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Re: euro ellipsoids (archive)

[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]

Posted by EG on November 21, 2000 at 15:42:14:

In Reply to: Re: euro ellipsoids posted by Peter Warton on November 20, 2000 at 17:05:57:


Indeed there is... for a very long treatise, look here. The upshot is, European regulations specify a different, and generally agreed to be better, light pattern from headlights. The US DOT regulations are old and, well, bad.

Thanks for the pointer.

However, the comparison at the top of the page doesn't apply to ellipsoids -- it compares e-code H-4s with old-school sealed beam lamps. I agree wholeheartedly with the facts in their comparison and have been using H-4s for years in my previous cars.

I think the ellipsoids in my US spec e34 already are an e-code style beam pattern and bulb. (FWIW: the ellipsoids use the "step" rather than a 15 deg slope referenced in the website. The step pattern was, I believe, developed by Cibie in order to ease the glare in truck mirrors because it doesn't rise as far on the sides.)

So, I'm not convinced that there is any difference for e-code ellipsoids other than possibly the bulb wattage and the addition of city lights to the lamp housing. Personally, I wish the conversion to e-spec H4s was simple.

Thanks...wishing for more light on the subject...


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