[justswim208]

Not up to speed with technical lingo, but I've been having what sounds like extra vibration from something in the trunk area when I have my bass pretty high up and music at a higher volume. It doesn't look like the rear speakers are visible and I'm wondering if I speakers them selves are blown (pretty unlikely) or they need to be secured?

Also, anyone know how to reach the speakers? Its a 2015 F30. TIA!

[Billfitz]

What system? How high the bass is shouldn't affect the rear speakers, as the bass comes from the woofers under the seats.

[justswim208]

It's just the stock for base model. Not sure if it's Hi-Fi. I'm wondering if its the trunk/rear speaker trim that's vibrating.

[IAmATeaf]

Can’t you turn it up and then get in the back to see/check?

[Billfitz]

Originally Posted by justswim208

It's just the stock for base model. Not sure if it's Hi-Fi.

It makes a difference. AFAIK what's technically the Base model isn't sold in US cars. A VIN search should tell you what you have.

[BEM-S4]

Originally Posted by Billfitz

It makes a difference. AFAIK what's technically the Base model isn't sold in US cars. A VIN search should tell you what you have.

That's correct base is not sold here, which can be confusing. For 3s there is base (ROW) then HiFi and HK. Since HiFi is a no cost option for US people often mistakenly refer to that as base. It is, but it isn't.