2011 BMW 335is Speaker Sizes

The 2011 BMW 335is factory audio system features specific mounting locations to accommodate various audio components. Center dash, front door panel, rear deck lid, and rear side panel locations accommodate 4 inch speakers, while front door panel and rear side panel locations accept a 1 inch speaker size. Additionally, rear side panel areas accept 0.75 inch units, and areas below seats accommodate 8 inch units. Available speaker types for replacement and upgrade include tweeter, midrange, and subwoofer units.

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 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 4 Midrange
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Side Panel 1 Tweeter
  • Requires trim removal
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Side Panel 0.75 Tweeter
  • Requires trim removal
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Side Panel 4 Midrange
  • Requires trim removal
  • Medium replacement priority
  • Replacement difficulty: medium

2011 BMW 335is Speaker Replacement Summary

8 total positions
3 easy to replace
2 high priority
0 professional only

Replacement difficulty:

Low: 3 Medium: 5 High: 0

Replacement priority:

High: 2 Medium: 3 Low: 3

2011 BMW 335is Radio Slot Size (DIN)

DIN Type Size (inch) Size (mm) Notes
Single DIN or Double DIN 7"×2" or 7"×4" 180×50 or 180×100 Vehicle supports both radio sizes
  • Always measure the slot before purchasing a new radio
  • Check slot depth - it may vary

Additional Notes

  • The 2011 BMW 335is audio system incorporates a multi-component speaker configuration with tweeters, midrange drivers, and subwoofers distributed across several locations throughout the cabin.
  • Tweeter locations include the front door panel with 1 inch units and rear side panels featuring both 0.75 inch and 1 inch units, suggesting a tiered high-frequency reproduction strategy.
  • Midrange speakers measuring 4 inches are positioned in the center dash, front door panels, rear deck lid, and rear side panels, indicating a focus on vocal and mid-frequency clarity from multiple points.
  • The below-seats location houses 8 inch subwoofers, which typically handle low-frequency output while maintaining a compact footprint in the cabin space.
  • Aftermarket speaker upgrades would likely prioritize the front door panel midrange and tweeter units first, as these contribute most directly to the soundstage perceived by front occupants.
  • The presence of both Single DIN and Double DIN radio compatibility suggests flexibility in head unit replacement options, which may affect overall system integration and amplification capabilities.
  • Component speaker systems with separate tweeters and midrange drivers often provide better sound staging compared to coaxial designs, which aligns with the factory configuration observed in these specifications.
  • Replacing the 8 inch subwoofers below the seats with higher sensitivity or power handling units could enhance bass response without requiring significant modifications to the mounting location.
  • The rear deck lid midrange speakers may face installation challenges during replacement due to accessibility constraints common in this mounting position.