Eight Tire Hazards: Safety Guide

As the only part of a car that comes into contact with the road, the safety of the tire directly impacts driving safety. However, many car owners lack sufficient awareness of potential tire hazards, often waiting until an accident occurs before regrets are too late.

Tire Bulge: A Hidden "Time Bomb"

A tire bulge is essentially a localized expansion of the rubber due to air pressure after the internal tire cord breaks. This damage is irreversible. The tire cord acts as the tire's "skeleton," distributing pressure and maintaining its shape. Once broken, the rubber layer loses its support, and like a punctured balloon, it can burst at any time due to excessive air pressure.

At high speeds, a bulging tire can easily cause loss of control, leading to serious accidents such as rear-end collisions and rollovers. Data shows that nearly 30% of traffic accidents on highways are related to tire bulges. Drivers should be vigilant and avoid driving over curbs and hitting potholes. If a bulge is detected on a tire, regardless of size, it must be replaced immediately. Never try to make do with it.

Slick Tires: The Invisible Killer of Rainy Day Driving

When tire tread wears below the 1.6mm wear limit, they become known as "slick tires." The primary function of tread is to drain water and enhance grip. Especially in rainy conditions, the tread quickly removes accumulated water between the tire and the road, ensuring effective contact.

However, slick tires significantly reduce their drainage performance, preventing accumulated water from being removed promptly. This creates a film of water between the tire and the road, leading to "hydroplaning."

At this point, the tire loses grip, making it feel like driving on ice. Braking distances are significantly increased, and steering becomes sluggish. Experiments have shown that at 60 km/h in rainy conditions, slick tires can reach 5-8 meters longer braking distances than tires with normal treads. These few meters can mean the difference between an accident and safety. Therefore, drivers should regularly check their tire tread depth and replace them immediately if they reach the wear limit.

Tire Aging: A Safety Hazard Caused by Time

Tires are made of rubber. Prolonged exposure to sunlight, oxygen, and high temperatures will gradually age, manifesting as cracks on the tread, hardening or softening of the rubber, and dulling of the color. Aging tires experience a significant decrease in rubber elasticity, which not only affects driving comfort but also significantly reduces grip. During emergency braking or cornering, aged tires lack sufficient friction and are prone to slipping.

Particularly in hot summer weather, high temperatures accelerate rubber aging, making tires more fragile and significantly increasing the risk of blowouts. Generally, tires have a service life of 5-6 years. Even with low mileage, it is recommended to have them professionally inspected and replaced as necessary after this period to prevent accidents caused by aging.

Tread Deformation: A Destroyer of Driving Stability

Tread deformation is typically caused by damage to the tire's internal structure after a strong external force has been applied. For example, driving over a deep pothole at high speed or experiencing a severe collision can damage components such as the tire cord and rubber layer, leading to tread deformation. When a tire's tread is deformed, the vehicle will experience noticeable shaking, jerking, and even veering, seriously affecting driving stability.

Continuing to use a deformed tire will not only increase tire wear but may also damage the vehicle's suspension and steering systems, increasing the risk of an accident. Therefore, if you notice any abnormal driving, you should immediately visit a professional tire shop for inspection. If tread deformation is confirmed, the tire should be replaced promptly.

Severely Damaged Shoulder or Sidewall: The "Hard Rule" of Replacing Instead of Repairing

The shoulder and sidewall are areas of tire wear most frequently during daily use and are also relatively vulnerable to structural damage. The sidewall is thinner and, without the protection of a steel wire layer, is susceptible to damage from scratches or impacts, potentially exposing the inner tube and wire.

The shoulder, as the junction between the tread and sidewall, is where stress is most concentrated in the tire. It experiences significant deformation and high temperatures during driving, making it difficult for the patch to securely bond to the inner tire. Even if repaired, it can easily become detached at high speeds, causing a blowout. Therefore, if the shoulder or sidewall of a tire is severely damaged, such as visible cracks, missing rubber, or exposed inner tube, the tire must be replaced and must not be used after repair.

Multiple Repairs: A "Weak Point" with Compounding Hidden Dangers

The maximum number of times a tire can be repaired varies between brands, but generally speaking, multiple repairs can seriously impact tire safety. Each repair compromises the tire's uniformity. Although dynamic balancing is performed after the repair, the repaired area remains a weak point. As the number of repairs increases, the tire's strength and balance performance gradually decrease.

If a tire has been repaired more than three times, the safety risks increase significantly. If it has been repaired more than five times, the tire's structural stability no longer meets driving requirements. During extended driving or high-speed driving, the repaired area can easily fail due to pressure. Therefore, it is recommended that tires that have been repaired be replaced promptly, especially for vehicles that frequently use highways. Never risk driving safety.

Broken Wire Tires: "Dangerous Goods" Without Support

The carcass of a radial tire is constructed from multiple layers of cross-linked polymer material, topped with several layers of steel-belted cord fabric woven from steel wire. This cord fabric effectively strengthens the tire and reduces the risk of punctures. If a tire is severely impacted or punctured by a sharp object, the inner steel cord fabric becomes damaged or exposed, causing the tire to lose support and stability.

Broken wire tires cannot withstand normal pressure and friction during driving, making them prone to tread collapse and blowouts. Furthermore, exposed steel wire can cut through the rubber layer inside the tire, further damaging it. Therefore, any tire with a broken wire, regardless of the severity of the damage, must be replaced immediately and should not be used.

Deflated, Run-over Tires: "Useless" Tires with Structural Damage

Driving tires deflated for extended periods of time will cause excessive friction between the sidewall and the road, resulting in visible run-over marks. The inner air barrier may also blister. Driving with a flat tire can completely damage the tire's internal ply and structure, making it impossible to restore normal performance even after inflation.

At this point, the tire becomes like "paper," its strength significantly reduced. It cannot withstand normal driving pressure, and is prone to blowouts when re-inflated. Therefore, drivers should regularly check tire pressure. If a tire is found to be deflated, it should be inflated immediately. If signs of deflation are already visible, it is not worth repairing and should be replaced immediately, regardless of whether the tire appears intact.

In short, the safety of tires is crucial to the lives of every driver and passenger. Drivers should develop the habit of regularly checking their tires to promptly identify and eliminate any potential safety hazards. If a tire exhibits any of the eight problems listed above, do not take chances and replace it with a qualified tire promptly to ensure a safe and reliable driving experience.