Sylvania Silverstar headlights are said to be "great". But I wonder if that was said by users, or by the sellers. I bought a pair of them on ebay. It was cheaper than in the stores, where a pair of them sell for $30 and up.
I bought them because my mid 90s Plymouth minivan has poor headlight brightness. All of them do and there are a lot of complaints about that make/model on the web. Part of my poor visibility was due to cloudy lenses and headlight adjustment. I cleaned the lenses and adjusted them. That was a big improvement, but I was still not satisfied.
I bought these bulbs last May on ebay. They were a slight improvement. But not what was advertised. They are also not as blue in color as stated. They arrived in a sealed package, and new. For the amount of improvement I was disappointed, but I bought them and every bit of extra brightness was a plus, since I do a lot of night driving and often on rural roads.
Anyhow, it's about 9 months since I installed them, and last week, one bulb burned out. I should mention that I dont drive all that much. I contacted Sylvania and they said they have a one year warranty on those bulbs, but need proof of purchase. I said No problem, I have the confirmation email from the ebay seller, which I can forward to them.
I was told that they do not warranty items purchased on ebay or other online auctions. Only from actual stores such as auto parts stores, Walmart, etc.
I made sure to tell them exactly how I felt about their warranty (or lack of one). And let them know that I will not buy anything from their company anymore.
What gets me, is that I can buy items sold by legitimate brick and mortar stores on ebay. For example, Autozone, Carquest, and so on.... All of them sell on ebay, and there are National auto parts sellers who have actual stores, but also sell on ebay.
I am not impressed in the least by these bulbs, and wont buy them again. I now have a color imbalance on my headlights, because I have the one remaining Silverstar bulb on one side and a standard halogen on the other side. I suppose I'll have to just go back to the standard bulbs on both sides. I did check on LED replacements, but I was shocked when I found they cost $200 and up....