The track I was on had 18 degree banking. We didn't need to let off when turning but couldn't hold it to the floor or it would hit the rev limiter and run terribly. They said if we purchased 3, 8 minute sessions (cost like $1300), they raise the rev limiter to 5400 RPM for the last session. That should get you up to around 170 mph. As much fun as I had, I'm not going to drop $1300. I'll wait for another Groupon deal before I do it again.