The car appeared to contravene a rule which stated that moving aerodynamic devices were not allowed, but Brabham argued that the rules had been worded to ban devices whose primary function was aerodynamic.
O coche parecía contravir unha norma que establecía que os dispositivos aerodinámicos móbiles non estaban permitidos, pero Brabham argumentou que as regras foran redactadas para prohibir dispositivos cunha función aerodinámica.