2011 BMW 550i Speaker Sizes

The factory audio system for the 2011 BMW 550i features locations where center dash, front door panel, rear deck lid, and rear door panel accommodate 4 inch speakers, while center dash, front door panel, rear deck lid, and rear door panel also accept a 1 inch speaker size, and below seats support 8 inch units. Compatible speaker types for replacement or upgrade include tweeter, midrange, and subwoofer.

Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.

Speaker Details by Location
Location Size Type Notes
Below Seats 8 Subwoofer
  • Very limited height clearance
  • Medium replacement priority
  • Replacement difficulty: medium
Center Dash 1 Tweeter
  • Requires dashboard disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Center Dash 4 Midrange
  • Requires dashboard disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 1 Tweeter
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Front Door Panel 4 Midrange
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Deck Lid 1 Tweeter
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Deck Lid 4 Midrange
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Door Panel 1 Tweeter
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low
Rear Door Panel 4 Midrange
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

2011 BMW 550i Speaker Replacement Summary

9 total positions
6 easy to replace
2 high priority
0 professional only

Replacement difficulty:

Low: 6 Medium: 3 High: 0

Replacement priority:

High: 2 Medium: 7 Low: 0

2011 BMW 550i Radio Slot Size (DIN)

DIN Type Size (inch) Size (mm) Notes
Single DIN 7"×2" 180×50 Standard size for basic car radios with small display or no display
  • Always measure the slot before purchasing a new radio
  • Check slot depth - it may vary

Additional Notes

  • The 2011 BMW 550i utilizes a multi-way speaker configuration with dedicated tweeters, midrange drivers, and subwoofers distributed across multiple locations throughout the cabin.
  • All tweeter positions accept 1 inch units, positioned in the center dash, front door panels, rear deck lid, and rear door panels to provide high-frequency sound dispersion.
  • Midrange drivers are uniformly sized at 4 inches across all locations, matching the same positions as the tweeters to handle mid-frequency reproduction.
  • The system incorporates an 8 inch subwoofer positioned below the seats for low-frequency bass response.
  • This configuration suggests a factory audio system designed with frequency-specific drivers rather than full-range coaxial speakers in each location.
  • Replacement options would typically require component speakers or individual drivers matching the specific size and type for each position.
  • The separate tweeter and midrange arrangement may provide improved sound staging compared to single full-range speakers, as each driver handles a dedicated frequency range.
  • Upgrading the 4 inch midrange drivers could potentially enhance vocal clarity and instrumental detail in the mid-frequency spectrum.
  • The under-seat subwoofer placement might limit options for larger aftermarket subwoofer installations without custom mounting solutions.
  • The single DIN radio opening provides standard aftermarket head unit compatibility for potential audio source upgrades.