Tip for the NASCAR's, turn off ABS completely (on ovals only).
First race is extremely easy, I finish 5 seconds ahead of 2nd car at least. I nail the second one if no one shoves me off the track, and I win the third one every single time. I'm usually top 3 until the last lap on 4th track but then bottle it, and I'm last on Daytona every single time because someone will always push me off.