Well guys to be honest, I was really never into simulation racing. I didn't even care about cars really until I got my mini cooper when I was 16. Before then, all I really played was need for speed because it was cool.
Now, during the summer, I had an itch to play a real racing game, and someone recommended Forza 3 since I have an Xbox 360. So, any comparisons I make are based on Forza 3. I have heard good things about iracing, but I don't have a steering wheel(yet).
Compared to Forza 3, it is a lot better, but based on other sims I can't say because I don't know.
Regardless, here is some footage of the 2012 M5 : )
[u2b]A couple of people had questions for me regarding the damage model and amount of tire smoke, so I made a video for them. The tiresmoke is in the end.
Forza 4 Demo Part IV: Taking timmy to school