It features a strong internal structure that is able to withstand the weight of the vehicle and its passengers, once air pressure loss occurs. In other words, the tire manages to perform for 50 miles up to 50 mph in case of air pressure loss. This enables the tire's limited, temporary performance, preventing the vehicle from being stranded on the side of the road. Run flat tires should not be mounted on the same vehicle as regular tires, due to their heavier construction.