So I installed these in place of the factory high beam bulbs in the 2019 4Runner because I run in fog on my way to work. The factory bulbs were white H16s and illuminated the area directly in front of the car quite well. In theory, if you switch to yellow bulbs, you can see farther in fog because the yellow light isn't reflected. behind the same as the white ones. These bulbs are much brighter than H11 bulbs and I was concerned they would be too bright to leave on for oncoming traffic. And they may be, but I've only had a blink or so in the last month. But when driving in heavy fog I think they are too bright yellow to be as effective as other "fog" lights. I'm sure oncoming drivers can see me further, but when I compare the visibility with them with just my low beam I can't tell much of a difference. But they seem to be of decent quality and look cool so here's the thing. I will report later on the durability.
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