Deck 109: Tires and Wheels

Question 1

The part of the tire that is just under the tread of a radial tire is called the ________.

A)Body (carcass) ply
B)Belt
C)Bead
D)Inner liner

Answer 1

Belt

Question 2

The aspect ratio of a tire means ________.

A)The ratio of height to width
B)The ratio of width to height
C)The ratio of rolling resistance
D)Its width to diameter of a wheel ratio

Answer 2

The ratio of height to width

Question 3

A tire is labeled 215/60R×15 92T; the T indicates ________.

A)Its load rating
B)Its speed rating
C)Its temperature resistance rating
D)Its tread wear rating

Answer 3

Its speed rating

Question 4

A tire is labeled 215/60R×5 92T; the 92 indicates ________.

A)Temperature resistance rating
B)Speed rating
C)Tread wear rating
D)Load rating

Question 5

Radial tires can cause a vehicle to pull to one side while driving. This is called "radial tire pull" and is often due to ________.

A)Tread design
B)Bead design
C)Tire conicity
D)The angle of the body (carcass) plies

Question 6

Tire inflation is very important to the safe and economical operation of any vehicle. Technician A says that the tire pressure should never exceed the maximum pressure imprinted on the sidewall of the tire. Technician B says to inflate tires to the pressures recommended on the tire information decal or placard on the drivers door. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 7

When purchasing replacement tires, do not change tire width from the stock size by more than ________.

A)15 mm
B)20 mm
C)10 mm
D)25 mm

Question 8

What do the letters JJ mean in a wheel designation size labeled 14×7JJ?

A)The back spacing of the rim
B)The bolt circle code
C)The shape of the flange area
D)The offset of the rim

Question 9

Technician A says that a PAX run-flat tire uses a special wheel. Technician B says that a standard tire can be used to replace a PAX run-flat tire. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 10

Wheel back spacing is also called ________.

A)Positive offset
B)Offset
C)Negative offset
D)Rear spacing

Question 11

Front-wheel drive vehicles usually use what type of wheel?

A)Negative offset
B)Positive offset

Question 12

All radial tires are belted.

Question 13

Which of the following is not part of the UTQG system?

A)Speed rating
B)Traction
C)Treadwear
D)Temperature

Question 14

Technician A says that all tires sold for passenger vehicle use must be approved by the DOT. Technician B says that the DOT code will indicate the build date of the tire. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 15

Technician A says to always purchase replacement tires with the same or greater speed rating as when the vehicle was new. Technician B says to install the same type of tire (example: m+s) on all wheels. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 16

If the center section of a wheel is outward from the wheel center line, it has ________.

A)Positive offset
B)Negative offset

Question 17

Technician A says that backspacing is the same as offset. Technician B says that backspacing is the distance between the back rim edge and the wheel center section. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 18

Technician A says that the bolt circle is the diameter of a circle that can be drawn through the center of each lug hole or stud. Technician B says that lug nuts have different tapers to fit different wheel lug holes. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 19

Which of these is (are) a main function of tires?

A)Provide friction (traction) between the vehicle and the road
B)Serve as shock absorbers to cushion the vehicle ride
C)Both A and B
D)Neither A nor B

Question 20

Technician A says that grooves in the tire tread are necessary for excellent dry traction. Technician B says that grooves in the tire tread are necessary for wet traction, to prevent hydroplaning. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 21

Hydroplaning can occur at speeds as low as ________.

A)45 mph
B)30 mph
C)55 mph
D)40 mph

Question 22

Technician A says that a damaged bead can be repaired. Technician B says that tires with damaged beads must be replaced. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 23

Kevlar is the brand name for which fiber used in tire construction?

A)Nylon
B)Aramid
C)Polyester
D)None of these

Question 24

Which of the following may be part of a radial tire belt?

A)Rayon
B)Nylon
C)Steel mesh
D)All of these are correct

Question 25

The dot painted on many tires near the major splice indicates ________.

A)The smallest diameter of the tire
B)A sipe
C)The largest diameter of the tire
D)None of these

Question 26

During tire construction, after the tire has been heated to 300 degrees F (150 degrees C) for 30 minutes, it is called a ________.

A)Cured tire
B)Green tire
C)Both A and B
D)Neither A nor B

Question 27

Most lug nuts are ________ so that the wheel stud will center the wheel onto the hub.

A)Oval
B)Flat
C)Chrome
D)Tapered

Question 28

Which of these is a common metric lug nut thread size?

A)M12 × 20
B)M12 × 1.5
C)1/2 × 20
D)M14 × 18RH

Question 29

High flotation truck tires are designed for ________.

A)Superior traction in sand or mud
B)Superior off-road performance
C)Both A and B
D)Neither A nor B

Question 30

Technician A says that the load index marked on the tire indicates the maximum load the vehicle can carry. Technician B says that the load index marked on the tire indicates the maximum load each tire is designed to carry. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 31

Some vehicles use lug bolts instead of lug nuts.

Question 32

Which part of the wheel shown is responsible for holding the tire beads in place?

A)C
B)A
C)B
D)None of these