There is a thread in the AC discussions about FOV. This is not something that I have toyed with in GSC, I have had mine set to default and have adjusted the seat to give me the desired position. I currently run on a 32in TV and sit about 28in away so according to calculations that I found online I worked out that my FOV should be 32. I found this to be a lot closer than I was used to so added +5 to give me 37. Having just spent the last few hours testing a variety of cars and seat positions I can honestly say What A Difference! I think it will take a while to get used to close racing with other cars on track due to less peripheral vision when using a single screen, but the added realism and immersion make it worth the effort to adjust. Anyone who is new to sim racing or GSC, do yourself a huge favour and take the time to correctly set up your FOV, it is Definitely worth it.