If bubbles are present on the tires during a pre-trip inspection, the appropriate action is to replace the tire immediately. Bubbles can indicate a significant issue, such as a separation in the tire's layers or an impending blowout. This condition poses a severe safety risk both to the driver and others on the road, as it can lead to a sudden loss of tire integrity while driving, potentially causing accidents or further damage.
Taking immediate action to replace the tire ensures that the vehicle is safe for operation and maintains the integrity of the overall transportation system. It is crucial for drivers to recognize that any deformity or abnormality in a tire, such as bubbles, warrants prompt attention and resolution before proceeding with any driving. Other options, such as documenting or monitoring the situation or simply checking the air pressure, do not adequately address the urgent safety concern posed by a compromised tire.