I used the FOV calculator in iRacing and it suggested 45 instead of the 78 default. I'm using a 22 widescreen monitor 36-40 inches away. Man--what a difference. I had a real problem finding the edge of the track initially. When I looked at replays where I thought I was on the edge of the track--I still had plenty of room. After the change I had no problem taking it all the way to the edge consistently. Also I noticed the elevation change of the corkscrew at Laguna much more pronounced. 45 does take away the side mirrors and some of the gauges...but I've been using the virtual mirror anyway. Long story short I think it's important to get your FOV right to have a more accurate experience in iRacing.