A pivot door assembly for a vehicle with a door opening, includes a door leaf for opening and closing the door opening, and a rotary post assembly for displacing the door leaf between a closing position and an opening position. The rotary post assembly has a rotary post pivotable for displacing the door leaf. The door assembly also includes a rotary post lever for coupling the rotary post with the door leaf, wherein the door leaf has a roller bolt guided in a roller bolt rail. The pivot door assembly further includes an upper portal strip arranged in an upper horizontal region of the door opening. The roller bolt rail is arranged in the upper portal strip.