Posted by Jim Cash on September 24, 1998 at 10:32:09:
In Reply to: Re: Xenons posted by John on September 24, 1998 at 10:16:57:
: As an alternative, I just upgraded the high beam bulbs from 80W (stock) to 100W. This has definitely made a difference for only about $30. I'd go higher if I could find a greater wattage bulb.
Regarding the use of higher wattage bulbs in the high beam units of the E39.
For what it is worth here is a direct quote from one of the BMW AG lighting design engineers.
Please do not use bulbs with higher wattage (80W). You loose the
homologation of the headlamp and the additional heat will destroy the
That may be the "official line" or there may be some real issue.
London, Ontario, Canada
BMW CCA 102929
E39 97 540iA