How Far Can a Run-Flat Tire Drive Without Air Pressure?
2 Answers
Run-flat tires can still drive about 80 kilometers without air. The main purpose of run-flat tires is to prevent the vehicle from losing control in the event of sudden tire pressure loss. Here is some relevant information about run-flat tires: 1. Introduction to Run-Flat Tires: Run-flat tires are technically called "tire pressure monitoring system tires." 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." 2. The Difference Between Run-Flat Tires and Regular Tires: The sidewall of a run-flat tire is very thick, and the sidewall of an inflated tire is the main part that supports the weight of the vehicle. 3. The Structure of Run-Flat Tires: Run-flat tires consist of an outer tire, a common inner tube, a spare inner tube, a steel rim, a gas generator, a pressure sensor, and a control unit. Run-flat tires have special symbols after the specifications on the tire sidewall, which regular tires do not have.
I think run-flat tires can still be driven for a distance after a puncture because their sidewalls are specially thickened and reinforced, like adding a buffer layer, which can support the vehicle's weight when deflated. Generally, if the speed is kept relatively slow, such as below 80 kilometers per hour, they can run about 50 to 80 kilometers, depending on the car model and road conditions. I've heard some brands claim up to 100 kilometers, but don't take that too seriously. The sooner you repair it after a puncture, the better. Driving too far can easily damage the wheel and increase the risk of a rollover. So it's best to drive to the nearest repair station for inspection, without speeding or delaying too long. Remember, this is just a temporary emergency measure—don't assume everything is fine. If you feel something wrong while driving, pull over immediately.
