1987 BMW 535i Speaker Sizes
The 1987 BMW 535i factory audio system features front kick panel and rear deck lid locations that accommodate 4x6 inch speakers. Full-range drivers serve as compatible speaker types for a sound system replacement and upgrade project.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Kick Panel | 4x6 | Full-Range |
|
| Rear Deck Lid | 4x6 | Full-Range |
|
1987 BMW 535i Speaker Replacement Summary
2
total positions
1
easy to replace
0
high priority
0
professional only
Replacement difficulty:
Low: 1 Medium: 1 High: 0Replacement priority:
High: 0 Medium: 2 Low: 01987 BMW 535i 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 1987 BMW 535i uses matching 4x6 inch openings in both front kick panels and rear deck lid positions, which creates potential for balanced sound staging when replacing all four locations with full-range speakers of similar specifications.
- Full-range speakers for these locations typically combine woofer and tweeter elements in a single unit, eliminating the need for separate crossovers or component installations in the restricted kick panel and deck lid spaces.
- The 4x6 inch format presents certain acoustic limitations compared to round drivers, as the oval shape may introduce minor resonance characteristics depending on speaker basket design and mounting depth clearance.
- Upgrading the kick panel speakers could provide more immediate sound improvement for front seat occupants, as these positions generally offer better stereo imaging than rear deck installations.
- The rear deck lid mounting position may benefit from speakers with enhanced upper frequency response to compensate for the increased distance and angle relative to front passengers.
- Aftermarket 4x6 inch full-range options vary considerably in sensitivity ratings, with higher sensitivity models potentially providing better output when paired with the factory single DIN head unit or amplification.
- The single DIN radio opening allows for straightforward replacement with aftermarket head units that could deliver increased power output to drive upgraded speakers more effectively.