Very good lamps. A significant improvement, especially the brightness of the low beam. I don't notice much of a difference in the high beam, although there could be a slight improvement here as well. I wouldn't say 50% brighter, although to be honest it says "up to" 50% in the description. I'd say 30%, which is pretty significant anyway. My thought when I see the word "performance". This means there will be a "dramatic" difference. It doesn't, so if I were to rate this description I would deduct from 1 star. However, as part of the improvement AND PRICES (wow). Can't help but give them 5 stars. Time will tell the whole story. If they last as long as the originals, I'll give the 5 stars. If they dry well before that time, they might not even be worth it at that price point. The coverage is good, and the illumination of the periphery has also improved. The color is roughly the same as the original bulbs, maybe a little whiter. Whoever said they were WHITE has a distorted view of this spectrum. 3600K is not that white. It's still yellow, but way better than the halogen colors of years ago. I have LED bike lights so I know how much whiter they are. Big difference.
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