Dunno where to post this...
But, I'm really annoyed with this. In Formula 1 it's called track limits (and going out of them).
Big problem is fast turn on Arines (turn 5, I think...) and/or cutting last turn on Waldorf (or turn 1 on Waldorf reverse).
There are also few spots on Forest path where you can cut corners on gravel/grass, but car handles like it's on tarmac (eventhough, you're inside track limits).
Entering pits can also help (Arines, Yamagata...) to improve lap times... well, I think it's kind of cheating.
p.s. kinda offtopic... but I think Touge can be used as ordinary track, not just for drift...
making lap times instead of drift points, why not ;)