Which maintenance task is critical for maximizing tire lifespan?

Regularly rotating the tires is essential for maximizing their lifespan because it helps ensure even tread wear across all tires. When tires are subjected to different loads and wear patterns due to their positions on the vehicle, one or more tires can wear out faster than others. By rotating the tires, you can balance this wear and prolong the overall life of the tires, enhancing performance and safety.

In contrast, changing brake fluid, checking engine oil levels, and replacing air filters, while important for maintaining overall vehicle health, do not directly impact the wear and lifespan of the tires. Brake fluid is crucial for the braking system's effectiveness, engine oil affects engine performance, and air filters help maintain proper engine function. However, none of these tasks contribute specifically to the condition and longevity of the tires themselves. Therefore, regular tire rotation stands out as the most effective maintenance task for extending tire life.