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dirtydog · 06-08-13, 10:15 PM

I think what you'll find is the 100w bulbs aren't E marked which is what makes them illegal, I don't think there is a maximum wattage but you shouldn't dazzle or cause discomfort to other road users or something like that.

As for failing an MOT with an 80w bulb I think it would probably be ok as long as its adjusted properly

06-08-13, 10:15 PM	#2
dirtydog Knob faced knobster Mega Poster Join Date: Jan 2005 Location: Haslemere Posts: 5,422	Re: Headlight bulb law I think what you'll find is the 100w bulbs aren't E marked which is what makes them illegal, I don't think there is a maximum wattage but you shouldn't dazzle or cause discomfort to other road users or something like that. As for failing an MOT with an 80w bulb I think it would probably be ok as long as its adjusted properly __________________ 2011 Speed Triple 1050 Last edited by dirtydog; 06-08-13 at 10:16 PM.