don't think the BSW kit is available for the E70 yet... website says it won't be till spring 08..

supposed to be a simple and clean speaker swap...

other notable replacements are MB Quart & Polk Audio...

i did the Polks and love the results...


only thing that drives me a bit crazy is the factory placement of the front/dash mounted speaker... (it's just one in the middle)

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2012 X5 50i M-Sport
2014 X3 35i M-Sport