What Causes Tire Bulging?
1 Answers
The root cause of tire bulging is the fracture of the tire sidewall's cord ply, which leads to the formation of an air pressure bulge at the fracture point under the high-pressure gas inside the tire, protruding the tire surface and forming a noticeable bulge. Once a tire bulges, it must be replaced with a new one; otherwise, there is a high risk of a blowout. Here are the reasons that can cause the cord ply of a tire to fracture: 1. Impact or compression at the bulging area of the tire: The most common scenario is when a car hits a curb at a relatively high speed or at an inappropriate angle. In such cases, there are usually signs of impact, such as surface scratches or white impact marks inside the tire at the bulging area. Careful inspection will reveal subtle differences. 2. Quality issues with the tire: One possibility is that the cord wires inside the tire have quality problems, leading to insufficient local strength. Another situation is poor handling at the cord ply joints. In cases of bulging caused by quality issues, there are no marks on the tire surface or inside the tire at the bulging area. 3. Insufficient structural strength of low-cost tires: The tire market is highly competitive. To reduce costs, low-cost tires may reduce the number of cord or nylon layers or use inferior cord plies, compromising the tire's strength. Even minor impacts can cause bulging.
