Sorry I never got back about the door lower trams. No clips no glue they are retained by their own shape. Flush out dirt (salt?) dry and refit after you clean up the bottoms of the doors. About a once in 2yr job.
Good - Fast - Cheap: Pick any two.
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i