Win race 7 of 15 from the American Royalty Racing Club.

Win race 8 of 15 from Choppers of America Racing Club.

Enter the options screen and select the "Cheats" option. Enter "rimbuk" at the cheat menu.

Win all Sport Bikes club races to unlock the Kawasaki Ninja ZX 12R.

After you unlock Class A cars, you may notice that the really fast cars are $250,000 each.
In order to get that money, sell all of your other cars. The Cadillac Escalade EXT is
worth over $50,000.

Win race 3 of 15 from Choppers of America Racing Club.

Defeat Vanessa in 3 of 3 races in San Diego.

Win race 3 of 15 from the American Royalty Racing Club.

Win all the San Diego Luxury Rollers races to unlock the Mercedes Benz SL55 AMG "DUB
Edition".

Defeat Kioshi in 3 of 3 races in Detriot.

Win all the Chopper of America Bike Club races to unlock the Hotmatch Skully bike.

Collect twelve Rockstar Games logos to unlock the "Flags" option in your garage.

Win the Big Playas to unlock the Mercedes Benz G55 AMG.

Win race 1 of 14 from the Luxury Rollers Racing Club.

Win all four of Phil's races in career mode to unlock the Hotmatch Cuevito bike.

Enter the options screen and select the "Cheats" option. Enter "getheadn" at the cheat
menu.

Win the Balboa Park Tournament in San Diego to unlock the Chrysler 300C "DUB edition".

Win race 1 of 14 from Original Riders Racing Club.

Defeat Leo in 3 of 3 races in Detriot.

Hold the Hand Brake and Gas when getting ready for a race. After the screen focuses on
your car, release Hand Brake. If done correctly, when it is time to go the meter on the
right will fill up and you will get a slight boost.