I always drive with light since my holidays in Sweden. It is seen much better on the highway and at dusk SO. But because I have of course an enormous wear. My Philips Xtreme Vision have no daytime driving light with about 8 months kept the drive Osram Longlife with day about 10 months. Now go to the Ultralife because I just wanted to try it. Currently I have the Longlife (right) and the Ultralife (left) in it and see no difference in the color of light, the brightness or the range of the light cone, although this is indicated on the packaging so. Have you only been about 5 months there, so can not say anything to burn time, but the illumination is not my opinion, unlike the Long Life lamps. According to package 3 years of OSRAM's warranty on manufacturing defects. Whether a blow the bulb is regarded as production error has since however questionable. So do not hope for warranty service if the bulb burns out after 2.5 years. That's normal use. Nevertheless good lamps, if the shelf life as convinced comes here again n Update. Until then buy recommendation on my part.
UPDATE: I sold the car after 12 months and the lights are even now, 3 months later, still without any problems. Durability date so I can follow up of 15 months, the now but unfortunately not.
