What is the structural principle of run-flat tires for explosion prevention?

[RicardoDella]

Run-flat tire structural explosion prevention principle: The reason why RSC run-flat tires do not collapse after air leakage is mainly due to the thickened rubber sidewalls. Even when air pressure is lost, the sidewalls can still support the vehicle's weight without causing severe deformation. Below is an introduction to RSC: 1. To prevent the tire from detaching from the rim after deformation, the rim is specially designed with protrusions that prevent the tire from coming off after a sudden pressure drop. Vehicles equipped with run-flat tires may not alert the driver to minor air leaks, so RSC also includes a TPI electronic warning system installed on the rim. Once tire pressure begins to drop, RSC immediately alerts the driver. 2. The design principle of RSC run-flat tires relies on sturdy sidewalls to provide support. Another design for run-flat tires involves installing a device called a fixed ring inside the tire. This fixed ring supports the tire from the inside, preventing it from being crushed and also stopping the tire from detaching from the tire bead.

[DeBeckett]

The design of run-flat tires is quite ingenious, with the key being the reinforced sidewalls. I've tried them a few times, and structurally, they use thickened special rubber material, making the sidewalls much harder than regular tires. The principle is that when the tire gets punctured and loses air pressure, this reinforced part can immediately support the vehicle's weight, preventing the wheel from collapsing. This allows you to continue driving for another 50-60 kilometers safely to reach a repair shop. The advantage is reducing the risk of unexpected stops on highways, which I find particularly practical, as it eliminates the need to carry a spare tire and saves space. However, the ride can be a bit more jarring due to the stiffer sidewalls, affecting comfort. Advances in material science have made this rubber capable of withstanding high temperatures and pressures, but daily maintenance requires checking tire pressure and not ignoring small leaks. Overall, it's based on the principle of material reinforcement, allowing the car to drive even at zero pressure.

[Julia]

The principle of run-flat tires is quite simple—their reinforced sidewalls act like an invisible skeleton. Structurally, they feature extra-thick rubber layers or internal support rings that can bear the weight of the entire vehicle when air is lost. I once experienced a tire blowout, and these tires allowed me to calmly drive to a repair shop, avoiding danger. The core lies in their design, which prioritizes load-bearing capacity and durability, offering more direct road feedback but with slightly harsher vibrations. The benefits include enhanced safety, making them ideal for long trips or emergencies. The downsides are higher costs and potentially increased fuel consumption due to greater rolling resistance. Originally developed for military use, they are now common in passenger cars, reducing the hassle of roadside tire changes. Maintenance involves regular pressure checks to ensure the reinforced sections aren’t worn out. Essentially, their principle relies on physical support to prevent collapse.

[SanColton]

Run-flat tires feature a unique structure with reinforced sidewalls being the key. The principle is that when air leaks, the hardened rubber supports the wheel for normal rolling. I have these tires on my car, and while the ride is a bit bumpy, they're safe and reliable. They can travel dozens of kilometers at zero pressure thanks to this reinforced design. Benefits include avoiding sudden stops after a blowout, offering great convenience. The special materials are highly durable, and the structure is essentially a mechanical support system.