When doing replacement or upgrading on 2014 – 2016 BMW 228i xDrive Adaptive capsule halogen headlamps HID with, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight2014 – 2016 H7
High Beam Headlight2014 – 2016 H15
Back Up Light2014 – 2016 1156
Brake2014 – 2016 1156
Daytime Running Light2014 – 2016 H15
Dome Light2014 – 2016 194
Front Turn Signal2014 – 2016 PY21W
Parking Light2014 – 2016 H6W
Rear Turn Signal2014 – 2016 1156
Tail Light2014 – 2016 1156
Courtesy2014 – 2016 12961
Map Light2014 – 2016 12961
Trunk2014 – 2016 DE3423
Back Up Light2014 – 2016 1156
Brake2014 – 2016 1156
Dome Light2014 – 2016 194
Front Turn Signal2014 – 2016 PY21W
Rear Turn Signal2014 – 2016 1156
Tail Light2014 – 2016 P21W
Courtesy2014 – 2016 12961
Map Light2014 – 2016 12961
Trunk2014 – 2016 12844
High Beam and Low Beam Headlight2014 – 2016 D1S
Back Up Light2014 – 2016 1156
Brake2014 – 2016 1156
Dome Light2014 – 2016 194
Front Turn Signal2014 – 2016 PY21W
Rear Turn Signal2014 – 2016 1156
Tail Light2014 – 2016 P21W
Courtesy2014 – 2016 12961
Map Light2014 – 2016 12961
Trunk2014 – 2016 12844
Low Beam Headlight2015 – 2016 H7
High Beam Headlight2015 – 2016 H15
Back Up Light2015 – 2016 1156
Brake2015 – 2016 1156
Daytime Running Light2015 – 2016 H15
Dome Light2015 – 2016 194
Front Turn Signal2015 – 2016 PY21W
Parking Light2015 – 2016 H6W
Rear Turn Signal2015 – 2016 1156
Tail Light2015 – 2016 1156
Courtesy2015 – 2016 12961
Map Light2015 – 2016 12961
Trunk2015 – 2016 DE3423
Back Up Light2015 – 2016 1156
Brake2015 – 2016 1156
Dome Light2015 – 2016 194
Front Turn Signal2015 – 2016 PY21W
Rear Turn Signal2015 – 2016 1156
Tail Light2015 – 2016 P21W
Courtesy2015 – 2016 12961
Map Light2015 – 2016 12961
Trunk2015 – 2016 12844
High Beam and Low Beam Headlight2015 – 2016 D1S
Back Up Light2015 – 2016 1156
Brake2015 – 2016 1156
Dome Light2015 – 2016 194
Front Turn Signal2015 – 2016 PY21W
Rear Turn Signal2015 – 2016 1156
Tail Light2015 – 2016 P21W
Courtesy2015 – 2016 12961
Map Light2015 – 2016 12961
Trunk2015 – 2016 12844