My only advice is that the little chicane things you can take flat out if you get the right line as the white parts don't count as out of bounds. I still have to find a second myself there though, doesn't help that I am still learning the track.
Learn the track and the car, be patient and consistent. Oh and be patient.
Its easier to have your own ghost line as a guide.
Took me all day today to gold them all today, but got it at the end.
Good luck.
The veyron is just a fat whale on wheels. I hate it so much. But, just come into the corners slowly and get out fast. Also, some corners you can take at a reasonable speed.