Small cuts are tyrants. A shard can enter the tread with so little drama that the wheel keeps turning, while water, grit, and flexing work through the opening toward the belt package and casing; what begins as a pinprick becomes a stress concentration, not a roadside spectacle.
The real hazard is delay. Unlike a loud impact, a slow puncture can lower inflation pressure without declaring itself, and the resulting underinflation enlarges the contact patch, raises sidewall deflection, and builds heat in the carcass plies. Heat is a patient vandal. With each rotation, cyclic strain encourages fatigue crack growth; moisture can corrode steel cords, weakening a structure designed for specified pressure, not sustained travel on a compromised tire.
Inspection is not paranoia. It is the cheap argument against an expensive surprise. Drivers should check pressure when tires are cold, inspect tread cuts after rough-road travel, and seek professional assessment when a puncture reaches the shoulder, produces a bulge, or exposes cords, because a plug cannot restore every injured casing. Replacement is sometimes the sober choice after low-pressure running damages the sidewall internally. Rarely does a tire announce its private injury. It simply carries the road's small knife until, at speed, the silence becomes the story.