A large, devoted, legion of fans is an important factor in the success of V8 Supercar racing today. The rules under which all cars compete are strictly set and governed to achieve what is known as parity between the rival teams. Parity rules state that all cars must race on identical tyres, use 5-litre engines and aero spoilers of a specific shape and dimension. Working within these rules, a team can still gain an advantage by application of a magical combination of tyre pressures, shock absorber settings and spring stiffness. Teams must leave no stone unturned in the quest for an edge over their rivals since fractions make a difference. This is why there is more to racing than just on the track. team face racing which is close and furious, usually only 1 second is the separator between winning and coming 25th.