What Causes a Tire Blowout on the Highway?

[EmilyMarie]

Here are the specific reasons for tire blowouts on highways: 1. Low tire pressure: When tire pressure is too low, the wheel's sinking amount increases, radial deformation increases, friction between the tire surface and the ground rises, rolling resistance increases, and the internal stress of the tire body also rises. This causes the tire body temperature to rise sharply, the tire surface rubber to soften, and the aging process to accelerate, leading to localized delamination of the tire body and increased wear on the tire surface. Under these conditions, if the car continues to drive at high speeds on the highway, the above reactions will accelerate, significantly increasing the likelihood of a tire blowout. 2. Overinflated tires: When tire pressure is too high, the tension on the tire body cords increases, accelerating the fatigue process of the cords. Especially when driving with overinflated tires, overloaded, and at excessive speeds, the internal stress on the cords increases further, the tire temperature rises rapidly, rubber aging speeds up, and fatigue strength decreases. This results in severe wear on the central part of the tire surface, sawtooth-like wear on the side tread patterns, and cord breakage, leading to a tire blowout. 3. Incorrect tire installation: Wheel imbalance. Due to uneven mass distribution across different parts of the wheel, when the wheel rotates, centrifugal force generates significant impact forces in the wheel's rotation plane, causing the wheel to bounce and sway. This increases tire wear speed and subjects the cord layers to periodic impact loads, reducing the fatigue resistance of the cords. Especially at speeds above 100 km/h, wear caused by wheel imbalance becomes extremely severe, ultimately leading to a tire blowout.

[VanAmelia]

I've experienced several high-speed tire blowouts, and it's no joke. The main reasons are tire aging or excessive wear, where the rubber can crack and leak; also, tire pressure being too low or too high can cause the tire to deform and overheat, leading to a blowout at high speeds. There are many foreign objects on highways, like nails or stones that can cut the tires, which is quite common. Driving too fast also increases pressure, especially in summer when the road surface is hot, making it even more dangerous. Before every long trip, I check the tire pressure and wear, and if I see any cracks, I replace the tires. In case of a blowout, hold the steering wheel steady and brake slowly, avoid sudden turns, and quickly pull over to place the warning triangle. Regular tire maintenance is crucial—don't skimp on costs or overlook it.