I have them in my 2005 Z4 Roadster. Agree tweeters are a massive upgrade. Mids are cleaner than stock in the 10 speaker dsp system. I also put JL Audio 6" subs in place for stock subs and they helped a bit. For what I have into it I would have been better off to rip it all out and put in a new head unit, amp and speakers. Then again it's all a moot point at 80 mph with the top down.
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