I was never a fan of the headlight mod either, in fact my 99 Fazer had it done when I brought it although he made a complete mess of it and never worked so I stripped all the wiring out he had done and went back to the original setup although did replace the candles they had in there with Osram Nightbreaker Plus bulbs which made a huge different.
Use the same bulbs on my 07 S2 now, although the original Philips were bright but the Osrams on a dark country road on full beam you can see so far ahead and both sides of the road are lit up nicely.
I'm sure I read on here somewhere or another site, maybe even a friend that they had a bike fail an MOT because of a headlight mod but that was maybe 2 years ago.
If you think about it the high beam is set at a certain angle which is checked by the beam setter, if that is correct then having a low beam on with a mod means the headlight is at a different angle to the single sided low beam so they are both set differently on low beam and only correctly set up when high beam is used so could possibly dazzle other users especially at night.
Use the same bulbs on my 07 S2 now, although the original Philips were bright but the Osrams on a dark country road on full beam you can see so far ahead and both sides of the road are lit up nicely.
I'm sure I read on here somewhere or another site, maybe even a friend that they had a bike fail an MOT because of a headlight mod but that was maybe 2 years ago.
If you think about it the high beam is set at a certain angle which is checked by the beam setter, if that is correct then having a low beam on with a mod means the headlight is at a different angle to the single sided low beam so they are both set differently on low beam and only correctly set up when high beam is used so could possibly dazzle other users especially at night.