i've had the silverstars for almost a year w/no problems. i'll probably switch to the GE superblues that i used to have though cuz the silverstars are too white and don't give as good visibility as the "yellower" bulbs on newly paved roads. they've been re-paving all the roads i drive on so i noticed that the silverstars don't work as well. it'll be worse once it starts raining all the time.