Made a great find today.

I have tried bulbs from a few sites online that do set off warnings in my 2002 x5 4.4i.

Gave these a shot, and no warnings, plus they are cheaper than anywhere I have seen!

2 x 18 LED 39mm White Xenon Festoon Bulbs Light 12V:eBay Motors (item 230410161845 end time Dec-15-09 23:43:37 PST)

I am assuming it has something to do with the fact that these have 18 led's per bulb and the other festoon style bulbs I tried had no more than 9..Who knows.