These are selected under the CUSTOMIZE menu, under VINYLS.
These codes are entered the same way and will unlock sponsor vinyls. These codes are entered the same way and will unlock SPONSOR cars that can be selected by switching the car selection option to SPONSOR CARS from ALL CARS (using the right/left arrows on the menu). Type these codes at the intro screen (the one that comes up before the main menu that says 'Press Enter' - right before your profile is loaded).
