Fit like a glove with the BMW adapter they sell separately. This was an upgrade to my bang and olfsun in my 2014 X5 F15. This thing (2× 4ohm) should have come with the $3k+ B&O system. A must have, you won't regret it. Careful on install with all the clips and covers... don't force anything. You will need about 6 inches extra of speaker wire (3 per side). Huge difference, be easy on them while they break in.

I've gone through a pair already which both separated at the tinsel lead and spider. Only feeding the pair 250 Watts set clean. Second pair has lasted longer, sounds great in my e90 stock locations. But now, the dust caps come off. First it was the passenger side, glued it back no problem. But then my driver side dust cap comes off!! Seriously guys, be generous with the glue, there was hardly any under my caps.

It fit into my stock door speaker mounts perfect! Because it mounted into my doors it doesn't have the deep bass like in a box or trunk but it works great!

The install didn't take that long. Quality is great! After install I queued up a few bass hits and it handle the sound excellently. The only issue I had was the way it came through the mail. It arrived in the original box where everyone knew it was a speaker. I would have prefer it boxed up. It still arrived intact.
I am keeping the 5 stars because the product itself is working excellent.

Thank you!

Fitment for the 2010 BMW X5 (E70)...
Time is 1.5 to 2 hours
1. remove seats (unhook battery prior to unplugging ASR) OR unbolt seats and tip them WAY back
2. remove old speakers from housing
3. on the lip plastic lip put a thin foam tape to seal it.(careful not to overlap)
4. place the speaker directly on the foam tape.
5. use a bunch of the foam tape to block the wire port left by the old speaker.
6. place new speaker in.
7. Place foam spacer OVER the speaker edge.
8. Place plastic housing ring that comes with the speaker over that.
9. obtain and using 1" screws, secure assembly together
10. Place back into sub box under seat and secure.
11. follow the +/- guide on the old assembly to hook wires up. I used wire nuts, but you can use the lugs.
12. you will not be able to put the cover back on, so, you can leave them off or just figure something out to cover the holes. I just left mine uncovered. You do whatever you want.
13. Test speakers.
14. obtain a total of 8 washers for the seat. 3mm in thickness, and place these down on the seat track bolt holes. These are for clearance of the seat track and speaker housing.
15. Secure seat.
Done.