Tire Knowledge Quiz

Which type of tire has the most stable footprint?

• Bias ply.

• Belted bias ply.

• Radial ply.

• None of the above.

In a P-metric tire size designation, what do the last two digits represent?

• Load/size relationship.

• Rim or wheel diameter.

• Section width.

• Construction type.

The relationship of tire height to its width is called its ____.

• aspect ratio

• sidewall/tread ratio

• width percentage

• cross-sectional mass

Which of the following is an example of road damage to a tire?

• Puncture.

• Tearing.

• Sidewall bulge.

• Cupping.

Each of the following is a possible cause of tire vibration, except:

• ply separation.

• low inflation pressure.

• tire cupping.

• excessive tire runout.

Abnormal wear patterns can identify tire problems. Which pattern indicates that the tire was consistently underinflated?

• Wear along outer tread area.

• Wear along the centerline.

• Wear along one edge.

• Feathering of tread rubber.

Wheel lugs nuts should be torqued in a star-pattern then a circle-pattern

• True

• False

A wheel with a safety rim has small ridges to hold the tire bead in place if a blowout occurs.

• True

• False

The drop-center style wheel is used to allow dismounting and mounting of a tire.

• True

• False

The primary purpose of a wheel cover is appearance.

• True

• False