Peachmonkey,
HIDseller might want to reinforce this input of mine also.....here goes;
The light rays from a 6000K will be slightly poor on wet roads as the light will be mostly reflected thus you will not illuminate the road....however, it will still be brighter and quite a lot safer due you will still see all road signage or markings as compared to the normal halogen light. BUT in your case as you mentioned that you plan to install it in your wira, its only recommended IF your headlight lens are clear and NOT the diffusing/difracting type which have lines as the diffusing lens will be a very GLARING sight to all oncoming traffic.
No doubt, it will appear much brighter to you as the driver but to others it will be quite blinding. Additionally reflector type enclosure will not have a nice cutoff and there will be lots of HOTSPOTS(uneven spread of light).
Best if U use on a projector type enclosure but might still be ok IF used in a reflector type enclosure PROVIDED the lens is non diffusing type.
Best Regards