What are the differences between run-flat tires and ordinary tires?
2 Answers
The specific differences between run-flat tires and ordinary tires are as follows: Structure: The sidewalls of run-flat tires are thicker than those of ordinary tires, designed to support the vehicle's weight after a loss of tire pressure; Comfort: Run-flat tires are less comfortable than ordinary tires due to their stiffer sidewalls, which results in relatively poorer shock absorption; Noise: Run-flat tires produce more noise than ordinary tires; Price: Run-flat tires are more expensive than ordinary tires, typically costing several times more. Replacing all four tires with run-flat tires can be very costly. Additionally, run-flat tires come equipped with a tire pressure monitoring system to detect blowouts, and these tire pressure sensors are also very expensive, contributing to the higher price of run-flat tires; Lifespan: Due to their thicker sidewalls, run-flat tires are more resistant to punctures and generally have a longer lifespan than ordinary tires. Run-flat tires are technically called "tires with extended mobility" and are not immune to blowouts. However, they can still support the vehicle's weight and allow driving at a reasonable speed even when the tire loses pressure. The principle behind them is the addition of a thick layer of natural rubber to the tire's sidewall, significantly increasing the sidewall's rigidity. This allows the tire to support the vehicle even without internal air pressure. Although run-flat tires can prevent loss of control during a blowout, they also have many drawbacks, such as reduced comfort, high cost, and difficulty in repair. It is particularly important to note: While run-flat tires can support the vehicle for a certain distance in a deflated state, this still causes significant damage to the tire. If driven too far in this condition, the tire will still be ruined. Therefore, even with run-flat tires, it is essential to repair leaks promptly and not assume that extended mobility means complete peace of mind.
I've always believed the biggest advantage of run-flat tires is safety. Years of driving have made me realize how crucial it is to keep driving when there's a puncture. Regular tires go flat immediately when punctured, forcing you to change the spare tire on the roadside, which can be very dangerous on highways. Run-flat tires have reinforced sidewalls that can support the vehicle's weight even when deflated, allowing you to drive tens of kilometers to find a repair shop and avoid accidents. However, their drawbacks can't be ignored – they're stiff and noisy, making long-distance driving less comfortable. Additionally, replacing run-flat tires is significantly more expensive than regular tires, costing hundreds more for a set, while regular tires are cheaper and offer better comfort. Overall, if safety is your top priority, especially for frequent highway driving, run-flat tires are worth considering. Otherwise, regular tires are more suitable for everyday use.
