When I had my 320d i used
www.e46fanatics.com/It is american so slightly different but it does have a UK sub-section. Was refreshing to see totally different styles etc over there and the Yanks used to go daft for the specs/trims/parts we had over here.

assuming you havew an e46. Never owned an e90 YET so haven't ventured onto any their forums... (goes to have a look)