Exam 7: Tire and Wheel Diagnosis and Service

Tires can be balanced by the __________ method.

Technician A says that as long as a lug nut threads onto the wheel stud, it can be used on any type of wheel. Technician B says that it's critical that both wheel and hub (or flange) mounting surface be clean and free of dirt and mud. Who is correct?

________ is when the yellow dot is matched up with the rim's heaviest point.

When inspecting tires installed on the car, you should check for all of the following, EXCEPT:

Technician A says the appearance of tire wear indicator bars indicate that tire pressure is low and therefore pressure should be increased. Technician B says tire indicator bars are a quick visual warning that tire tread is worn down to the unserviceable level and the tires should be replaced. Who is correct?

A young technician often breaks off the first one or two wheel studs on the first wheel he or she is removing on a new project vehicle. Technician A says to first spray all of the lug nuts with penetrating liquid. Technician B says to be sure the impact wrench is set for the correct rotation (e.g., counter-clockwise). Who is correct?

The tire must be an exact fit on the wheel to:

Which of the following four-tire rotation patterns is not commonly specified?

The ________ on the tire changer can hold the rim by grasping it from the outside or the inside.

The ______ is inspected to ensure that it is above the built-in wear indicators, which indicate that the tire is at the end of its legal life and should be replaced.

Manufactures recommend that tires are rotated at:

________ wear is when the ribs in the middle of the tire wear faster than those on each side.

________ occurs when a spot on either the inside or the outside of the tire's centerline is heavy.

Paying close attention to the wheels and tires can also assist in identifying problems with other vehicle systems, particularly in ________ and ________ systems.

A relatively good way to test for an air leak in a tire and wheel assembly is to:

All of the following statements about rotating tires is true; EXCEPT:

________ is most commonly a result of the tires set with excessive toe-in or toe-out.

Rust can often cause the wheel to become stuck to the axle flange or hub due to the snug fit between the wheel and hub (or axle flange). When this happens, Technician A says to first notify your supervisor and seek assistance. Technician B says to first use an oxyacetylene torch to loosen the rust's grip on the parts. Who is correct?

________ wear indicates that the vehicle has been driven with the tires consistently underinflated, or the driver regularly corners the vehicle at excessive speeds.

Tires on many vehicles are inflated to about ________ pounds per square inch (psi).