Mat Hoffman's Pro BMX Cheats...
Big Tires
Pause gameplay, hold L and press Down, B, B, Down.
Display Balance Status
Pause gameplay, hold L and press Left, B, X, Y, X, B, A.
Divide Trick Score by 10
To divide your trick score by 10 pause the game and hold L, then enter the following code: UP, DOWN, UP, B, B, X.
Extra Course Time
Pause gameplay, hold L and press X, Up, B, A.
Get Burnside Level from Tony Hawk's Pro Skater Game
Use all characters to get all 30 covers and 2 gold medals
Get Grandma FMV
Use Grandma to get any medal on both competition levels
Get More Course time
After pausing the game hold L then press X, Up, B, A.
Get Neversoft FMV
Use Tony Hawk to get any medal on both competition levels
Get New Colors
After pausing the game hold L then press Down, Down, Down, Down.
Get Tony Hawk
Get all 30 covers and 2 gold medals using any character in career mode
Get Warehouse Level from Tony Hawk's Pro Skater Game
Get a 200,000 point combo without using the cheats
Jump higher
To make your rider jump higher, pause the game and hold L, then enter the following code: UP, UP, UP, UP.
Multiply Trick Score by 10
To multiply every trick score by 10, pause the game and hold L, then enter the following code: X, B, B, UP, DOWN, DOWN.
Play as Granny
Pause gameplay, hold L and press Up, X, A, A, Down, B. Or, retry a level in Career Mode 10 times.
Slow Down Time
To slow down time, pause the game and hold L, then enter the following code: X, Y, B, A.
Special Always Available
Pause gameplay, hold L and press Left, Down, Y, B, Up, Left, Y, X.
Turn On Perfect Balance
To turn on perfect balance pause the game and hold L, then enter the following code: X, LEFT, UP RIGHT.