2016 BMW 228i Speaker Sizes

The 2016 BMW 228i factory audio system features center dash, front door panel, rear deck lid, and rear side panel locations that accommodate 4 inch speakers, alongside locations matching the same 4 inch speaker size. Below seats locations accept an 8 inch speaker size, while center dash, front door panel, rear deck lid, and rear side panel locations also support 1 inch units. Tweeter, midrange, and subwoofer types function as standard replacement and upgrade components within the vehicle.

Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.

Speaker Details by Location
Location	Size	Type	Notes
Below Seats	8	Subwoofer	Very limited height clearance Medium replacement priority Replacement difficulty: medium
Center Dash	1	Tweeter	Requires dashboard disassembly Medium replacement priority Replacement difficulty: medium
Center Dash	4	Midrange	Requires dashboard disassembly Medium replacement priority Replacement difficulty: medium
Front Door Panel	1	Tweeter	Standard installation High replacement priority Replacement difficulty: low
Front Door Panel	4	Midrange	Standard installation High replacement priority Replacement difficulty: low
Rear Deck Lid	1	Tweeter	Access through trunk Medium replacement priority Replacement difficulty: low
Rear Deck Lid	4	Midrange	Access through trunk Medium replacement priority Replacement difficulty: low
Rear Side Panel	1	Tweeter	Requires trim removal Medium replacement priority Replacement difficulty: medium
Rear Side Panel	4	Midrange	Requires trim removal Medium replacement priority Replacement difficulty: medium

2016 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: 0

Replacement priority:

High: 2 Medium: 5 Low: 2

2016 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 2016 BMW 228i incorporates a three-way speaker configuration that separates frequency ranges across dedicated driver types rather than using full-range coaxial speakers.
Tweeters handling high frequencies are positioned in four locations throughout the cabin, each requiring 1-inch replacements.
Midrange drivers measuring 4 inches occupy the same general locations as the tweeters, handling vocal and instrumental frequencies in the middle spectrum.
A dedicated 8-inch subwoofer located below the seats handles low-frequency bass reproduction separately from the other drivers.
Upgrading the midrange speakers may provide more noticeable improvements to overall clarity than tweeter replacement alone, given their role in reproducing primary vocal content.
The component-style speaker layout suggests that matching replacement speakers to their specific frequency roles would maintain the intended sound staging and tonal balance.
Aftermarket speaker selection should account for the split between tweeter and midrange responsibilities rather than attempting to install full-range speakers in these dedicated positions.
The subwoofer location beneath the seats may require slim-profile or shallow-mount replacement options depending on available installation depth.
The double DIN radio opening allows for substantial aftermarket head unit options that could provide additional power or processing capabilities for upgraded speakers.