If you can't go into a BMW dealership parts dept. and say "I'd like rubber wiper insert refills for my e39" and get the right part for the right price, then I would meet with the dealership manager and/or report them to BMWNA. That is not acceptable.
'07 335xi 6-spd 4dr, Montego blue
'98 540i 6-spd Sport, Jet Black II
'92 325i 5-spd 4dr, burgundy