2013 BMW 335i Speaker Sizes
Replacement speaker specifications for the 2013 BMW 335i factory audio system are listed by installation locations. The speaker size chart includes data for factory positions in rear side panel, center dash, front door panel, rear deck lid, rear door panel, and below seats. Information assists in identifying compatible aftermarket speakers for upgrade or replacement purposes.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Below Seats | 8 | Subwoofer |
|
| Center Dash | 1 | Tweeter |
|
| Center Dash | 4 | Midrange |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 4 | Midrange |
|
| Rear Deck Lid | 1 | Tweeter |
|
| Rear Deck Lid | 4 | Midrange |
|
| Rear Door Panel | 1 | Tweeter |
|
| Rear Door Panel | 4 | Midrange |
|
| Rear Side Panel | 1 | Tweeter |
|
| Rear Side Panel | 0.75 | Tweeter |
|
| Rear Side Panel | 4 | Midrange |
|
2013 BMW 335i Speaker Replacement Summary
12
total positions
6
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 6 Medium: 6 High: 0Replacement priority:
High: 2 Medium: 7 Low: 32013 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 2013 BMW 335i audio system relies on a component speaker configuration where tweeters and midrange drivers work together across multiple locations rather than using traditional full-range coaxial speakers.
- Tweeter replacement might take priority in the front locations since the 1 inch tweeters in the center dash and front door panel handle the critical high-frequency response that affects vocal clarity and soundstage imaging.
- The 4 inch midrange speakers distributed throughout the center dash, front doors, rear deck lid, rear doors, and rear side panels handle the crucial midband frequencies where most musical content and vocal information resides.
- Component speaker systems like this configuration typically offer better sound staging and frequency separation compared to coaxial designs because dedicated drivers handle specific frequency ranges without interference.
- The rear side panel location contains both a 0.75 inch tweeter and a 1 inch tweeter along with a 4 inch midrange, suggesting this position may serve a specific role in the surround sound field or spatial audio presentation.
- Aftermarket component speakers would need to match the factory sizes precisely, with particular attention to the tweeter mounting depth and the 4 inch midrange fitment in the various panel locations throughout the 2013 BMW 335i cabin.
- The 8 inch subwoofer positioned below the seats provides low-frequency extension in a location that balances bass output with cabin space constraints.
- Sound improvement from speaker replacement would likely be most noticeable when upgrading the midrange drivers first, since they reproduce the widest range of audible content and often degrade faster than tweeters in factory installations.
- The single DIN and double DIN radio compatibility indicates flexibility for head unit upgrades, which could provide increased power output to drive aftermarket speakers more effectively.
- Tweeter sensitivity ratings and power handling become important considerations when selecting replacements, as the factory amplification may have been calibrated for the original speaker impedance and efficiency characteristics.