Headlight adjustment on the wall is the correct way to do it! 25' is the closest distance! 2-3" down from the center of the bulb or projector lense at 25'. Not sure about your state but every inspection station in Massachusetts has a headlight alignment board. Depending on how high the vehicle is determines whether its 2 or 3" down. That will give you proper coverage on the road.
This isnt stuff im making up and guidelines set by DOT.
Here is where I think you are focusing too much on the "rules" or standards or the way things are supposed to be.
That's just not always the case in application.
I have known the book method of aiming headlights since I was 12. Got it right or of a thick blue Motor Repair Manual. That's been a while and the DOT procedure hasn't changed BUT
I have certainly tweaked a few cars after the wall adjustment on the street and usually it's 2-3 tweaks until I'm happy with what I see shining down the road.
I'm just saying that several of those terrible cheap leds could be adjusted to not be so bad. But then compare it to one of the best brands you have mentioned and I'm sure most people would decide to spend more to get them.
Correct isn't always best.
Also people should adjust light more often - most never do.
They get bumped and changed and any lift kits or tire size changes or even just Springs settling over the years throws off a perfect adjustment.




