Recommended settings
If you put more weight in the back of the car, it should go faster. The more weight in the backm the more grip your car will get. Also, adjust the gear ratio to the size of the track. The more grip and the bigger the track, for example, Williams Grove, and the higher gear ratio, the faster the car will go. If the car is too fast (more then 75 rpm), then you have too much gear.
Tear-away shields
To get the most out of your tear-away shields in the game, press Triangle during game play to change views. Cycle to the view which shows your car the farthest distance away from the camera. The dirt will fly all over the screen and you will still be able to see.