first post for me.
I have recently bought a black 2006 E90 330D. The car is in really good nick and has provided the motoring enjoyment you'd expect from a Beemer.
My one concern though is a slight discolouring of the black window frames. The dealer claimed it is just polish residue. I can't wash it off but if I scratch it lightly with my nail it does come off. On first inspection it looks like a bit of rust but thankfully it does not appear to be the case when I look closely.
My question is: has anyone else had a similar experience on an E90? If so, can you suggest a good product to remove it? I'm probably being over-cautious here and should just buy something from Halfords and get it done with. However, some advise would be appreciated nonetheless.
Cheers and thanks for reading,