2015 BMW 228i Speaker Sizes
The 2015 BMW 228i factory audio system contains specific mounting locations designed to accept aftermarket hardware. Center dash, front door panel, rear deck lid, and rear side panel locations accommodate 4 inch speakers and 1 inch units, while below seats locations accept an 8 inch speaker size. Compatible speaker types for replacement and upgrade installations include tweeters, midrange units, and subwoofers.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| 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 Side Panel | 1 | Tweeter |
|
| Rear Side Panel | 4 | Midrange |
|
2015 BMW 228i Speaker Replacement Summary
9
total positions
4
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 4 Medium: 5 High: 0Replacement priority:
High: 2 Medium: 5 Low: 22015 BMW 228i Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Double DIN | 7"×4" | 180×100 | Double size for modern multimedia systems with large touchscreens |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 2015 BMW 228i utilizes a three-way speaker configuration with dedicated tweeters, midrange drivers, and a subwoofer across multiple locations throughout the cabin.
- Each speaker location houses both a 1-inch tweeter and a 4-inch midrange driver, suggesting a component-style system rather than full-range coaxial speakers.
- The front soundstage consists of tweeters and midrange speakers positioned in both the center dash and door panels, potentially providing wide stereo imaging.
- Rear audio coverage includes speakers in both the deck lid and side panels, each location containing both tweeter and midrange elements.
- An 8-inch subwoofer located below the seats handles low-frequency reproduction, which may present space constraints for replacement units.
- The midrange drivers at 4 inches are relatively compact, which could limit cone area and excursion compared to larger woofers in traditional component sets.
- Upgrading the tweeters might yield noticeable improvements in high-frequency clarity and detail, given their prominent placement in four separate locations.
- The double DIN radio opening allows for aftermarket head unit installation without requiring additional dash modifications or adapters beyond standard double DIN sizing.
- Replacing the under-seat subwoofer may require attention to mounting depth and enclosure volume, as this location typically offers limited clearance.
- Component speaker upgrades would need to account for separate tweeter and midrange mounting locations rather than single coaxial units at each position.