I have Rainbow speakers thru BSW and they are definetly way better than stock or DSP systems.... The sound is brighter so an upgraded sub is a definite must.

No idea if the rainbow components for the e39 5 will fit the X5.

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TQ2K


'04 N62 - Alpine White/Truffle
'03 S62 - Petrol Mica/Champagne
'97 S52/4/5 - Alpine White/Dove
'91 M42/4/5 - Brilliantrot/Tan