>I think Byron and Toby answered your first question. I would say the vast
>majority of V-12s if they are at a 60 degree Vee. the VR engines are 15
>degrees so how can it be the same. balance shafts are different that
>dampeners. look at the NA BMW V-12, and the NA MB. no I wasn't you just
>didn't answer the question.
>

I've ridden in 2 generations of MB S600 and a 760IL. I can honestly say that
the W12 powered Pheaton I rode in was just as smooth. But you'd have to have
actually been in one to know what you're talking about.