Tire, Wheel, and Wheel Bearing Diagnosis

Recall the listed symptom that indicates a problem with wheel bearings. Which sign directly points to wheel bearing issues?

• A soft brake pedal during stops

• Vibrations or unusual tread wear appearing

• Headlights dimming at idle

• Coolant temperature rising unexpectedly

A vehicle exhibits a rhythmic thumping noise while driving and shows vibration along with unusual tread wear. Based on these observations, what is the most likely underlying cause?

• Low brake fluid causing caliper chatter

• Insufficient grease leading to wheel bearing failure

• Misaligned steering rack producing resonance

• Underinflated tires creating sidewall slap

According to the passage, what is meant by tire impact damage, sometimes called road damage?

• Damage from normal tread wear over time

• Any harm to a tire caused by debris on the road, such as cuts or tears

• Cosmetic scuffs that do not affect tire function

• Only damage caused by collisions with other vehicles

Recall the definition: In this lesson, a tire wear pattern is described as the area on a tire that is being worn down. Which statement best explains abnormal wear?

• Abnormal wear is when all parts of the tire wear down at the same rate.

• Abnormal wear means some parts of the tire wear down more than other parts.

• Abnormal wear refers only to cosmetic discoloration on the tire surface.

• Abnormal wear occurs only after a tire has been patched or repaired.

Apply the concept to a scenario: A vehicle shows uneven tread depth across tires after several months of driving. Based on the text, which maintenance issue is a likely contributor to this irregular wear?

• Overinflation during cold weather

• Using a mismatched spare briefly

• Lack of tire rotation

• Cleaning the tires with harsh chemicals

Which statement correctly matches a tire inflation issue with its typical tread wear pattern?

• Underinflation typically wears the center of the tread more quickly.

• Overinflation generally causes extra wear on the outer edges (sides) of the tread.

• Underinflation usually produces uneven tread wear on the sides of the tire.

• Proper inflation consistently leads to rapid wear on both the center and sides.

A driver notices strong vibration in the steering wheel at highway speeds. Based on common causes of tire vibration, which issue is most likely and where should the driver check first?

• Overinflated rear tires; inspect the back tires

• Unbalanced front tires; inspect the front tires

• Bent rear rim; inspect the front tires

• Properly inflated tires; no inspection needed

Which factor is most commonly linked to wheel bearing noise according to the instructional text?

• Abnormal tread wear on the tire

• Ply separation within the tire

• Lack of lubrication in the bearing

• Overinflated tire pressure

According to the description, what is the primary purpose of a wheel cover on a vehicle wheel? Choose the best answer.

• To expose the lug nuts and dust cap for quick inspection

• To press over the wheel to hide the lug nuts, dust cap, and other parts

• To permanently attach the tire to the rim

• To replace damaged lug nuts with a protective shell

Which statement best explains why regular tire maintenance is emphasized?

• It mainly improves the car’s appearance by keeping tires clean.

• It ensures vehicle safety and helps achieve longer tire service life.

• It prevents the need for any future tire rotations regardless of driving conditions.

• It eliminates all punctures by making tires completely resistant to nails.