For the 2015 BMW M4, headlight fitment depends on the installed headlight type. The low beam is either D1S or LED, while the high beam is also listed as either D1S or LED. Confirm whether the vehicle has HID or LED headlights before ordering replacement bulbs.
- Fog lights, daytime running lights, parking lights, cornering lights, and front and rear side markers use LED fitment.
- Front turn signals vary by headlight configuration: 5200 with HID headlights or LED with LED headlights.
- The rear turn signal uses a 7506 bulb, the reverse light uses 921, and the brake light uses 64136.
- The center stop light and tail lights are LED.
- Dome light fitment is listed as 2825 or 98, while the glove box, map, trunk, vanity, and other interior lights use LED fitment.