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 Headlight 2014 – 2016 H7
High Beam Headlight 2014 – 2016 H15
Back Up Light 2014 – 2016 1156
Brake 2014 – 2016 1156
Daytime Running Light 2014 – 2016 H15
Dome Light 2014 – 2016 194
Front Turn Signal 2014 – 2016 PY21W
Parking Light 2014 – 2016 H6W
Rear Turn Signal 2014 – 2016 1156
Tail Light 2014 – 2016 1156
Courtesy 2014 – 2016 12961
Map Light 2014 – 2016 12961
Trunk 2014 – 2016 DE3423
Back Up Light 2014 – 2016 1156
Brake 2014 – 2016 1156
Dome Light 2014 – 2016 194
Front Turn Signal 2014 – 2016 PY21W
Rear Turn Signal 2014 – 2016 1156
Tail Light 2014 – 2016 P21W
Courtesy 2014 – 2016 12961
Map Light 2014 – 2016 12961
Trunk 2014 – 2016 12844
High Beam and Low Beam Headlight 2014 – 2016 D1S
Back Up Light 2014 – 2016 1156
Brake 2014 – 2016 1156
Dome Light 2014 – 2016 194
Front Turn Signal 2014 – 2016 PY21W
Rear Turn Signal 2014 – 2016 1156
Tail Light 2014 – 2016 P21W
Courtesy 2014 – 2016 12961
Map Light 2014 – 2016 12961
Trunk 2014 – 2016 12844
Low Beam Headlight 2015 – 2016 H7
High Beam Headlight 2015 – 2016 H15
Back Up Light 2015 – 2016 1156
Brake 2015 – 2016 1156
Daytime Running Light 2015 – 2016 H15
Dome Light 2015 – 2016 194
Front Turn Signal 2015 – 2016 PY21W
Parking Light 2015 – 2016 H6W
Rear Turn Signal 2015 – 2016 1156
Tail Light 2015 – 2016 1156
Courtesy 2015 – 2016 12961
Map Light 2015 – 2016 12961
Trunk 2015 – 2016 DE3423
Back Up Light 2015 – 2016 1156
Brake 2015 – 2016 1156
Dome Light 2015 – 2016 194
Front Turn Signal 2015 – 2016 PY21W
Rear Turn Signal 2015 – 2016 1156
Tail Light 2015 – 2016 P21W
Courtesy 2015 – 2016 12961
Map Light 2015 – 2016 12961
Trunk 2015 – 2016 12844
High Beam and Low Beam Headlight 2015 – 2016 D1S
Back Up Light 2015 – 2016 1156
Brake 2015 – 2016 1156
Dome Light 2015 – 2016 194
Front Turn Signal 2015 – 2016 PY21W
Rear Turn Signal 2015 – 2016 1156
Tail Light 2015 – 2016 P21W
Courtesy 2015 – 2016 12961
Map Light 2015 – 2016 12961
Trunk 2015 – 2016 12844