I bought some bulbs from Halfords as a friend said these particular ones were loads brighter than stock, and they are whiter, rather than yellow, which is probably the reason. They were on two for one also....but when I fitted them they are ******* very bright, really light up lanes round my house, but they have this like blue bit, like a ring round the bulbs that shows up when you look at the lights....not keen on it, bit Max Power.

Osram Nightbreaker