According to regulations, what defines a defective tire?

A defective tire is defined by certain criteria that focus primarily on safety and functionality. In this case, the correct choice pertains to any cuts or snags longer than 2.5 cm. Such damage can significantly compromise the structural integrity of the tire, leading to potential blowouts or loss of traction, both of which pose serious safety risks while driving, especially in commercial vehicles that often carry heavy loads.

Tires are crucial for maintaining grip on the road, and any serious damage can result in instability or failure during operation. It's essential to regularly check for cuts and snags, as these defects can progressively worsen and lead to more significant issues. Maintaining tires in optimal condition is essential for safe vehicle operation and compliance with regulations set by vehicle safety authorities.

The other options, while related to tire condition, do not define a defective tire as comprehensively. For example, the tread depth is indeed important, but the specific threshold of 1.6 mm may be a consideration for general tire wear rather than a direct characterization of defectiveness in the context of immediate safety hazards. Similarly, tire color and excessively worn sidewalls may indicate tire condition issues, but they do not relate as specifically to the immediate dangers of cuts or snags that can lead to tire