A very interesting article on LED headlights can be found on www.autobulbsdirect.co.uk.
Click on “News”, then select page 2 and scroll down to select the article “Are LED Headlight bulbs the brightest”.
Some very interesting information which is worth reading by anyone considering LED upgrade.
It also reminded me of my biking days some many years ago when we all started putting our headlights on in the daytime. I then attended a police “ride to arrive course” and the advice was not to do that after all, as it impairs judgement of speed & distance by anyone seeing you coming. That seems to be backed up in the above article. When we see a bright light, we automatically close down the iris and in turn alter our perspective of the approaching vehicle.
So maybe bright ain’t always right??
I am sticking to standard H4.