When I was driving home from the dealership I was following my father, who was driving the family mini-van. He said he had a shadow infront of him the whole way because my headlights coming from behind him were brighter than his headlights! I'd say the lights are pleanty bright!

I am not sure about the side coverage because the only two-lane driving I have really done has been during the day/early evening. Hope that helps a little.