Doubt that it's the torque convertor. Something is out of balance in the drive train. Had this happen on my BIMMer and the '87 300e. On both , it was the front flex disc wearing out. But..you've got a brand new car there, so let them figure it out for you. I would not accept a brand new vehicle like a E430 with that kind of a malady. Hand them the keys and tell them to call you when they have it sorted out, period...
1987 BMW 325
[This message has been edited by jeffsr (edited 06-03-2000).]