A run-flat tire is a tire that is designed to continue to function even after it has lost air pressure. This type of tire is typically reinforced with a stiffer sidewall, which helps to support the weight of the vehicle and prevent the tire from coming off the rim. Run-flat tires are often used on vehicles that are equipped with a tire pressure monitoring system (TPMS), which can alert the driver to a loss of air pressure in a tire.
Run-flat tires offer a number of advantages over traditional tires. Firstly, they can help to prevent accidents by allowing drivers to continue to drive on a flat tire, even if they are far from a repair shop. Secondly, run-flat tires can help to extend the life of a tire, as they are less likely to be damaged by punctures or other road hazards. Finally, run-flat tires can improve fuel efficiency, as they have a lower rolling resistance than traditional tires.