Selected applications, based on vehicle and the run-flat tire design, can range from just 25 miles up to 200 miles. Run-flat tires cannot be driven faster than 50 miles per hour and typically offer up to 50 miles of extended mobility. Note that a run-flat tire's endurance is dependent on operating conditions such as the flat tire's position on the vehicle, vehicle load, ambient temperature, driving speed and distance traveled. Illumination of the TPMS warning light identifies that at least one tire is losing/has lost air and establishes the beginning of the extended mobility range the driver can carefully continue driving to escape inclement weather, unsafe surroundings or insufficient visibility, etc.
However, even run-flat tires will fail if driven too fast, too far or too heavily loaded when flat.įor this reason, run-flat tires may only be used on vehicles equipped with a Tire Pressure Monitoring System (TPMS) that alerts the driver if one or more tires have lost 25% of their recommended inflation pressure. Run-flat tires offer drivers temporary extended mobility even after a puncture allows complete air pressure loss.
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