A sidewall bulge arises when the internal structure of a tire weakens, allowing air pressure to push outward against the tire’s outer layer. This deformation appears as a raised area, often circular or oval, on the sidewall. Consider a tire striking a pothole: the impact can sever the internal cords that maintain the tire’s shape, creating a zone of vulnerability.
Understanding the genesis of this tire defect is crucial for vehicle safety and performance. A compromised tire is at a significantly increased risk of sudden failure, potentially leading to loss of control and accidents. Recognizing the potential for such damage following impacts or exposure to road hazards enables proactive tire maintenance and timely replacements, minimizing risk and maximizing tire lifespan.