What Causes High-Speed Tire Blowouts?

[MilaLynn]

Here are the specific reasons for tire blowouts on highways: 1. Insufficient Tire Pressure: When tire pressure is too low, the wheel's sinking amount increases, radial deformation enlarges, friction between the tire surface and the ground intensifies, rolling resistance rises, and the tire body's internal stress also increases. This leads to a sharp rise in tire temperature, softening of the tread rubber, accelerated aging, and localized delamination of the tire body along with increased tread wear. Under these conditions, if the vehicle continues to drive at high speeds on the highway, these reactions accelerate, significantly increasing the likelihood of a tire blowout. 2. Overinflated Tires: Excessive tire pressure increases the tension in the tire body's cord layers, accelerating the fatigue process of the cords. Especially when driving with overinflated tires while also overloaded and speeding, the internal stress on the cords further increases, rapidly raising tire temperature and speeding up rubber aging, which reduces fatigue strength. This results in severe wear at the center of the tread and sawtooth-like wear on the sidewall patterns, cord layer breakage, and other phenomena, ultimately leading to a blowout. 3. Incorrect Tire Installation: Wheel Imbalance. Due to uneven mass distribution around the wheel, when the wheel rotates, centrifugal force generates significant impact forces in the wheel's rotational plane, causing the wheel to bounce and sway. This accelerates tire wear and subjects the cord layers to periodic impact loads, reducing the cords' fatigue resistance. Particularly at speeds above 100 km/h, the wear caused by wheel imbalance becomes extremely severe, eventually leading to a tire blowout.