Ive been a big advocate of PIAA bulbs for years, I currently have a set of 80w/80w competition white bulbs in my accord. I was curious to try the classic car led set however so installed some about 3 months ago. My thoughts on these are mixed:
Installation was simple and quality seems very good. They are very very bright, and very white/ blue. This is to be expected as they quote 6000k as the colour temperature. My PIAAs are also quoted as 6000k but the CC leds are far more blue. In driving terms the PIAAs give everything a nice natural colour, road, signs, roadside greenery etc. The CC Leds however warp this in some unexpected ways. They pick out cats eyes for absolutely miles, even when dipped. If there is a cats eye on the horizon you will likely see it. By contrast they barely pick out anything green. Verges and hedges are only half as visible as with normal bulbs. This leads to a very 'Tron' like experience, where one is driving through a high contrast black and white (blue) tunnel, as opposed to down a lane.
There is also more glare from the CC Leds towards oncoming traffic even when dipped. I get flashed a lot when dipped, with the cut off at a sensible low point. The PIAAs do not attract this.
The cut is very clean saying that, but even so the overspill above must be significant (hard to measure).
So Im in a quandry: get another set of PIAA bulbs, which I prefer, but only have about 1 year in them at £130 a pair; stick with the CC leds, or do I pay even more and try a set of PIAA Hyper Arros LEDs? I think the PIAA leds might be similar to the CC leds, so Im probably going to get standard PIAA H4 bulbs. Shame as the CC leds on paper seem to be the best all rounder currently available.
