1. Keep money over than $50,000 - $60,000 when unlocked the car, it always offer one time discount price.
2. In every tournaments you have 4 cars to buy. On the 1st and 2nd cars you don't need to full upgrade. Which Cup that you can't win, just leave it. When you get the 4th car, make full upgrade and come back to win them.
3. It's programming. If the leader is very rocket fast, 0% to win that Cup. You will see that if you are on 3rd, the 1st and 2nd positions are slow near together. But when you are 2nd position, the 1st leader car will run so fast away from you. Don't waste your time, just abort the race unless you want money or fame. Wait 3-4 hours then check it again.
4. Same as on the Elimination type too. If the leader is very rocket fast, wait 3-4 hours then check it again.
5. On Head-to-Head and Drag-Race types are very easy to win. So Play it first.
6. On Time-Trial type, I always drive the broken car since it doesn't matter. Then repair a car.
7. On Endurance, Autocross, Speed-Record, Speed-Snap and Hunter types. Try to race one time. If you can't win, write down your best value. Wait 3-4 hours then check it again. If you see the 1st car is lower than you, race it. Otherwise just abort the race.
8. On Hunter type, sometime you have to bump the opponent car (turn around) to make him slower.