I've been playing this all weekend. Somewhere past level 30 at the moment.
I have mixed thoughts so far...
The physics seem to be better in this one. Biggest improvement is probably the tyre model. I feel like it would be a lot more realistic now, if only there wasn't this nasty steering aid stuff that can't be turned off.
I can't help it tho... it feels like a polished FM3 with ruined steering.
FM2 felt like a simulation, like i was in control of the cars... FM3 felt a bit arcadey in comparison (welcome to steering aid), FM4 feels even worse in this regard. Which is a shame, because physics have become better and better since FM2. The controls feel like NFS Shift now sometimes (obviously an exaggeration, but yeah)...
My biggest gripe however is that Porsche isn't in the game anymore. I want my 944 turbo!