there is one corner at my track where you HAVE to use brakes with the 12th to make it around the corner
( every other corner you don't need brakes. we don't use tyre additive, or spray anything on the asphalt)
i've managed to set my maximum brake down so it brakes in a straight line (it does it quite effectively!). so just turn down your brakes until it doesnt spin out.
edit:
http://www.youtube.com/watch?v=vFBytUOYTPQ thats some footage one of the guys at the track took (me practicing on sunday just passed with the 12x)