I played some iRacing this weekend and, now that you've mentioned it, I noticed it a lot more I think it is more of an issue with open cockpit cars. At least if you're in an in-car view your view is going to be limited anyway.
It was still incredible though. I felt a lot more confident in fighting for positions (not that that stopped me finishing only a few from last) having a superior viewpoint of the action, and I could really attack apexes. Glad I never invested in a three-screen setup a couple of years back. This is, of course, far better.
It felt really weird, but it was a sunny day (in the game) and every time I drove into shade and out again I could almost "feel" the sun on my arms. Really odd sensation, which obviously makes no sense but clearly my mind is being tricked.