16's on a w126 body look like they belong there...not too big and not too small...
I guess I am a purist too becuase it took a lot of deciding to finally get my wheels for my car. I REALLY didn't want to ruin the stock look however the 14's were just NOT cutting it. I was up on the sidewall daily (I drive sorta fast) and ate through tires like mad. These 16's seem to be holding up a little better.
The only way I would put aftermarket (but professional!) tint on my 300SD was if it was black...which hopefully some day it will be
I know changing a car's color is a sin but I really want a black 300SD and they are hard to find.