What can excessive moisture in the air tanks lead to?

Excessive moisture in the air tanks can lead to corrosion and possible brake failure because water in the air brake system can cause rust and deterioration of metal components. Air brake systems rely on dry air to function effectively; when moisture is present, it can adversely affect the system by creating rust in the air lines and components. This rust can lead to blockages and leaks, reducing the system's efficiency and reliability. In severe cases, brake components can fail altogether, posing a serious safety risk when operating the vehicle.

In contrast, improved braking efficiency, decreased vehicle weight, and enhanced tire performance do not correlate with the effects of moisture in the air brake system and thus are not significant consequences of having too much moisture in the air tanks. Understanding the importance of maintaining air quality in the braking system is crucial for ensuring the safe operation of vehicles equipped with air brakes.