How many kilometers can a run-flat tire drive after losing air?
2 Answers
How many kilometers a run-flat tire can drive after losing air varies depending on the brand. Generally, it can travel approximately 80 kilometers at a speed not exceeding 80 km/h. It is important to note that the function of run-flat tires is not to allow the vehicle owner to continue driving when a problem occurs, but mainly to prevent the vehicle from losing control in the event of sudden tire pressure loss. The technical name for run-flat tires is 'tire pressure monitoring system tires.' After inflation, the tire sidewall is the main part supporting the vehicle's weight, composed of the outer tire, standard inner tube, spare inner tube, steel rim, gas generator (or air storage chamber), pressure sensor, and control unit.
I remember one time my car had run-flat tires installed, and suddenly got a flat while driving. At the time, I felt the car shaking a bit but it was still drivable. I drove extremely carefully, maintaining a speed of around 60 km/h, and managed to drive nearly 60 kilometers before finding a repair shop. These tires are designed to be very sturdy with reinforced sidewalls, allowing them to keep going for a distance even when deflated. Most brands can last between 50 to 150 kilometers, but I recommend not driving too far—it's best not to exceed 80 kilometers, and keep the speed under 80 km/h. Otherwise, the wheel rims could get damaged or you might lose control. Now, I always check the tire pressure before driving to avoid emergencies. If you get a flat, it's safer to pull over as soon as possible and call for help rather than waiting for bigger problems. During regular maintenance, ask the technician about the condition of your tires to prevent issues before they arise.
