What is the permanent condition caused by the brakes overheating on numerous occasions?

Prepare for the City of Miami Fire Department Driver-Engineer Exam. Review multiple choice questions with hints and explanations. Succeed on your test!

Multiple Choice

What is the permanent condition caused by the brakes overheating on numerous occasions?

Explanation:
When brakes overheat repeatedly, the friction material on the pads can become glazed. This creates a hard, smooth, glassy layer on the pad surface that dramatically reduces friction during braking. Because this glaze sticks to the pad and doesn’t disappear with cooling, it becomes a permanent-type condition until the pads (and often the rotors) are replaced or resurfaced. This is different from brake fade, which is a temporary loss of braking power during a heavy stop, and from rotor warping, which is a physical deformation of the disk. The glaze caused by repeated overheating best fits the idea of a lasting surface condition resulting from heat.

When brakes overheat repeatedly, the friction material on the pads can become glazed. This creates a hard, smooth, glassy layer on the pad surface that dramatically reduces friction during braking. Because this glaze sticks to the pad and doesn’t disappear with cooling, it becomes a permanent-type condition until the pads (and often the rotors) are replaced or resurfaced. This is different from brake fade, which is a temporary loss of braking power during a heavy stop, and from rotor warping, which is a physical deformation of the disk. The glaze caused by repeated overheating best fits the idea of a lasting surface condition resulting from heat.

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