Some doors have a large coil spring across the top front of the door that twists to provide lifting support. If yours is this type, be EXTREMELY careful removing it. It is set to very high tension, and requires using a pair of metal rods to unwind. Not hard to do if you have seen it done and know how. Experimenting on your own with removal techniques could be very dangerous.
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2010 E90 335i Xdrive| Titanium Silver Metallic | Black Leather | Premium, Sport, Nav, Cold | Steptronic | matte black grilles | Cyba scoops | pinstripes | Rear Fog Mod | Clear Reflectors | WeissLicht AE |More to come...|