I would be worried about issues with electronics and rust under the carpet due to water damage.
There are lots of other 6ers out there. If you keep it I would ask for a completely new top - about $900 for the fabric.
Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater