I don't know what your talking about pandra. many of my buddies and I have led headlights and have never had any overheating problems, even with the some of the cheap ones we tried. I have a set of G7 PHILiPS Lumileds 50W H13/9008 LED Headlight Bulbs. They are marketed under a few names so search around. They are designed as a true conversion bulb, and have the same light output pattern as a halogen bulb, so they work with the factory housing. The philips bulbs can also be adjusted so you can get a clean cutoff. I really like mine. The cree cob aren't bad either. They are brighter but they don't have the adjustment. I wouldn't wast your time and money with the "high performance" halogen bulbs such as the sylvania Xtravision or silverstar ultra.