Check the manufacturer's handbook for the recommended tyre prssure and add about 10psi to that. They probably want you to leave all the gizmos connected so you can show your passengers how well they work. If they're just ordinary people off the street, not competitive drivers, they'll be very easy to impress anyway. I love giving newbies their first taste of a race track, I've had them screaming out in fear, when I was just warming the car up on a sighting lap.
