Question 1

The ____ is the section of the tire that contacts on the road.

Accepted Answer

A)  tread 
B)  belt 
C)  ply 
D)  sipe 
A)  tread 
B)  belt 
C)  ply 
D)  sipe A

Question 2

While having a discussion, Technician A says that DOT standards require the overall diameter of a replacement tire to be within +2% to 3% of what the tire was as OE. Technician B says that DOT standards require the overall diameter of a replacement tire to be within +2% to 5% of what the tire was as OE. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B 
A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B A

Question 3

The term MOST-Likely used to describe the weight of the vehicle without passengers or luggage but includes a full tank of fuel and all fluids is:

Accepted Answer

A)  plus sizing 
B)  curb weight 
C)  drop weight 
D)  belt weight 
A)  plus sizing 
B)  curb weight 
C)  drop weight 
D)  belt weight B

Question 4

Y-rated tires are rated at 168 mph (270 km/h).

Accepted Answer

A) True 
 B)False

Question 5

What is the difference between a lower profile tire and a high-profile tire?

Accepted Answer

Lower profile tires grip bette

Question 6

When changing tire sizes, what five things do you need to consider about the replacement tire?

Accepted Answer

When changing tire sizes, the following

Question 7

The term MOST-Likely used to describe the load limit for each of the vehicle's tires under cold inflation is:

Accepted Answer

A)  traction 
B)  hydroplaning 
C)  plus sizing 
D)  load rating 
A)  traction 
B)  hydroplaning 
C)  plus sizing 
D)  load rating

Question 8

On a tire information sticker, the number that comes after the cross-sectional width of the tire is the ____________________, which is a measurement of the height-to-width ratio.

Accepted Answer

The answer of On a tire information sticker, the number...

Question 9

While having a discussion, Technician A says that you should never install undersized tires on a vehicle. The vehicle will be lower, and the speedometer will no longer be accurate. Technician B says that the increase in engine rpm for a given speed will result in a decrease in fuel economy. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B 
A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B

Question 10

____________________ provide strength to the tire to support the load of the vehicle.

Accepted Answer

The answer of ____________________ provide strength to the tire to...

Question 11

Which of the following will LEAST-Likely have casing plies that cross each other at angles of 35-45 degrees?

Accepted Answer

A)  Bias-ply tires 
B)  Diagonal tires 
C)  Cross-ply tires 
D)  Radial tires 
A)  Bias-ply tires 
B)  Diagonal tires 
C)  Cross-ply tires 
D)  Radial tires

Question 12

A tire's height is called its ____.

Accepted Answer

A)  profile 
B)  traction 
C)  load index 
D)  footprint 
A)  profile 
B)  traction 
C)  load index 
D)  footprint

Question 13

Hydroplaning is a term used by chemical engineers to describe a rubber's energy absorption characteristics.

Accepted Answer

A) True 
 B)False

Question 14

What is the purpose of a drop center?

Accepted Answer

A drop center or rim

Question 15

A tire's ability to grip the road is called ____________________.

Accepted Answer

The answer of A tire's ability to grip the road...

Question 16

Which of the following statements is LEAST-Likely true?

Accepted Answer

A)  Snow chains are used in some mountain areas during severe winter weather when roads have become covered with ice and snow. 
B)  Cable chains are just as effective as conventional chains, but are apt to cause damage due to incorrect installation. 
C)  A run-flat tire can partly support the vehicle even when the tire is completely empty of air and can be driven up to 70 miles without air before suffering damage. 
D)  Winter tires can provide better handling in snow than is afforded by four-wheel drive without winter tires. 
A)  Snow chains are used in some mountain areas during severe winter weather when roads have become covered with ice and snow. 
B)  Cable chains are just as effective as conventional chains, but are apt to cause damage due to incorrect installation. 
C)  A run-flat tire can partly support the vehicle even when the tire is completely empty of air and can be driven up to 70 miles without air before suffering damage. 
D)  Winter tires can provide better handling in snow than is afforded by four-wheel drive without winter tires.

Question 17

All of the following statements are true EXCEPT:

Accepted Answer

A)  at high speeds, non-speed-rated tires distort in the sidewall and tread areas. 
B)  light truck tires run hotter but dissipate heat better than passenger car tires. 
C)  low-profile tires often have one or more sections of sidewall that extend beyond the flange of an expensive aluminum wheel to protect it from damage when it rubs against a curb. 
D)  nylon cap plies are extra plies on the sides of the normal tire plies. 
A)  at high speeds, non-speed-rated tires distort in the sidewall and tread areas. 
B)  light truck tires run hotter but dissipate heat better than passenger car tires. 
C)  low-profile tires often have one or more sections of sidewall that extend beyond the flange of an expensive aluminum wheel to protect it from damage when it rubs against a curb. 
D)  nylon cap plies are extra plies on the sides of the normal tire plies.

Question 18

Sidewall deflection allows more of the tread to be in contact with the road surface.

Accepted Answer

A) True 
 B)False

Question 19

A belt is only in the area of a tire under the tread and does not extend under the sidewalls.

Accepted Answer

A) True 
 B)False

Question 20

All of the following statements are true EXCEPT:

Accepted Answer

A)  pure rubber is a hydrocarbon derived from the latex of a tree grown in all of the subtropical areas of the world. 
B)  rubber freezes at only 500F and becomes sticky at 860F. 
C)  rubber swells when contacted by many liquids and is damaged by sunlight. 
D)  for rubber to be useful, it must be vulcanized by heat to make it stable. 
A)  pure rubber is a hydrocarbon derived from the latex of a tree grown in all of the subtropical areas of the world. 
B)  rubber freezes at only 500F and becomes sticky at 860F. 
C)  rubber swells when contacted by many liquids and is damaged by sunlight. 
D)  for rubber to be useful, it must be vulcanized by heat to make it stable.

Exam 61: Tire and Wheel Theory

The ____ is the section of the tire that contacts on the road.

The term MOST-Likely used to describe the weight of the vehicle without passengers or luggage but includes a full tank of fuel and all fluids is:

Y-rated tires are rated at 168 mph (270 km/h).

What is the difference between a lower profile tire and a high-profile tire?

When changing tire sizes, what five things do you need to consider about the replacement tire?

The term MOST-Likely used to describe the load limit for each of the vehicle's tires under cold inflation is:

On a tire information sticker, the number that comes after the cross-sectional width of the tire is the ____________________, which is a measurement of the height-to-width ratio.

____________________ provide strength to the tire to support the load of the vehicle.

Which of the following will LEAST-Likely have casing plies that cross each other at angles of 35-45 degrees?

A tire's height is called its ____.

Hydroplaning is a term used by chemical engineers to describe a rubber's energy absorption characteristics.

What is the purpose of a drop center?

A tire's ability to grip the road is called ____________________.

Which of the following statements is LEAST-Likely true?

All of the following statements are true EXCEPT:

Sidewall deflection allows more of the tread to be in contact with the road surface.

A belt is only in the area of a tire under the tread and does not extend under the sidewalls.

All of the following statements are true EXCEPT:

Introduction to the Automobile

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