Question

What are heat checks and hard spots caused by?

A) Excessive brake fluid
B) Uneven brake lining material
C) Inadequate brake cooling
D) Over-tightened lug nuts

Answer 1

Heat checks and hard spots in brake systems are caused by uneven brake lining material.

Step-by-step explanation:

Heat checks and hard spots in brake systems are caused by uneven brake lining material. When the brake lining material is not evenly distributed, certain areas of the brake disc or drum experience more friction and heat than others, leading to the formation of heat checks and hard spots.