are you sure its rust? in the second picture it kind of looks like cosmoline
its hard to tell in pictures however, it almost looks like water from other rusted metal dripped on the metal in your bay.
if it is rust, raise hell. under the seats, rust, OK yeah it sucks. but in your engine bay, not acceptable.
135i M Sport Silver/Coral Red, Premium, Cold Weather, DCT.
Will be adding the PPK/Exhaust someday!