Only been to the Ring a couple of times, but it definitely helped to have driven it on the PS2/Xbox in terms of having an idea of where you are on the track. The circuit in GT5 is good, although I'm not sure it's any more accurate than GT4 or Forza.
Flatout - should have moved over and lifted to let the M3 past!
Flatout - should have moved over and lifted to let the M3 past!
Get some lessons, and listen to the briefing at the beginning of a track day.