Originally Posted by vtec2STi

I would guess the 21 thing is becase of this style of track and for the same reason that we all pay an increased insurance premium until we turn 25 years old. You can get in real trouble on this track if you forget yourself if even for a second.

By this I mean, Sebring is not a parking lot auto-x track where 80 mph is top speed . It would be easy to do 130 + mph on this track straight into a hair-pin baracade There are several high-speed turns on this track where it could be easy to over do it. Most of the 17 turns are 40-100 mph range though and can be negotiated with ease.

It is great fun Just need to go easy for the first few laps!