Been playing this game over the weekend. It's pretty darn good actually.
Boring as hell with the driving aids on, but turn them off... and it's a whole new game. Very fun and quite addictive.
Couple annoyances though:
The AI seems a bit smash'n'bash happy.
The car that I'm driving always seems to be "faster" in a straight line than everyone elses - regardless of its stats.
Why have all different cars on the track at the same time? Doesn't that defeat the point of determining who is the best driver?
Obviously the bad handling of the cars is terribly exaggerated from real life to make the game more interesting. But still, it can be annoying at times having to go unrealistically slow through corners to avoid understeering.
Tyres seem to cool down way to quickly and don't seem to wear. For instance I did a donut in a R2 car for about 5 minutes. Then I simply drove on some grass to magically cool the tyres down in 2 seconds and then I continued my laps as though my tyres were still in tip top condition.
Brakes don't seem to overheat and fade even though the discs were glowing red hot numerous times.