[christofoo]

As the driver of an irresponsible mod one may not necessarily notice the low beam is not in fact low. If driven primarily in urban settings it may seem to not matter much (streetlights de-emphasize glare). The purpose of the low beam is most crucial on high speed rural highways at night.

On my cars the halogen bulb has two filaments. The low-beam filament sits behind a reflector, part of the bulb, that provides the cutoff, a feature IIRC was irresponsibly omitted by the HID's I pulled up as 'compatible'. EDIT: er, maybe I'm thinking of a 'compatible' LED.

Strongly suggest A-B pictures of your low-beam field on the garage door, arguably also from oncoming POV, if you think you're smarter than the regs and the optical engineers, which is not always totally impossible. But it only takes a certain amount of contamination above the cutoff to make you annoyingly, potentially dangerously, wrong.