Entering the pits if you touch the curb between the track and pit lane at all, you get launched into the air, even at slow speeds. Sorry no reply, but its pretty easy to replicate from my experience.

ehem

http://www.lfsforum.net/showthread.php?t=6854

http://www.lfsforum.net/showthread.php?t=2192

Oops. I did a search, but for 'south city' not 'SO'

didnt have to search, just had to use your eyes to go down 10 or so threads lol