Eeeehhhhh, Super Speedway is easy anyway though. I just suggest trying to hold out an extra lap or 2 if you can hile they, then you can pit all by yourself. That way you have a clear line to the pits, and no one around you. By the time you exit the pits, you should still have the lead. If you don't, then they should be right in front of you. If you can, draft with someone for a while. That will make you go faster, therefore, gaining time against everyone else. I was able to get 10 laps out of my tires usually. I would usually pit about the same time the other cars did for the last pitstop, and then I would run away.
I made a comparison of lap times and noticed a bad drop in times when you run red tires. I say this because on that sharper turn before the finish line, you slide away into the wall if you try to the same speed in that turn that you normally are able to do there. I noticed I had to drop about 15-20 mph to make that turn without sliding into the wall. Just get your own pit schedule going, of course ending up with one less pit stop. That should put you about a full lap ahead for most of the race. My last pit stop was before the AI's last stop, therefore while they pitted, I stormed the track at 200 mph for 7 laps. Easy win!!!!
Where is your progress now, whitez??