How far can a run-flat tire travel with low pressure?
3 Answers
Generally speaking, even when maintaining a speed of 80km/h with no tire pressure, the run-flat tire can still travel nearly 80 kilometers. Here is a related introduction to the advantages of run-flat tires: 1. Support and resilience: Run-flat tires have more support and resilience in the sidewalls compared to regular tires, so in the event of sudden air loss or a blowout, the rim and tire can work together to support the vehicle, reducing the danger. In contrast, if a regular tire experiences a sudden blowout or air loss, it relies solely on the rim to make contact with the ground, lacking the support of the tire, as regular tires tend to detach from the rim when they lose pressure. 2. No immediate air loss: Due to the unique construction of run-flat tires, they do not immediately lose all air when a blowout occurs, allowing the vehicle to continue driving for a certain distance even with air leakage. 3. Durability: Run-flat tires have reinforced sidewalls, which inherently enhances their durability, making them more long-lasting than regular tires.
As a long-time driver, I pay special attention to tire maintenance. The design of run-flat tires is truly ingenious—they allow you to drive a certain distance even when punctured, typically recommended around 80 kilometers, but not much more. This is because the internal structure of the tire has reinforced layers to support the vehicle, but they wear out quickly. When driving on a flat tire, you must slow down, keeping the speed below 50 km/h, and avoid sharp turns or sudden braking. Exceeding the recommended distance may cause the tire to be completely ruined or even compromise safety. I suggest pulling over immediately if you notice low tire pressure and checking the tire pressure monitoring light. Remember to check tire pressure monthly and maintain it within the correct range—don’t wait for a problem to arise. Car manufacturers state that this distance is just an emergency standard, and actual conditions depend on factors like road conditions, vehicle load, and speed. In short, safe driving comes first.
I always believe that safety comes first when driving, and the ability of run-flat tires to travel a longer distance at low pressure should be approached with caution. The general standard is within 50 miles or 80 kilometers, but you must understand that this is a temporary emergency measure, not a permanent solution. Once the tire pressure is abnormal, the wheel bears uneven force, and prolonged driving can cause the sidewall to deform, leading to the risk of a blowout. I recommend immediately slowing down to 50 km/h and avoiding the fast lane. Find the nearest repair shop for a replacement without delay. Also, check the tire pressure sensor in your car to ensure it's functioning properly. The distance may vary for different car models, so refer to the manual for confirmation. Remember, run-flat tires are essentially useless after driving at low pressure—don't save small money only to invite big trouble. Regular tire maintenance is key to avoiding sudden emergencies.
