I’ve been using the VRC NA 1999 a lot lately. Here are some things I’ve noticed:
1) Only use the oval version on superspeedways (Indy, Michigan)
2) How you setup your car is very important.
3) Sharing your setup with the AI cars by saving it as ai.default can be helpful.
4) How the AI lines are drawn for the track is super important. You might have to re-do these yourself sometimes. I’ve been sharing some on the site when I can. Sidelines is super important, not having the fast lane too close to the wall is important, making sure you have a safe line in/out of the pits is important.
5) If you’re doing a race weekend, make sure you give the AI plenty of practice and qualifying time, otherwise you’ll see a few immediately dive straight toward the pits at the start of the race, screwing everything up.
6) How you personally drive is critical. If you’re driving like a maniac, it’s going to screw all the AI cars up.
7) Editing the gas consumption and tyre wear so that you’re close to running out of gas at same time the tyres are going out is helpful because the AI won’t pit just for tyres but will change their tyres if they are out of gas.
So there’s a lot of things that go into it and oval racing obviously isn’t perfect, but there are steps you can take to have awesome races that last 100+ laps.