Exam 45: Tires and Wheels

Technician A says tire tread patterns may be directional or nondirectional. Technician B says tire tread patterns may be symmetric or asymmetric. Who is correct?

A bad axle or wheel bearing will not cause a tire wear problem.

When purchasing replacement tires, what wheel specifications must match the OEM wheels?

Where does an overinflated tire show its wear?

Technician A says the front wheel bearings on a typical FWD car are pressed in and out of the steering knuckle. Technician B says the rear wheel bearings on a typical FWD car are often serviced in the same way as the front wheel bearings for an RWD car. Who is correct?

Radial tires do not require special patches for puncture repair.

Wear indicator bars appear as 1.2-inch wide bands when the tire tread depth wears to ____________________ inch.

Typically, a self-supporting tire can be driven for 50 miles (80 km) at speeds up to ____________________ mph after it has lost air pressure.

Tread wear is indicated as a number that ranges from ____________________ and higher.

Which of the following statements about sidewall markings is correct?

Technician A says the more aggressive the tread, the more noise it will make. Technician B says softer tires typically make more noise and last longer. Who is correct?

Technician A says rim diameter is determined by measuring across the rim between the flanges. Technician B says rim width is measured across the bead seating areas from the top to the bottom of the wheel. Who is correct?

On a directional type tire, the direction of rotation is indicated by ______.

Tire sidewall markings are being discussed. Technician A says maximum load, traction, and wear ratings are indicated. Technician B says maximum inflation pressure, tread plies, and sidewall plies are indicated. Who is correct?

Which of the following materials is not used in the body and belts of radial tires?

Lateral and radial wheel runout is measured with a ______.

Direct tire pressure monitoring [TPM] systems are being discussed. Technician A says the tire pressure sensor is a single unit with a built-in battery that measures tire pressure and temperature and transmits a signal and ID number for that particular tire. Technician B says the system does not require a relearn procedure after tires have been rotated or replaced because it knows the ID of each tire. Who is correct?

Identify three tire dimensions and properties that are imprinted on the tire sidewall.

List three popular methods of repairing tires.

Amarid and kevlar tire cords are lighter than steel cords and, pound for pound, stronger than steel.