Which visual indicators may suggest a leak in the brake system?

The presence of spots of fluid under the vehicle or a warning light on the dashboard are significant visual indicators that may suggest a leak in the brake system. When brake fluid leaks, it typically creates puddles or spots on the ground beneath the vehicle, which can be identified as clear to yellowish liquid, depending on the brake fluid type. Additionally, a warning light illuminating on the dashboard is an important indicator that signals malfunctions within the brake system, including low brake fluid levels due to a leak. Recognizing these signs is crucial for vehicle safety, as any brake system failure greatly impacts the ability to stop effectively.

In contrast, brightly colored tires do not provide any information about the brake system's condition, rust on the brake pads indicates wear but not necessarily a leak, and the notion that no indicators are reliable for leaks contradicts common maintenance practices and observations in vehicle inspection.