Originally Posted by Singletrack
Why do you think that missing bolts are BMW's responsibility?
I can assure you they were on there and torqued properly when it left the factory.
plus one. such are the risks of improper modification. Legally speaking, they can use it as a basis to void the warranty, because in most cases they will have direct evidence of the correlation between the mod and the manifest damage.
What I don't understand in OP's case, is why the dealer was charging so much more than it really cost to repair the car??
Sounds like you should be hating the dealer and not BMW.