When inspecting tires, which action is considered acceptable?

Listening for leaks is an acceptable action when inspecting tires because it allows you to detect hissing sounds that may indicate air escaping from a puncture or other damage. This audio cue can provide immediate insight into the condition of the tire and can help identify issues that may not be visible through visual inspection alone.

In contrast, the other actions lack sufficient thoroughness or effectiveness in ensuring tire safety. Pressing the tire on the ground could provide some information about the tire's firmness but does not specifically check for leaks or internal damage. Checking the tire pressure alone is important, but it does not encompass the full range of potential issues such as tread wear or sidewall damage. Relying solely on visual inspection means that you may miss problems that are not visible to the eye, such as a slow leak, making it an insufficient method of ensuring tire safety.