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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > E90 Xenon Headlamp (LHD)



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      07-03-2010, 06:36 AM   #1
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E90 Xenon Headlamp (LHD)

Need advice from the experts here.

My friend is selling me his E90 LHD xenon headlamp. However, my ride is RHD.

My questions:

1. Is there any difference between a LHD and RHD headlamp?

2. Can a LHD headlamp be calibrated for use in a RHD vehicle?

3. I read in some forum that Xenon headlamp can be adjusted to 'flat beam', which will not blind vehicles coming on the right. Anyone here has experience on this? What is the distance the adjusted light beam able to project?

Thanks in advance.
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      07-03-2010, 07:25 AM   #2
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Interesting question. 1st thing you should do is go to realoem.com and check the part numbers for the RHD and LHD headlamps. If they are the same then I'd say it is just a programming issue. However I think the beam patterns will be different in the lenses and you will find they will probably blind oncoming traffic. In the USA the xenons have a ddifferent range of arc between the driver's side and passenger side lamps. The driver's side swings about half of the degree range of motion as the passenger side lamp so as not to blind driver's on the oncoming left side of the car.
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      07-03-2010, 02:37 PM   #3
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They are different.

LHD projectors will throw a beam like _____/*****

RHD projectors will throw a beam like *****\_____
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      07-03-2010, 05:25 PM   #4
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Yes, I read about that in the forum too. But some forummers also said it can be adjusted to ___________ (flat beam) but the question is does that seriously impede the distance visibility at night? In another words, we can only see things very near to us but not farther.
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      07-03-2010, 06:35 PM   #5
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You need to use the proper housing.

The adjustment is to allow RHD cars to drive on the Continent and vice versa for short durations without dazzling oncoming traffic. Your own visibility is greatly reduced however and driving with an "adjusted" beam is quite dangerous.
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      07-03-2010, 09:12 PM   #6
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Quote:
Originally Posted by cb1111 View Post
You need to use the proper housing.

The adjustment is to allow RHD cars to drive on the Continent and vice versa for short durations without dazzling oncoming traffic. Your own visibility is greatly reduced however and driving with an "adjusted" beam is quite dangerous.
You hit the right spot, that's exactly my worries
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