Comparing the two, the OEM Halogens are quite a bit dimmer, yellow... of course that's compared to the LEDs. I like these LEDs, they are nice! At night, there is no comparison between the two. However, I really noticed how the outer ring is noticeably dimmer than the inner, but one light source for 2 rings will do that, I suppose. With the actual HID mains, its not noticeable. Anyway, the yellow LED fogs is next on the lighting upgrade list.

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JC Dillon
2008 X5 4.8
1989 635 CSI