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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 01-05-2010, 02:26 PM
ill_kuma's Avatar
ill_kuma ill_kuma is offline
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Mein Auto: 2001 530i
Chosing H8 halogen bulbs...whats the diff?

Is there any difference between these 3 H8 bulbs from these 3 vendors?...besides the price difference. Does anyone know from experience which one is brighter than the other?
umnitza - Predator Xenix HyperMatch 4200K- $24.98 + $10.55 (shipping) = $35.53
DDM - Halogen H8 bulbs 4000K - $14.95 + $13.08 (shipping) = $28.03
E92-Lighting - H8 SUPER WHITE 43550K - $22.99 + $7.99 (shipping) = $30.98
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  #2  
Old 01-05-2010, 03:31 PM
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Fudman Fudman is offline
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Mein Auto: '02 530i Sport auto
Without having ever seen or used these bulbs, I can tell you that they are blue tinted halogen bulbs. The primary difference is slight differences in "whiteness" of the beam. Halogen bulbs emit a slightly yellow (lower K value) tinted beam. Most buy these tinted bulbs to get "xenon-like" performance without knowing any better. Yes, the beams are whiter. However, the light output is significantly lower due to the blue tint, which absorbs the yellow light to give a whiter beam at the expense of light output. Unless you boost the wattage (creating problems with wiring, DOT illegality, etc.), your lighting performance degrades. Since you are asking about H8s (and not H7s), I presume these are intended for your foglamps. This is a cheap and easy approach to match up your foglamps to your xenon beams. However, your poor OEM foglamp performance gets really poor using these bulbs. Bottom line, this is a cosmetic change (nothing wrong there). Just don't expect any lighting performance improvement. Been there, done that.

See http://www.danielsternlighting.com/ for everything you ever wanted to know about auto lighting.

Last edited by Fudman; 01-05-2010 at 04:00 PM.
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Old 01-05-2010, 06:25 PM
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bluebee bluebee is offline
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Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by ill_kuma View Post
Does anyone know from experience which one is brighter than the other?
As a slightly OT aside ... I don't profess to understand bulb tradeoffs, but, bear in mind that "brighter", in and of itself, is not always the only consideration you may be concerned with ... (the links may help answer your question though).

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