Looking at new upgrade Halogen Bulbs I see some such as Sylvania Ultra bulbs have a color temp of 4100k ,
But the Philips X-treame bulbs shows a color temp of 3400k ,
SO are the Sylvania with the higher bulb color temp a brighter bulb ??
Thanks for your input.

 

Its great to post a question that stumps everyone. Even Joe..
Hint/Tip...no reply...no one knows answer...
But I went with the Sylvania Ultra White Bright halogen bulbs.
A PIA to rip the inner fender down to install(Fords better idea). But after installing one side I turned on the lights to make sure they worked before replacing the fenderwell. I was pulled up to the white garage door. I could see the factory light on the door was yellow tint....the new Sylvania side...bright white light.
After driving at night. A lot brighter. I like them.

 

K stands for Kelvin, which is color, not brightness. Brightness is measure in Lumens. Huge debate on which Kelvin color is better for overall driving, more yellowish or more blueish/white. To me it all depends on the driver and their preference.

Those Sylvania's have mixed reviews on longevity. I personally run Philips Crystal Vision Ultras ($25 a pair on ebay) with great results. So good they are in every car I or my kids own.

 

Get the Philips bulbs and don't waste your time with blue tinted bulbs unless you want to replace them constantly.

 

??? The Philips Crystal Vision Ultra are tinted blue and several sets I have ran for over 2 years without ever having one burn out.

 

I'm talking about the Philips xtreme bulbs which are not tinted and are far superior to any blue tinted bulb.

The reason those blue bulbs are "brighter" is because they're overdriven which means they will wear out and get dim a lot faster than a normal bulb, and then you're stuck with a worn out blue bulb that's even dimmer than a non tinted bulb.
Ive compared a brand new silverstar (blue tinted) bulb next to a 12 month old silverstar bulb, and the 12 month old one is substantially dimmer than the new one. You won't notice this unless you do a side by side comparison like I did.
Non tinted bulbs are better because they put out more lumens despite having a lower color temperature. And when they wear out, they don't get exponentially dimmer because they don't have a blue tint working against them. As the bulb wears out over time, that blue tint becomes more and more counterproductive.

If you really want that pure white look without sacrificing performance, you're not going to get it with halogens. You need HIDs/LEDs.

Or you can replace your blue tinted bulbs every 6-12 months to maintain max brightness

 

Yeah, okay

 

I know this because I've had all of those bulbs. I've owned the crystal visions, silverstars, PIAA xtremewhites, and then I got the xtreme power bulbs after I learned about how the blue bulbs work.

Then I got hid's and never looked back lol

 

Well did you get projectors or a retrofit with those HID's?

 

Yes sir