How many kilometers can a run-flat tire drive after losing air?
4 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.
As an average car owner, I think experiencing a flat run-flat tire is quite common. My car has had it happen several times, and each time I could still drive for about 50 to 80 kilometers, as long as I kept the speed under control and didn't exceed 70 km/h. The key is to hold the steering wheel steady and avoid overly bumpy roads, otherwise, the sidewall wear will worsen. Eventually, I drove to a repair shop or dealership to replace the tire. I regularly check tire pressure using a mobile app for reminders, and once there's a leak, the warning light comes on. Don't push it too far to avoid damaging the rims and suspension system. I recommend carrying a portable air pump for emergencies, especially for long trips, since safety always comes first.
From a safety perspective, while run-flat tires can still be driven for a distance after losing air, it's not advisable to take risks for too long. My habit is to immediately slow down and pull over—never drive more than 50 kilometers, and keep the speed below 80 km/h, as overheating the sidewall could lead to a more dangerous blowout. I've consulted professional advice: tires can endure 50 to 150 kilometers depending on road conditions, but it's wiser to address the issue sooner. Driving too far risks wheel rim deformation, leading to costly repairs that outweigh the benefits. Cultivate the habit of regularly checking tire pressure to nip problems in the bud.
