The difference between a run-flat tire and a regular tire is its internal structure and design goals. Run-flat tires are designed to reduce the risk of punctures caused by punctures by external objects or severe drops in tire pressure to provide greater safety and reliability. Ordinary tires, on the other hand, do not have this special design and only have the basic functions required for normal driving.
Specifically, the difference between run-flat tires and ordinary tires is mainly manifested in the following aspects:
1.Internal structure: Run-flat tires usually have a special material added to the inside of the tire, such as polyvinyl alcohol (PVA) fiber or a reinforcing fiber layer. The role of these materials is to quickly seal the damaged part of the tire when it is torn by external force or the tire pressure drops, thereby reducing the risk of air leaks and punctures.
2.Driving distance and speed limits: Due to the special structure of the run-flat tire, its ability to withstand external punctures or tire pressure drops is stronger than that of ordinary tires, so that the vehicle can continue to travel a certain distance without stopping immediately in the event of a special situation. However, run-flat tires do not support driving indefinitely, and vehicles still need to look for opportunities to repair or replace tires as soon as possible after a puncture.
3.Safety performance and reliability: Flat tires are designed to improve the safety and reliability of vehicles. In the event of a puncture or drop in tire pressure, the run-flat tire is able to continue driving and, in some cases, even maintain normal handling and stability, buying the driver time to deal with an emergency. However, regular tires may immediately lose air pressure when suffering from a similar situation, causing the vehicle to lose control.
It should be noted that although run-flat tires are safer than regular tires, they are not absolute. Therefore, when using a run-flat tire, it is still necessary to follow the normal tire pressure check and maintenance to ensure the normal operation of the tire. In addition, a run-flat tire is not a panacea and can still happen in extreme situations**, so in the event of a sudden drop in tire pressure or puncture, drivers should find a safe place to stop for inspection and repair as soon as possible.
To sum up, run-flat tires have higher safety and reliability than ordinary tires, and their special internal structure can reduce the risk of tearing or reducing tire pressure. However, using a run-flat tire doesn't mean you don't need to pay attention to tire pressure and tire maintenance, you still need to check your tire pressure regularly and keep it in proper driving condition.