2011 BMW 335is Speaker Sizes

The 2011 BMW 335is speaker size chart provides factory specifications for audio system components. Information covers replacement and aftermarket upgrade options for speakers in multiple locations throughout the vehicle, including front door panels, rear side panels, center dash, rear deck lid, and below seats.

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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.