Not a problem as such but I am curious for info. By and large I do little night time riding outside of well lit areas. But as Icicle Ride time approaches, one begins to think about the adequacy (or on my bikes the lack thereof) of their headlights. Usually before the Icicle Ride I strap on a couple of cheap set extra lights to my crash bars, which tends to improve spread greatly, especialy in corners, but does not do much for distance. In the Icicle Ride (Vic Rides) thread a number of solutions have been suggested such as HID's, higher wattage bulbs and +40's and their ilk. So my question is for a given say, H4 bulb, what is the difference between a standard bulb and a +40 bulb. Are they a higher wattage and just don't explicitly say this, or do they burn hotter? I have heard they have a significantly shorter life expectancy - is this true? Do they work and ar they worth it?