Unlock All Circuit Tracks:
On the main menu, press DOWN, R, R, R, BLACK, BLACK, BLACK, X.
Unlock All Drag Tracks:
On the main menu, press RIGHT, X, LEFT, R, X, L, WHITE, BLACK.
Unlock All Drift Tracks:
On the main menu, press RIGHT, RIGHT, RIGHT, RIGHT, LEFT, BLACK, R, WHITE.
Note: Alternate Code - LEFT, LEFT, LEFT, LEFT, RIGHT, BLACK, R, WHITE.
Unlock All Sprint Tracks:
On the main menu, press UP, BLACK, BLACK, BLACK, R, DOWN, DOWN, DOWN.
Unlock Drift Physics in All Modes:
In the Main Menu Screen enter: R, UP, UP, UP, DOWN, DOWN, DOWN, L.