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What is the function of run-flat tires?

2 Answers

LeCassidy

07/29/25 4:06am

Function of run-flat tires: After a tire blowout accident occurs, it allows the vehicle to continue driving at a speed not exceeding 80 kilometers per hour for up to 80 kilometers. The technical name for run-flat tires is "puncture-resistant tires," marked with RSC. Generally, the sidewall of run-flat tires will have the RSC mark. The run-flat feature of these tires lies in their thicker sidewalls. Even when an RSC tire suddenly loses pressure, it can still support the vehicle's movement due to its thicker sidewall, preventing the steering wheel from losing control due to a blowout. A blowout is undoubtedly a fatal blow to a high-speed vehicle. If the speed exceeds 120 km/h, the survival probability of the occupants is extremely low. Therefore, safe driving is the prerequisite for road safety.

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OBlakely

08/12/25 3:54pm

When driving on the road, I particularly trust run-flat tires—they can truly save lives. Simply put, when a tire suddenly bursts or leaks, run-flat tires don’t go flat instantly like regular tires. Instead, their reinforced sidewalls support the vehicle’s weight, allowing me to drive steadily for about 50 to 100 kilometers. This is crucial—for example, if you experience a blowout on the highway, stopping in a curve or a remote area could be dangerous if another vehicle comes speeding by. Thanks to run-flat tires, I can slowly drive to a repair shop or a safe zone without panicking and calling for a tow. They not only reduce the risk of losing control during an accident but also eliminate the hassle of carrying a spare tire. However, it’s important to remember that this feature isn’t foolproof—wear on the sidewalls shortens their lifespan, and you must replace the tire immediately after driving those few dozen kilometers. Regular tire pressure checks are also essential, ideally paired with a tire pressure monitoring system. In summary, the core benefit of run-flat tires is this: they buy me critical time during tire failures, prioritizing personal safety. Every time I think about it, I feel reassured.

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