Lol welcome to the 1 series, they squeak and rattle big time. On the passenger side i get a light rattle from the glove box and a pillar under load or when driving on a rough surface. Im not sure about a metallic sound, but if youre just talking rattles..."it is what it is". The trim that runs along the dash has also been known to have rattles underneath it as well.
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E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII
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