Most of you will know that the daytime running lights on the new Zed are pretty yellow in colour, especially when you see Audi's with their superwhite LED lights. The new 3 series coupe and 5 series both have LED rings and I wanted to try and achieve the same sort of look.
Picture from the whatcar.com video review:

Knowing what was possible with a set of GP Thunder 8500K 35w H8 bulbs:

See full thread here: http://www.e90post.com/forums/showpost.php?p=2907122&postcount=97
I bought a set from ebay for $30.19 USD (£20.52)
When I fitted them (during the daytime in bright sunlight), I was far from impressed. The outer ring was very dim, although white looking, but they weren't putting out a lot of 'useable' light. In dull/overcast conditions they looked pretty amazing though. There was also a hint of blue in them, from some angles, which I wasn't too keen on. The daytime running lights run brighter than the normal side lights (same bulb, but it dims when you put on the side lights). No pictures of them, but I took them back out the car after a day and went back to the drawing board.
GP Thunder also do the same bulbs at 7500K and they have recently introduced a new 5800K bulb. The K value is the colour temperature and the higher you go, the 'blue-er' looking the light is, but the less usable the light is, when you stay at the same wattage. I was tempted to try the 7500K bulbs but didn't think they would be a big improvement over the 8500K's.
Eventually I decided to try the new 5800K bulbs, so ordered a set on ebay, from the same seller.
Cost was $25.99 USD (£17.67)
The photos below don't do them justice, and I don't have any pics comparing them side by side, but I am really pleased. They are much whiter looking but still very bright. They are also very visible during the day in bright sunlight.


If anyone wants my spare set of 8500K bulbs PM me!
Picture from the whatcar.com video review:

Knowing what was possible with a set of GP Thunder 8500K 35w H8 bulbs:

See full thread here: http://www.e90post.com/forums/showpost.php?p=2907122&postcount=97
I bought a set from ebay for $30.19 USD (£20.52)
When I fitted them (during the daytime in bright sunlight), I was far from impressed. The outer ring was very dim, although white looking, but they weren't putting out a lot of 'useable' light. In dull/overcast conditions they looked pretty amazing though. There was also a hint of blue in them, from some angles, which I wasn't too keen on. The daytime running lights run brighter than the normal side lights (same bulb, but it dims when you put on the side lights). No pictures of them, but I took them back out the car after a day and went back to the drawing board.
GP Thunder also do the same bulbs at 7500K and they have recently introduced a new 5800K bulb. The K value is the colour temperature and the higher you go, the 'blue-er' looking the light is, but the less usable the light is, when you stay at the same wattage. I was tempted to try the 7500K bulbs but didn't think they would be a big improvement over the 8500K's.
Eventually I decided to try the new 5800K bulbs, so ordered a set on ebay, from the same seller.
The photos below don't do them justice, and I don't have any pics comparing them side by side, but I am really pleased. They are much whiter looking but still very bright. They are also very visible during the day in bright sunlight.


If anyone wants my spare set of 8500K bulbs PM me!


