Did you see this thread? Might be a good place to put this post and chat about the topic.
http://www.lexusnxforum.com/forum/9-new-2014-nx-general-discussion-forum/4665-nx200t-vibration.html
http://www.lexusnxforum.com/forum/9-new-2014-nx-general-discussion-forum/4665-nx200t-vibration.html