Servicing Wheels And Tires

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Quizzes Created: 39 | Total Attempts: 148,538
| Attempts: 2,987 | Questions: 25 | Updated: Mar 21, 2025
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1. True or False. A tire valve is a specially designed opening that allows a tire to be inflated and then automatically closes to prevent air from escaping.

Explanation

The valve stem is a one way valve that allows the air pressure to be trapped inside the tire.

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About This Quiz
Servicing Wheels And Tires - Quiz

This quiz on 'Servicing Wheels and Tires' assesses knowledge on tire valves, effects of centrifugal force during cornering, tire temperature ratings, effects of tire inflation, and the necessity of tire balancing. It is designed for learners interested in automotive maintenance and engineering.

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2. True or False. Tires and wheels must be balanced statically and dynamically.

Explanation

There are two forms of tire inbalance. Static is on one plane; dynamic inbalance is on 2.

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3. Technician A says that all lug nuts must be torqued. Technician B says that all lug nuts must be properly sequenced. Who is correct?

Explanation

All wheel lugs need to be tightened to specification and done so in a proper sequence.

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4. Tires can be balanced by the __________ method.

Explanation

All of the above are methods in how we balance wheels.

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5. The part of the tire that makes contact with the road is the:

Explanation

The tread of a tire is what contacts the road.

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6. True or False. A tire with an A temperature rating has the best temperature resistance.

Explanation

"A" is the highest temperature rating for a tire.

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7. A green valve stem cap on newer tires means that the tires are: 

Explanation

The green cap represents a tire that has been filled with nearly complete nitrogen.

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8. The principle that allows your car to stop is: 

Explanation

Friction is what stops a car, whether it be from between the brake components or the contact of the tire with the road.

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9. The tire must be an exact fit on the rim to:

Explanation

It is important to use the proper tire size for the application doe to all of the listed.

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10. The _________ seat is the edge of the rim that creates a seal between the tire bead and the wheel.

Explanation

The bead of a tire is the belt reinforced, inner edge that seals the rubber of the tire to the metal of the rim.

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11. When inspecting tires on the car, you would check for all of the following EXCEPT:

Explanation

Inning linings wouldn't be inspected unless the tire were removed from the car and dismounted from the rim.

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12. True or False. The DOT number on a tire tells the technician the exact date the tire was made, to the minute. 

Explanation

The DOT date indicates the week of year, and the year a tire was manufactured.

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13. True or False. Over inflation of a tire causes excessive wear on the outer edges of the tread.

Explanation

Over inflation causes the tire to peak. The result is a tire that rides mostly on the center part of the tread, and wearing that part more quickly.

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14. Technician A says that paying attention to tires and wheels can also assist in identifying problems in the steering system. Technician B says that paying attention to tires and wheels can also assist in identifying problems in the suspension system. Who is correct?

Explanation

Steering angles that are out of specification will result in abnormal tire wear. Worn suspension parts will also result in abnormal tire wear, but in a different way than out of spec steering angles.

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15. There are three different wheel offsets: zero offset, positive offset, and negative offset. Technician A says that negative offset places the hub mounting closer to the brake side of the wheel. Technician B says that negative offset is farther away from the brake side of the wheel. Who is correct?

Explanation

Negative offset is when the mounting point of the rim is closer to the hub of the vehicle.

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16. Technician A says that 98% of the tires sold are of the radial design. Technician B says that 98% of the tires sold are of the bias ply design. Who is correct?

Explanation

The vast majority of tires used on vehicles today are of the radial design.

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17. The aspect ratio of a tire is:

Explanation

Aspect ratio is the ratio of height of the tire, to its width. It's the second value in a tire's size.

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18. True or False. When a radial tire bulges on the sidewall, this means that the tire is underinflated all the time. 

Explanation

A bulge on the side of a tire indicates a broken belt on the inside of the tire.

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19. Technician A says that a tire will increase or decrease 1 psi for each 10°F of temperature. Technician B says that if the vehicle has been driven to warm the tires, you must adjust the air pressure down to the manufacturer's recommended pressure. Who is correct?

Explanation

A tire's pressure will be effected 1psi by a change in 10 degrees F. Tire pressure specifications are given when the tire is cold and should only be adjusted when they are such.

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20. The height of the center of gravity is determined by the ___________ of the center of the mass above the road surface.

Explanation

Center of gravity is a measurement calculated with respect to the height of an object. The height effects the object's relationship to earth's gravity.

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21. Technician A says some tire pressure monitoring systems have a sensor mounted in each wheel rim. Technician B says some tire pressure monitoring systems use the wheel speed sensors in the ABS system to detect tire pressure. Who is correct?

Explanation

Some TPMS compare the rotational speed of the tires to compare the size of each. Other TPMS use a sensor in each tire to monitor the pressure or each tire against programmed specifications for tire pressure.

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22. True or False. When checking air pressure, always refer to the tire sidewall, because this is the most accurate air pressure reading.

Explanation

The tire sidewall provides the maximum pressure for the tire. Vehicles each have their own specific tire pressure.

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23. During cornering, centrifugal force acts on a vehicle to produce:

Explanation

The force that moves you to the side of a vehicle while turning is called side force.

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24. Technician A says run-flat tires may be driven continually at zero inflation pressure. Technician B says some run-flat tires have sidewall reinforcements. Who is correct?

Explanation

Run flat tires are used as a bailout of situations where a vehicle doesn't have room for a spare. They are like any other tire, and need to be inflated to specification. Some of these tires have side wall reinforcement to retain its structure even when there is nearly zero pressure.

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25. Technician A says that tire pressures need to be checked when cold. Technician B says that tire pressures need to be checked before they are driven less than 1 mile. Who is correct?

Explanation

Tire pressures are adjusted when they are cold. Cars that have been driven at least a mile are considered to have hot tires.

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  • Answered
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True or False. A tire valve is a specially designed opening that...
True or False. Tires and wheels must be balanced statically and...
Technician A says that all lug nuts must be torqued. Technician B says...
Tires can be balanced by the __________ method.
The part of the tire that makes contact with the road is the:
True or False. A tire with an A temperature rating has the best...
A green valve stem cap on newer tires means that the tires are: 
The principle that allows your car to stop is: 
The tire must be an exact fit on the rim to:
The _________ seat is the edge of the rim that creates a seal between...
When inspecting tires on the car, you would check for all of the...
True or False. The DOT number on a tire tells the technician the exact...
True or False. Over inflation of a tire causes excessive wear on the...
Technician A says that paying attention to tires and wheels can also...
There are three different wheel offsets: zero offset, positive offset,...
Technician A says that 98% of the tires sold are of the radial design....
The aspect ratio of a tire is:
True or False. When a radial tire bulges on the sidewall, this means...
Technician A says that a tire will increase or decrease 1 psi for each...
The height of the center of gravity is determined by the ___________...
Technician A says some tire pressure monitoring systems have a sensor...
True or False. When checking air pressure, always refer to the tire...
During cornering, centrifugal force acts on a vehicle to produce:
Technician A says run-flat tires may be driven continually at zero...
Technician A says that tire pressures need to be checked when...
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