FYI, here are the Part Numbers for the TM3 Roof rack cover plates (i recently lost one and logged a ticket with support):
M3, ROOF RACK, FRONT LH, COVER
1145397-00-A
M3, ROOF RACK, FRONT RH, COVER
1145398-00-A
M3, ROOF RACK, REAR LH COVER
1145399-00-A
M3 ROOF RACK, REAR RH COVER
1145400-00-A...