What is an important consideration when checking brake adjustments?

Checking brake adjustments is critical for ensuring the safety and effectiveness of a vehicle's braking system. A physical check of the brakes at each wheel allows the driver or mechanic to assess the condition of brake components, such as the brake pads, shoes, and drums. This inspection is essential to verify that the brakes are functioning properly and are not worn down or misadjusted, which could lead to reduced braking performance and increased stopping distances.

Other options, while they may pertain to vehicle maintenance or safety, do not directly address the necessity of ensuring proper brake functionality. For instance, the frequency of tire changes generally relates to tire wear rather than brake performance, and visual inspection of brake lights, while important for signaling and safety, does not affect how the brakes operate. Similarly, adjusting side mirrors is crucial for visibility but does not impact the actual performance of the braking system. Thus, a thorough physical check of the brakes at each wheel stands out as the most pertinent consideration for maintaining optimal braking performance.