2014 BMW 335i Speaker Sizes

The 2014 BMW 335i speaker size chart provides factory speaker specifications and locations for the audio system. Information includes replacement speaker sizes for center dash, front door panel, rear deck lid, rear door panel, and below seats positions. Aftermarket upgrade specifications detail the factory system configurations available in the 335i model.

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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	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

2014 BMW 335i 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

2014 BMW 335i 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 2014 BMW 335i factory audio system incorporates a distributed speaker configuration with dedicated tweeters, midrange drivers, and a subwoofer, suggesting a multi-way component setup rather than traditional full-range coaxial speakers.
Tweeters at 1 inch are positioned across four locations including the center dash, front door panels, rear deck lid, and rear door panels, which may indicate an emphasis on high-frequency dispersion throughout the cabin.
Midrange drivers at 4 inches occupy the same four locations as the tweeters, potentially working in tandem with them to create a component speaker system with separate frequency-specific drivers.
The 8-inch subwoofer positioned below the seats could provide low-frequency reinforcement without consuming cargo space, though this placement might limit output compared to trunk-mounted installations.
Replacing the factory tweeters and midrange speakers with aftermarket component sets of matching sizes could maintain the original acoustic design while potentially improving clarity and power handling.
The presence of both Single DIN and Double DIN radio compatibility suggests flexibility for head unit upgrades, which might be necessary to fully utilize higher-quality aftermarket speakers.
Given the component speaker layout, upgrading might involve replacing multiple drivers per location, which could require component systems with external crossovers to properly manage frequency distribution.
The under-seat subwoofer location at 8 inches represents a relatively compact low-frequency solution that may benefit from replacement with a higher-excursion driver designed specifically for limited enclosure volumes.