW must have used externally mounted rear fogs early on.
This BMW ad that I posted shows an early 2800CS with a rear fog minted in the factory rear bumper holes.