im not wrong!! i have done the research, and talked to companies!!
i have in my car 6K nice and white with NO BLUE,
when going with higher Ks the light becomes for unstable for distance, but is still REALLY bright, and bluer!!
i have done test myself and proved the theroy myself and it became a fact!
6k goes farther then 10K down the road, BUT 10K is REALLY bright and comes up short for distance