From an old BMW posting:
Motorcycle Headlight Aiming
Getting a correctly aimed headlight is straightforward. You need to make
a couple of measurements and then aim the light at a flat wall, as follows:
With the bike on its wheels and you astride, have a helper measure the
distance from the floor to the center of the headlight lens.
Pick a flat wall where you can locate the bike so the headlight is 17 feet
from the wall. Place a horizontal mark on the wall two (2) inches lower
than the height of the center of the headlight.
The headlight beam (on low beam) should be relatively flat on the top, and
may rise rather sharply at the right edge. Adjust the headlight vertically
so that the flat top of the beam is just up to that line (marked two inches
down at 17 feet).
Horizontal adjustment should center the beam ahead of the line of the bike.
Paul is the Technical Editor of the BMW Owners News, the monthly magazine
of the BMW Motorcycle Owners of America. Paul can be contacted at