BMW M2 high beam headlight bulbs use D1S and H15 sizes, while low beam headlight bulbs use D1S and H7 sizes. The replacement chart covers 2016 through 2018 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The D1S bulb type is the most prevalent across these specifications, appearing in both high beam and low beam positions for the 2016-2018 BMW M2 in its standard headlamp configuration.
The D1S is a high-intensity discharge (HID) bulb that operates using xenon gas and an integrated igniter, distinguishing it from bulb types that require a separate ballast and igniter unit.
The 2018 BMW M2 with Halogen Capsule Headlamps uses the H15 bulb for the high beam position rather than the D1S, indicating a separate headlamp system with different electrical and optical requirements.
The H15 is a dual-filament halogen bulb originally developed for automotive use, with one filament serving the daytime running light function and the other serving the high beam function.
The 2018 BMW M2 with Halogen Capsule Headlamps uses the H7 bulb for the low beam position, which is a single-filament halogen bulb operating at 55 watts in a PX26d base configuration.
The D1S and H7 are not interchangeable, as they differ in operating voltage, base type, and ignition requirements, making the halogen and HID configurations mutually exclusive fitments.
The H15 and D1S are similarly incompatible with one another, as the H15 relies on a standard 12-volt halogen circuit while the D1S requires a high-voltage discharge circuit to initiate the arc.
The presence of two distinct bulb configurations for the 2018 model year reflects a factory headlamp option, where the correct replacement bulb depends on which headlamp system the specific vehicle was built with.