If anyone is looking for a NEW set of 318ti trailing arms (or just one), a foreign car salvage/repair yard in my area supposedly has a BRAND NEW set in stock.
33-32-1-091-151 (Left) $268.40
33-32-1-091-152 (Right) $268.40
These are $735
EACH at PelicanParts or a dealer.
You could possibly
save $933!! PM me for details. I am NOT affiliated with this place at all, but I just stumbled across them and thought it might help a fellow 318ti.org member!
They also have a brand new rear axle carrier (rear crossmember). See this thread:
http://www.318ti.org/forum/showthread.php?t=10473