1st Person Mode After starting a game, enter the following during gameplay:
Hold L1 + R1 and press Circle
Controller Tricks Try the following during gameplay for some intersting results:
Dash:
Press Drive + Accelerate
Stop:
Press Reverse + Brake
Drift:
Press Right/Left as you quickly shift into Reverse then back into Drive (do this while going fast)
Drift Stop:
After doing a Drift try the Stop trick
Invisible Destination Mode Enter the following before the Character Selection Screen appears:
press and hold Start

There will be an on-screen confirmation of correct code entry.
No-Arrow Mode Enter the following before the Character Selection Screen appears:
Hold R1 and press Start

There will be an on-screen confirmation of correct code entry.
Unlock Another Day Enter the following before the Character Selection Screen appears:
press and hold R1.
Keep holding R1 until after you select your driver.

There will be an on-screen confirmation of correct code entry.
Unlock Bike Enter the following at the Character Selection Screen:
L1, R1, L1, R1, L1, R1
OR
L1 + R1, L1 + R1, L1 + R1

Unlock Expert Mode Enter the following before the Character Selection Screen appears:
Hold L1 + R1 and press Start

There will be an on-screen confirmation of correct code entry.
View Speedometer After starting a game, enter the following during gameplay:
Hold L1 + R1 and press Square
Wide-Angle Mode After starting a game, enter the following during gameplay:
Hold L1 + R1 and press Triangle

(x) (f) (x)