SYLVANIA SilverStar Ultra is our brightest down-road headlight*. The brighter the bulb the farther you will see downroad.

We found that the premium bulbs, as a group, deliver a whiter light and up to 19 percent more output than the standard or OE bulbs, and that can be more pleasing for drivers. But none of the premium bulbs allowed us to see farther on our headlight test course than the standard or OE bulbs.

approximately one year Sylvania says its Silver Star bulbs are 35 percent to 50 percent brighter than standard halogens but “may have a shorter life span.” The company says the average life of Silver Star bulbs is “approximately one year.” Always look for a high-quality light bulb that provides adequate light and illumination for safe ...

The rated lumens value of the Sylvania Automotive H7. BP replacement bulb is 1571.

But in a nutshell, yeah you'll probably like them better than stock bulbs. They are whiter and brighter but will not last as long. If you don't mind the install, and won't mind replacing them in 10, 12, or 14 months, you'll be happy.

Osram and Sylvania are the same company, though most of what Sylvania sells is junk. If you're just looking for the best output, go with a relayed harness kit (check other thread) and Osram 70/65W +50 rallye H4's. Great lumen output and decent life (around 250hrs).

Last year, OSRAM globally carved out its general lighting lamps business into a new company, called LEDVANCE. LEDVANCE is a separate company from OSRAM SYLVANIA. OSRAM has licensed the OSRAM trademark and the SYLVANIA trademark for general lighting products exclusively to LEDVANCE.

LED headlight bulbs are going to be 3 to 6 times brighter than your halogen bulb and can be 2 to 4 times brighter than some HID systems. LEDs have the longest lifespan of 50,000 hours of useable time. Compare that to 5,000 hours with HIDs and you will understand why LEDs are such a popular upgrade.

The type of globe – there are lifetime differences between globe types; example a high quality (OEM) standard H4 bulb is around 600 hrs and 550 hours for H7.

The light output is higher with H7 systems than with the H4 ones because two lamps interact. But since H7 systems require four bulbs instead of two, and bulbs should always be replaced on both sides at the same time because of their similar lifetime, H7 systems have a higher cost factor over time.

Ring Xenon200 H7 Ring's brightest performance upgrade, the Xenon200 H7 bulb offers improved vision by up to 200%. An impressive 3,700K rating is also featured, producing a whiter, more stylish light. One of the brightest H7 bulb options, these road-legal xenon bulbs will bring you brighter vision when driving at night.

By the mid-1980s, the GTE Sylvania electrical equipment product line and name was no more. In 1993 GTE exited the lighting business to concentrate on its core telecomms operations. The European, Asian and Latin American operations are now under the ownership of Havells Sylvania.