It must NOT be your imagination because I have noticed the same thing. I don't know about the MB but the Porsche's Xenons appear to be brighter than the Bimmer's. In fact, I think even the Audi's is somewhat brighter.
How about you Jack? You ought to know for sure
Originally posted by MJ: Is it my imagination or do the Merecedes and Porsche Xenons look much brighter than the M5's?
I assume you guys don't often encounter your own cars coming at you at night. Are you comparing what you see from inside the M5 - your own illumination of objects vs. the headlights of oncoming audis and porsches?
I'm not real sure, but my wife's '00 A6 has Xenons - and from inside both cars I'd say they're about the same. I haven't lined them both up in the dark and walked 300 feet away to look back - but I'm sure the perception of brightness would have as much to do with headlight alignment as it would with real brightness.
Anybody with a light meter up for a scientific evaluation?