I love my M3 SR+, but the stock audio system is pretty underwhelming (lack of bass is most noticeable). I'm not even sure that turning on the "Immersive Sound" does anything since the tweeters are not wired up. I'd be willing to pay $2,500 just to get the audio upgraded from Tesla. I'm worried about messing with the system myself or letting a shop do it because Teslas are not typical cars. I'm thinking it may be a possibility since they removed HomeLink but allow you to purchase as a separate upgrade, but I don't have my hopes very high. What are everyone's thoughts?