Well I've driven about 6,000 miles with these bulbs. In direct sunlight my inner lenses look fine but on overcast days I can see a bit of yellowing on the inner lenses. Today is overcast and I took these pictures, which don't show much. I can't say for sure that these bulbs are the cause of the yellowing, this is the first I've noticed since the car was new in 2003. Does anyone know if standard bulbs can cause yellowing of headlight lenses?
