2009 BMW 335i Speaker Sizes
Speaker size chart for the 2009 BMW 335i details factory speaker locations and specifications throughout the vehicle. Information covers speaker positions in the front door panel, rear door panel, center dash, rear deck lid, rear side panel, and below seats. Data assists in identifying replacement speakers and planning aftermarket audio system upgrades based on OEM installation points.
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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 |
|
| Rear Side Panel | 1 | Tweeter |
|
| Rear Side Panel | 0.75 | Tweeter |
|
| Rear Side Panel | 4 | Midrange |
|
2009 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: 32009 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 2009 BMW 335i audio system incorporates a multi-speaker configuration with dedicated tweeters, midrange drivers, and subwoofers distributed across multiple locations throughout the cabin.
- Tweeter replacement represents a potential upgrade path, with four distinct locations featuring units ranging from 0.75 inch to 1 inch in the front door panels, rear deck lid, and rear side panels.
- Midrange speakers constitute the majority of the system, with 4 inch units positioned in five separate locations including the center dash, front door panels, rear deck lid, rear door panels, and rear side panels.
- The rear side panel locations accommodate multiple speaker types, housing both 0.75 inch and 1 inch tweeters along with 4 inch midrange drivers, suggesting a layered approach to sound dispersion in the rear listening area.
- Low-frequency reproduction falls to 8 inch subwoofer units mounted below the seats, a placement choice that may provide bass reinforcement while conserving visible interior space.
- Component speaker systems might offer improved sonic performance for the 2009 BMW 335i when replacing the factory tweeter and midrange combinations, particularly given the separate mounting locations already established in the original design.
- The radio head unit accepts both single DIN and double DIN form factors, potentially allowing for aftermarket receiver installations without extensive dashboard modification.
- Sound staging could be enhanced through selective speaker upgrades, as the front soundstage benefits from dedicated 1 inch tweeters and 4 inch midrange speakers in the door panels, supplemented by a 4 inch center dash midrange unit.
- The rear deck lid configuration mirrors certain front door panel specifications with matching 1 inch tweeter and 4 inch midrange combinations, which may contribute to a balanced front-to-rear sonic character.
- Aftermarket speaker selection would need to account for the specific size constraints, particularly the 0.75 inch tweeter in one rear side panel location, which represents the smallest driver in the entire audio system.