After a rejected t/o with steel brakes you really do not want to set parking brakes if it can be avoided.I once had to recover an A300-600 that had a rejected t/o and the brakes were welded on. We did not have enough brake units so we could not clear the aircraft from the runway.The result was a runway closed for hours until we flew some brakes in - fortunately another runway was available. Just to compound the problem we did not have 8 wheels either!