While many players choose FOV based on "feel," there is a mathematically correct setting based on your physical setup. This is calculated using your and the distance between your eyes and the monitor . Pro Driver Reveals FASTEST FOV!
Experiment with small increments of 2 or 3 degrees until the world looks "correct" to your eyes.
: While some "pro" sim racers prefer a very narrow FOV (around 30-35) for a 1:1 scale, many casual players on Reddit find a wider FOV (around 90-100) more comfortable for general visibility.