2007 BMW 335i Speaker Sizes
The 2007 BMW 335i factory audio system contains specific speaker locations paired with compatible units, such that front door panel and rear deck lid locations accept 1 inch units, while center dash, front door panel, rear deck lid, rear door panel, and rear side panel locations accommodate 4 inch speakers, and below seats locations accept an 8 inch speaker size. Additionally, rear side panel locations support 0.75 inch speakers. Compatible types for replacement or upgrade installations include tweeters, midranges, 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 | 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 |
|
| Rear Side Panel | 4 | Midrange |
|
| Rear Side Panel | 0.75 | Tweeter |
|
| Rear Side Panel | 1 | Tweeter |
|
2007 BMW 335i Speaker Replacement Summary
10
total positions
5
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 5 Medium: 5 High: 0Replacement priority:
High: 2 Medium: 5 Low: 32007 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 2007 BMW 335i features a multi-speaker audio configuration with dedicated tweeters, midrange drivers, and subwoofers distributed throughout the cabin, suggesting a factory-designed sound staging approach that separates frequency ranges across different locations.
- Tweeter replacements would involve working with three different sizes: 0.75-inch units in one rear side panel location, and 1-inch tweeters across the front door panels, rear deck lid, and another rear side panel position, indicating size variation even within the same speaker type.
- The midrange speaker network spans five distinct mounting locations at a uniform 4-inch size, including the center dash, front door panels, rear deck lid, rear door panel, and rear side panel, which might allow for consistent component selection when upgrading these drivers.
- An 8-inch subwoofer positioned below the seats handles low-frequency reproduction, a placement that could provide bass output while maintaining cargo space and passenger room in the 2007 BMW 335i.
- The head unit opening accepts both single DIN and double DIN radios, offering flexibility for aftermarket stereo installations ranging from compact units to larger touchscreen interfaces.
- Component speaker systems with separate tweeters and midrange drivers could integrate well given the existing architecture, as the factory configuration already separates these frequency-handling elements into dedicated locations.
- Sound staging potentially benefits from the tweeter placement across front doors, rear deck, and side panels, as this distribution might create a wider soundfield compared to configurations with fewer high-frequency drivers.
- Upgrading the under-seat subwoofer would require attention to the 8-inch size specification and the spatial constraints of the below-seat mounting location, which might limit excursion depth or enclosure volume for replacement units.