How Often Should Run-Flat Tires Be Replaced?

[DiLevi]

Run-flat tires generally need to be replaced after approximately 5 years or 80,000 kilometers. The technical name for run-flat tires is "Tire Pressure Monitoring System", abbreviated as RSC. The sidewall of an inflated tire is the main part that supports the weight of the vehicle, especially for tires with a larger aspect ratio (the ratio of tire height to width), where the sidewall is very "thick". Run-flat tires are composed of the outer tire, standard inner tube, spare inner tube, steel rim, gas generator (or air storage chamber), pressure sensor, and control unit. RSC includes RSC tires mounted on EH2 rims and the TPI electronic warning system. Once the tire pressure begins to drop, RSC immediately alerts the driver. However, even if the tire pressure drops to zero, RSC can still ensure the tire remains securely fixed to the rim, allowing the vehicle to continue driving for a certain distance.