When it comes to TV size it’s important to consider the room size that the TV will be installed in and the average distance of the viewer from the seated position to the screen. Even though we would all like a huge 85″ TV or even larger it’s not always practical. Bigger is not always better.
Consider the room in which the TV will sit. As long as the furniture in that room is not permanently attached to the floor — and you’re willing to move it — then you have some flexibility in the size of the TV you can get.
Take for instance the picture on this post a 85″ TV in a room that measures about 15 feet in width and 22 foot in length with a viewing distance of of about 9 feet because it’s a 4K TV if this were a 1080P we would recommend the viewer to sit 12-13 feet away.
Hanging the TV on the wall, on the other hand, can add a foot or more to the viewable distance, which can be the difference between a 60-inch TV and a 72-inch model. Depending on what sort of mount you use and the thickness of the TV, your screen will still sit a few inches from the wall, but the specifics will vary from one model to the next.