What condition should the sidewalls of tires be in during a pre-trip inspection?

The condition of the tire sidewalls is critical for safety and performance, making it essential to check them meticulously during a pre-trip inspection. For the sidewalls, they must exhibit no cuts, cracks, splits, or bubbles, and there should be no tread separation. Any such defects indicate significant risks, including potential tire failure while driving, which could lead to loss of vehicle control and unsafe driving conditions.

Inspecting for cuts, cracks, splits, and bubbles ensures that the integrity of the tire is intact and that it can withstand the pressures of driving. Tread separation can lead to dangerous situations as it affects traction and control, especially in adverse road conditions. Maintaining tires in this optimal condition is crucial for both the safety of the driver and that of others on the road, highlighting why this choice is the correct approach during a pre-trip tire inspection. Other options that accept visible wear, moderate cracking, or superficial abrasions fail to recognize the potential hazards posed by these conditions.