for those who wondered what it meant and to understand it. I'd use nothing further on this scale for a low beam headlight bulb than the 5000-5500k range you go any higher than that and you'll lose lighting at night/fog/rain
I run 8500k for the high beams (just for show) when choosing aftermarket bulbs always check for the kelvin scale, if they do not display one or state what it is, I wouldn't bother with it unless it'* just standard bulbs; This will help you determine what kind of use you can expect from the bulb,(coolness factor
or simply for more lighting
) IMO 6000k and up is just for show and really doesn't help you drive more safely in harsh elements.
I used my high beams at night going down a country road and the lighting from the high beam was terrible, it didn't cover much ground and the blue lighting didn't reflect off of hardly anything; Again, this didn't bother me because I never use them; I simply wanted to try them out a night to see if there was a significant loss of light. There was, so I'd never use them for the low beam.
I hope this helps anyone who considers buying aftermarket lighting who really doesn't have a clue on temps/wattage and all the other stuff to consider when shopping around.