The reasons of tire blowout were analyzed based on the increasing accidents of tire blowout phenomena. The concept and connotation of the run-flat technology were defined and the types of the run-flats were classified. The representative products and development status of run-flat system were introduced and the developing trends were predicted The necessity and feasibility of developing run-flat system for vehicles and adapting to the requirement of markets for run-flat based on the status of China were put forward and discussed.