The could push more if they are allotted more tires to suit. The issue IMO is the fact that they basically have no such option right now. In a sense right now its no different than 2005 when they have 1 set of tire for entire race and they have to manage that and not go out and sprint. Except now too they HAVE to use their race set before the race since they are qualifying at least 3 times(if you are competitive), which uses up part of the finite tire life as well....Worse too, the tires also have to handle full fuel load for full race distance....
University of Toronto Formula SAE Alumni 2003-2007
Formula Student Championship 2003, 2005, 2006
www.fsae.utoronto.ca