Question 1

The aspect ratio of a tire means ________.

Accepted Answer

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 ratioE) A) and B)
F) A) and C)

Question 2

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?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) All of the above
F) B) and C)

Question 3

Wheel back spacing is also called ________.

Accepted Answer

A)  Positive offset
B)  Offset
C)  Negative offset
D)  Rear spacingE) B) and C)
F) A) and B) D

Question 4

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?

Accepted Answer

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

Question 5

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?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) A) and B)
F) All of the above

Question 6

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

Accepted Answer

A)  M12 × 20
B)  M12 × 1.5
C)  1/2 × 20
D)  M14 × 18RHE) None of the above
F) A) and C)

Question 7

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

Accepted Answer

A)  Tread design
B)  Bead design
C)  Tire conicity
D)  The angle of the body (carcass)  pliesE) None of the above
F) All of the above

Question 8

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

Accepted Answer

A)  Rayon
B)  Nylon
C)  Steel mesh
D)  All of these are correctE) A) and B)
F) All of the above

Question 9

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?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) A) and B)
F) All of the above

Question 10

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

Accepted Answer

A)  Speed rating
B)  Traction
C)  Treadwear
D)  TemperatureE) None of the above
F) A) and C) A

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

A)  Body (carcass)  ply
B)  Belt
C)  Bead
D)  Inner linerE) A) and D)
F) B) and D)

Question 13

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?

Accepted Answer

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

Question 14

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

Accepted Answer

A)  C
B)  A
C)  B
D)  None of theseE) A) and B)
F) A) and C)

Question 15

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

Accepted Answer

A)  Negative offset
B)  Positive offsetC) A) and B)
D) undefined

Question 16

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

Accepted Answer

A)  Oval
B)  Flat
C)  Chrome
D)  TaperedE) B) and D)
F) C) and D)

Question 17

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

Accepted Answer

A)  15 mm
B)  20 mm
C)  10 mm
D)  25 mmE) None of the above
F) C) and D)

Question 18

All radial tires are belted.

Accepted Answer

A) True 
 B)False

Question 19

Some vehicles use lug bolts instead of lug nuts.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A)  Positive offset
B)  Negative offsetC) A) and B)
D) undefined

Exam 109: Tires and Wheels

The aspect ratio of a tire means ________.

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Wheel back spacing is also called ________.

Correct AnswerverifiedD

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?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA

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

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

All radial tires are belted.

Correct AnswerverifiedShow Answer

Some vehicles use lug bolts instead of lug nuts.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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