Honestly I would think/hope/guess that Trump is much too smart to end up on a pee tape. Although with his back against the wall I could see him agreeing to some sort of illicit activity to save his company... that is now being used to blackmail him. And from what I understand it's well known that Trump's business was bailed out by Russian Oligarch money after his sixth (?) bankruptcy, when no one else would finance his company.
This is why I think the public has a right to see president's tax records, because if there was some hidden illicit financial tie between him and Russia, Trump woulda been dumped long ago. No congressional hearings, not independent investigators... if only his taxes would have been made available prior to the election all of these "russia" questions would have been answered long before he took office.