Commercial Driver's License (General Knowledge) › Fires
Which of the following is the most common cause of tire fires?
Tires that are insufficiently inflated
Tires that are over-inflated
Tires that are made with a deficient grade of rubber
None of these
Under-inflated tires are the single most common cause of tire fires, especially for heavy and commercial vehicles. Over-inflated tires, while posing obvious safety concerns, do not pose as great a risk for fires specifically as do under inflated tires.