whats so good about sylvania silver starS? Options

[trdproven]

I use Nokya bulbs and they are bright as hell.

[Galcobar]

Sylvania Silverstars are a variation on Osram (Sylvania's European parent company) Silverstars.

An Osram Silverstar is an ultra-high efficiency bulb, designed to output 40-50% more usable light than a standard halogen bulb of the same type. The technology to enhance these bulbs is largely based on H7 bulb designs, which is why there are no ultra-high efficiency H7. They also include a slightly different gas mixture inside the bulb that adds xenon -- thus the whole confusion/claim of xenon bulbs (xenon being the only gas used in HID systems, but for an entirely different purpose).

However, the cost of more output is shorter life, about one-fifth that of a standard halogen bulb of the same design.

Sylvania Silverstars add a light blue tint to bring the colour temperature up from 3200K to 4000K. However, light output drops from 40% more than a standard bulb to 10% due to the filtering effects of the tint. They appear brighter in part because they are producing more light, but also because the human eye does not see blue light well in low-light conditions. Thus, the glare of blue light makes it seem as if the headlights are brighter, but you're getting no improvment in actual illumination due to the colour shift. In fact, the higher the colour temperature, the less well a headlight performs in cutting through rain, fog and snow. Blue light is more easily scattered than yellow by water.