I got a 55 inch curved (4200R) TV and am curious if the actual screen curvature influences the matematicaly correct fov numbers I use in sims, or is the recommended correct number for 55 inch and all other criteria still the correct one? I came across a picture stating that 55" with 4200r curvature is the equivalent of 55,8" flat at 8 feet. So what about say 67 cm instead of 8 feet then?
It will make a difference but its not going to be enough to be worth worrying about. If anything you could choose a slightly wider FOV as the corners of the screen will be closer than a flat screen. In raceroom the choice is limited anyway so pick the one nearest to flat.