2015 BMW 320i Speaker Sizes
The 2015 BMW 320i speaker size chart provides factory specifications for audio system components across multiple locations. Information covers speakers in the center dash, front door panel, rear deck lid, rear door panel, and below seats. Details support replacement or aftermarket upgrade planning by documenting OEM configurations throughout the vehicle's audio system.
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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 |
|
2015 BMW 320i Speaker Replacement Summary
9
total positions
6
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 6 Medium: 3 High: 0Replacement priority:
High: 2 Medium: 7 Low: 02015 BMW 320i 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 2015 BMW 320i utilizes a multi-speaker configuration with dedicated tweeters and midrange drivers across multiple cabin locations, suggesting a factory audio system designed with frequency separation in mind.
- Tweeters measuring 1 inch are positioned in the center dash, front door panels, rear deck lid, and rear door panels, potentially providing high-frequency coverage throughout the listening environment.
- Midrange speakers at 4 inches occupy the same locations as the tweeters, which indicates a component-style setup rather than full-range coaxial speakers in these positions.
- An 8-inch subwoofer located below the seats handles low-frequency reproduction, though this placement may limit bass output compared to trunk-mounted configurations.
- Upgrading the midrange speakers could be considered a priority for the 2015 BMW 320i, as these drivers typically handle the majority of vocal and instrumental content in music reproduction.
- The tweeter locations in both front and rear door panels suggest that aftermarket component speaker sets with separate tweeters would integrate directly into the existing mounting points.
- Aftermarket speakers matching the 4-inch and 1-inch specifications would likely maintain the factory mounting arrangements without requiring modifications to door panels or dash areas.
- The radio accepts both Single DIN and Double DIN head units, offering flexibility for audio source upgrades if the factory unit requires replacement.
- Sound quality improvements might be achieved by replacing the 4-inch midrange drivers with higher-sensitivity units, particularly if the factory speakers show signs of deterioration.
- The under-seat subwoofer location may require specific aftermarket units designed for shallow mounting depths if replacement becomes necessary.