In other words, it is a smaller tire used as a replacement tire. Due to its smaller physical shape, it takes up less space in the vehicle's trunk, making it space-efficient. However, the smaller size and lightweight construction put performing restrictions on the tire. It must be inflated at 60 psi throughout its performance, and even then, it cannot be driven faster than 50 mph. Due to this, this compact spare tire does not offer the same performance as a full-sized tire would. Yet it enables a short drive, so the vehicle and its passengers will not be stranded on the side of the road.