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Difference in colour and brightness compared to standard cheapy bulbs: (PIAA on left of pic, standard cheap bulb on right of pic)
They're not the greatest pics I'm afraid, but you can just about see the more defined 'edge' to the beam and the whiter colour. I think I should have done a shot of the actual light produced on the road directly in front of you though - I went for a test drive after fitting them and the light cast from the car up to halfway to the end of the beam seems substantially brighter then the cheap ones. I can actually see the road and the kerb now when cars are passing head-on from the other direction! I'll update when I've been for a drive in really miserable wet conditions as that's when the cheap ones were worst...
Tom - my original post many moons ago is here but the pics and links aren't working properly I think it was from www.ultraleds.co.uk and they're the 6 LED white ones. They look alright but half the LEDs seem to fail after about 3-4 months due to the heat from the main bulbs. Not an overly cheap habit to maintain at about £6 a go...
Rip3z - look at where the light beam stops on the tree in the middle and the building on the left - it appears more 'defined' and less soft-edged than the standard bulbs, but I do admit that I could have done a better job with the photography...
The main difference seems to be the light on the road in front of you - seems so much brighter than before!
edit: I notice that my slightly less than favourable review of the sidelight LEDs, pointing out that they fail, seems to have 'disappeared' from the ultraleds site...
edit: I notice that my slightly less than favourable review of the sidelight LEDs, pointing out that they fail, seems to have 'disappeared' from the ultraleds site...
Got the "Extreme White Plus H4 12V 60/55=110/100W ANTI-VIBRATION BULB" that should be £66ish for £39 delivered
Was hesitant about spending £40 on two small bulbs but the fact that recently I've literally been unable to see the kerb or even the road 5 feet in front of me while cars are coming past me from the opposite direction meant that I thought I should for safety reasons!!