2018 BMW M240i Speaker Sizes
The 2018 BMW M240i factory audio system features specific mounting locations that accommodate different speaker units. Center dash, front door panel, rear deck lid, and rear side panel locations accept 1 inch speakers alongside a 1 inch speaker size, while below seats locations support 8 inch units. Available replacement and upgrade speaker types 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 | 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 |
|
2018 BMW M240i 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: 2Additional Notes
- The 2018 BMW M240i factory audio system incorporates a three-way speaker configuration with dedicated tweeters, midrange drivers, and subwoofer components distributed across multiple locations throughout the cabin.
- One-inch tweeters are positioned in four distinct locations: the center dash, front door panels, rear deck lid, and rear side panels, suggesting a design approach focused on high-frequency dispersion throughout the listening environment.
- Four-inch midrange speakers occupy the same four locations as the tweeters, indicating a likely component speaker arrangement where each position houses both a tweeter and a separate midrange driver rather than coaxial units.
- The under-seat location houses an eight-inch subwoofer, which likely handles bass frequencies while remaining relatively concealed within the vehicle architecture.
- Replacement priorities might favor the midrange drivers and tweeters in the front door panels and center dash positions first, as these locations typically contribute most directly to the primary listening area.
- The separation of tweeter and midrange elements into discrete components rather than coaxial designs potentially allows for more precise frequency distribution and crossover management during aftermarket upgrades.
- Aftermarket component speaker sets with one-inch tweeters and four-inch midrange drivers would maintain the factory mounting configuration, though installers would need to address crossover integration depending on whether the factory system uses passive or active crossover networks.
- The eight-inch subwoofer location below the seats may present installation challenges for aftermarket replacements due to potential depth restrictions and mounting provisions specific to the factory unit.