Grand Prix 250
Main Motorcycle: '07 Sprint ST ABS
Join Date: Sep 2012
I can weigh in on 6000k vs. 5000k:
The 'k value' refers to the color output of the bulb, not the wattage or brightness. I initially installed 35w 6000k in my low beams and they were too blue for my liking. The bluer 6000k puts out lighting that's a 'bling' aftermarket appearance IMO. 6000k is no improvement in brightness or visibility over same wattage/manufacturer 5000k bulbs - which is a bright white with only a hint of blue.
So 6000k vs. 5000k is a matter of preference.
You'll find that 35w or 50w are the standard bulb/ballast choices. Here I can also weigh in. I have 35w 5000k in my e30 BMW & 50w 5000k in my Porsche. There is a noticeable difference in the brightness between the two. 35w HID is a noticeable improvement over standard halogens. 50w is a dramatic improvement. I found the 35w to be adequate in my ST application.
A few other things to consider when choosing between 35w and 50w:
The cost of 50w kits vs. 35w can be 2x more.
The availability is less for the 50w. I don't know why...demand? Reliability of the bulbs/ballasts?
The ballasts are larger for the 50w, and a clean, stealth install in your fairing will be much more of a challenge with 50w ballasts - at least those at a reasonable price point in 2013.
Using a 50w kit in your lows, you run a much higher risk of blinding oncoming cars if the lighting isn't adjusted properly. Even with properly adjusted lows, if you approach an oncoming car in a lean, you will likely offend the oncoming car with blinding light as the 50w HID really cranks.
Re: HID as the high beam replacement:
See Bruce C's posts in #18 and #20. I recommend against if your night riding is primarily highway or in a suburban/heavily traveled area. If your high beam use is sporadic (short intervals between oncoming cars), the time that it takes for the ballast to fire and output to be at 100% is too long to get any benefit out of an HID high beam.
..again, my opinion.
I went with a non-HID. high end/high output upgrade bulb for my high beam.
'07 Sprint ST ABS
Last edited by JPTL; 02-11-2013 at 02:44 PM.