2008 BMW 550i Speaker Sizes
The 2008 BMW 550i speaker size chart lists factory audio system locations and replacement specifications. Information covers front door panel, rear deck lid, center dash, rear door panel, and below seats positions. Aftermarket upgrade specifications are provided for each factory speaker location within the audio system.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Below Seats | 8 | Subwoofer |
|
| 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 | 4 | Midrange |
|
2008 BMW 550i Speaker Replacement Summary
7
total positions
5
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 5 Medium: 2 High: 0Replacement priority:
High: 2 Medium: 5 Low: 02008 BMW 550i Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 2008 BMW 550i features a multi-speaker configuration distributed across several locations, with tweeters positioned in the front door panels and rear deck lid to handle high-frequency reproduction.
- Midrange speakers of 4 inches are installed in four distinct locations throughout the cabin, including the center dash, front door panels, rear deck lid, and rear door panels, suggesting a focus on mid-frequency sound distribution.
- The factory audio system incorporates an 8-inch subwoofer mounted below the seats, which may provide bass enhancement without consuming significant trunk space.
- Replacing the 1-inch tweeters could potentially improve clarity in the upper frequency range, particularly if the factory components have deteriorated over time or lack the desired sonic characteristics.
- The multiple 4-inch midrange locations in the 2008 BMW 550i suggest that upgrading these speakers might have a substantial effect on overall sound quality, given their prevalence in the audio system.
- The under-seat subwoofer location presents certain constraints for replacement options, as physical clearance and mounting provisions may limit the selection of aftermarket alternatives.
- Component speaker systems with separate tweeters and midrange drivers could work with the existing speaker locations, though the 4-inch midrange size is somewhat smaller than typical component sets designed for door installations.
- The single DIN radio opening provides standard sizing for head unit replacement, which may be relevant when considering system upgrades that involve both speakers and source components.