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Originally Posted by kaymack
Consumer Reports just recently published...
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I read that same article in Consumer Reports today. Interesting article! One thing that they didn't mention, was that in order for these bulbs to get that "bright white" look is to filter out the yellow. And when it does that, it also filters out lots of lumens. That's why they don't light up the road any brighter.
So to combat the reduced light output, some bulb manufacturers will produce brighter burning bulbs. Yes, they throw out more light, but they also burn a lot hotter. The reflectors and lenses in the stock setup is only designed for a certain temp. Lots of reflectors and lenses have melted because of the hotter burning bulbs.
Evidence of this is pretty apparent, when you walk by a car that has the brighter burning bulbs. You can see the lenses are sort of hazed over and cloudy looking.
We've discussed this to great length on a few of my motorcycle forums. Getting brighter burning "white" bulbs are a waste of money. Not only because of the additional cost and severity of failure. But also because they have the potential to destroy other components as well.
Although, aftermarket HIDs, if bought from a reputable company, have been shown to increase visibility. The only problem is, that they're a lot brighter. And because the lenses and reflectors aren't designed for them, oncoming traffic will think you have your high beams on. The lenses and reflectors in HIDs have a sharp cutoff, to keep the beam low and spread out over the road.
You can see the difference in two vehicles with both types of lights. On the standard halogen car, the light smoothly diffuses from light to darkness. On a car equipped with HIDs, the light has a distinctive edge where the light ends and the darkness begins.
Oh, and the HIDs also burn cooler than halogens, all the while producing more light.
So, if you're getting an actual HID kit (not look alike white light bulbs), you've got the advantage of the brighter lights. But without replacing the reflectors, you're not getting the correct focusing of the beam as with factory HIDs.
If you're getting HID lookalikes, you either get reduced light output, or run the risk of melting other parts.
Disclaimer: These opinions are my own. They're based on previous experience with HIDs, testimonials from others that I know in the motorcycling community, research done on lighting manufacturer websites, and knowledge gained from various other of my friends that have already gone down this route. Of course, as with all opinions on HIDs, dino/synth oil, religion, and politics... your mileage may vary.