Easily win Long Races
I know this is kinda cheap but to handle the endurance races without losing any sleep, Use the gameshark codes for inf. Fuel and tire life. Just make sure it is your tires only.
This way you never have to pit and your car will pass everyone else when they do! Just leave the system on overnight and check on it in the morning. I used a trick like this in SSBM too. Getting mewtwo is pain otherwise.
If you need more help, we've got more Gran Turismo 4 cheats and also check out all of the answers for this game
Comments for this hint