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who remembers CIBIE super oscars? I remember mounting them on my mk2 escort and using flattened jubilee clips screwed into the front slam panel to adjust height :)

Agreed, LEDs are poor at distance so im going to have a go adjusting them
 
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Mine must be bright as I have quite a few people flashing me until I put my ful beam on. Seems to be a high percentage of people annoying me at the moment as they put full beam on just as they pass my front bumper making me lose my night vision. Grrr
 

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Disappointing to read this about the LED's, as I have a new M240i on order to replace my previous M240i that had Xenons, and even though I thought the Xenons were great I was hoping that the LED's would be even better.
 

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I think the problem with LEDs must be in the colour rendering. I think they are 6000k. They look nice and blue but if it's wet the light is not well visible. Usually demons are between 4300k to 5000k so less blue and therefore more visible to human eye at night.
 

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Paul CS said:
I found the lights on this M140i too low. I simply adjusted them 1/2 turn up using a 6mm Allen key and now they are brilliant.

Hope that helps.

Paul
I've given that a go - hopefully they will be a little better as I do find them weak, and that they lack the intensity of the xenons on my pre-lci.
 

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Discussion Starter · #33 ·
Mad_Mac said:
I think the problem with LEDs must be in the colour rendering. I think they are 6000k. They look nice and blue but if it's wet the light is not well visible. Usually demons are between 4300k to 5000k so less blue and therefore more visible to human eye at night.
Which led would you recommend to give better distance brightness? My car is with the dealer and they have said the lights are set correctly. Has had a software update today .
 

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Discussion Starter · #34 ·
Another thing I've noticed with the led's is they make driving in fog difficult! Kind of creates a cloud effect as they are so bright close up.
Bmw also don't have an upgraded led as its part of the headlight you can't just replace the led.
 

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Jamiebux said:
Mad_Mac said:
I think the problem with LEDs must be in the colour rendering. I think they are 6000k. They look nice and blue but if it's wet the light is not well visible. Usually demons are between 4300k to 5000k so less blue and therefore more visible to human eye at night.
Which led would you recommend to give better distance brightness? My car is with the dealer and they have said the lights are set correctly. Has had a software update today .
You can't change leds like xenon bulbs where you could pick anything between 4000k to 12000k. Mine were pointing too low so I adjusted them slightly and I'm happy with the result.
 

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Jonnybravo said:
the 1er has poverty spec adaptive lights, the 2er has the proper spec leds
I may be wrong but I thought the 2 series also lost the "voodoo" adjustable beam adaptive headlight tech when the LCI replaced the Xenons with LED in mid 2017, meaning High Beam Assist is now just an auto dip/main beam switch like the 1 Series rather than moving/dipping each beam independently to wrap around the car in front and to keep the verge lit whilst not blinding oncoming traffic etc?
 

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Mad_Mac said:
I think the problem with LEDs must be in the colour rendering. I think they are 6000k. They look nice and blue but if it's wet the light is not well visible. Usually demons are between 4300k to 5000k so less blue and therefore more visible to human eye at night.
This made me wonder what effect light colour has on vision when driving so I did some quick reading. I knew the human eye is most sensitive in the green region but it turns out the peak sensitivity is towards the yellow end of green (555nm) and with fully dark adapted vision it's towards the blue end of green (500nm). As during driving our vision is never dark adapted it's safe to assume the peak of sensitivity will be around 555nm. So my next thought was how does colour temperature relate to frequency and after a bit a research I found Wien's displacement law which gives us a colour temperature of 5225K for 555nm.
LEDs lighting is around 6500K I think which as you say is a little blue for vision but has the advantage that including blue improves your ability to stay awake when driving at night.

I personally think the problem with the led lights is that the light output is too uniform, you get an even light throughout the beam pattern which is great for dipped beam but on full beam you want a bright spot in the centre to give you the distance which is there on the LEDs but not anywhere near as pronounced as on my e91. With the lights more carefully adjusted I've moved the bright spot so it points down the road which has improved things but is still a little lacking.

Sent from my Pixel XL using Tapatalk
 

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Tom314 said:
Mad_Mac said:
I think the problem with LEDs must be in the colour rendering. I think they are 6000k. They look nice and blue but if it's wet the light is not well visible. Usually demons are between 4300k to 5000k so less blue and therefore more visible to human eye at night.
This made me wonder what effect light colour has on vision when driving so I did some quick reading. I knew the human eye is most sensitive in the green region but it turns out the peak sensitivity is towards the yellow end of green (555nm) and with fully dark adapted vision it's towards the blue end of green (500nm). As during driving our vision is never dark adapted it's safe to assume the peak of sensitivity will be around 555nm. So my next thought was how does colour temperature relate to frequency and after a bit a research I found Wien's displacement law which gives us a colour temperature of 5225K for 555nm.
LEDs lighting is around 6500K I think which as you say is a little blue for vision but has the advantage that including blue improves your ability to stay awake when driving at night.

I personally think the problem with the led lights is that the light output is too uniform, you get an even light throughout the beam pattern which is great for dipped beam but on full beam you want a bright spot in the centre to give you the distance which is there on the LEDs but not anywhere near as pronounced as on my e91. With the lights more carefully adjusted I've moved the bright spot so it points down the road which has improved things but is still a little lacking.

Sent from my Pixel XL using Tapatalk
Makes sense as the day light is 5500k as far as I remember.
Any way I'm happy with my leds as they are miles better than halogens o had in my Audi
 

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Like many on here - I've experienced on my cars xenons, LEDs, adaptive and non adaptive. The best in my opinion were xenon adaptive. It's my understanding the adaptive LEDs on the M140i give the visual output a little lift and combined with the cornering element provide the best light performance. I'm about to pull the trigger on my second mlite (coming from a 16 plate 3 series M Sport with LEDs) and will be going this route (with headlight wash!). As someone who does a lot of country driving and 30k+ a year they're essential options for me.
 

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Over the weekend I adjusted my headlights, giving 180deg anti-clockwise turn with a 6mm alan key, this has certainly improved the lights and im quite happy to leave them alone now. Thanks for the tips.
 
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