Servicing Wheels And Tires
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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.
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True
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False
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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.
During cornering, centrifugal force acts on a vehicle to produce:
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Under-steer.
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Side force.
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Over-steer.
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Slip angle.
Correct Answer
A. Side force.Explanation
The force that moves you to the side of a vehicle while turning is called side force.Rate this question:
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- 3.
True or False. A tire with an A temperature rating has the best temperature resistance.
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True
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False
Correct Answer
A. TrueExplanation
"A" is the highest temperature rating for a tire.Rate this question:
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- 4.
True or False. Over inflation of a tire causes excessive wear on the outer edges of the tread.
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True
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False
Correct Answer
A. FalseExplanation
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.Rate this question:
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- 5.
True or False. Tires and wheels must be balanced statically and dynamically.
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True
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False
Correct Answer
A. TrueExplanation
There are two forms of tire inbalance. Static is on one plane; dynamic inbalance is on 2.Rate this question:
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- 6.
True or False. When checking air pressure, always refer to the tire sidewall, because this is the most accurate air pressure reading.
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True
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False
Correct Answer
A. FalseExplanation
The tire sidewall provides the maximum pressure for the tire. Vehicles each have their own specific tire pressure.Rate this question:
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- 7.
True or False. When a radial tire bulges on the sidewall, this means that the tire is underinflated all the time.
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True
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False
Correct Answer
A. FalseExplanation
A bulge on the side of a tire indicates a broken belt on the inside of the tire.Rate this question:
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- 8.
True or False. The DOT number on a tire tells the technician the exact date the tire was made, to the minute.
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True
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False
Correct Answer
A. FalseExplanation
The DOT date indicates the week of year, and the year a tire was manufactured.Rate this question:
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- 9.
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?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
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.Rate this question:
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- 10.
The height of the center of gravity is determined by the ___________ of the center of the mass above the road surface.
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Height
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Depth
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Width
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Length
Correct Answer
A. HeightExplanation
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.Rate this question:
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- 11.
The _________ seat is the edge of the rim that creates a seal between the tire bead and the wheel.
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Rim
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Bead
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Wheel
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Disc
Correct Answer
A. BeadExplanation
The bead of a tire is the belt reinforced, inner edge that seals the rubber of the tire to the metal of the rim.Rate this question:
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- 12.
The tire must be an exact fit on the rim to:
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Ensure the tire and rim will seal the air in a tubeless tire.
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Transfer forces between the tire and wheel without slipping or chafing.
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Prevent the tire from turning on the rim.
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All the above
Correct Answer
A. All the aboveExplanation
It is important to use the proper tire size for the application doe to all of the listed.Rate this question:
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- 13.
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?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech AExplanation
Negative offset is when the mounting point of the rim is closer to the hub of the vehicle.Rate this question:
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- 14.
Technician A says that all lug nuts must be torqued. Technician B says that all lug nuts must be properly sequenced. Who is correct?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
All wheel lugs need to be tightened to specification and done so in a proper sequence.Rate this question:
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- 15.
The principle that allows your car to stop is:
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Rubber in the tires
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Friction.
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Centrifugal force.
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Ply rating.
Correct Answer
A. Friction.Explanation
Friction is what stops a car, whether it be from between the brake components or the contact of the tire with the road.Rate this question:
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- 16.
The part of the tire that makes contact with the road is the:
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Cords.
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Plies.
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Inner liner.
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Tread.
Correct Answer
A. Tread.Explanation
The tread of a tire is what contacts the road.Rate this question:
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- 17.
A green valve stem cap on newer tires means that the tires are:
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Green design.
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Filled with nitrogen.
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Filled with helium.
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Filled with hydrogen.
Correct Answer
A. Filled with nitrogen.Explanation
The green cap represents a tire that has been filled with nearly complete nitrogen.Rate this question:
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- 18.
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?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech AExplanation
The vast majority of tires used on vehicles today are of the radial design.Rate this question:
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- 19.
The aspect ratio of a tire is:
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The width of a tire.
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The rim diameter.
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How much air to inflate the tire to.
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Ratio of height to width.
Correct Answer
A. Ratio of height to width.Explanation
Aspect ratio is the ratio of height of the tire, to its width. It's the second value in a tire's size.Rate this question:
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- 20.
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?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
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.Rate this question:
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- 21.
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?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech BExplanation
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.Rate this question:
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- 22.
When inspecting tires on the car, you would check for all of the following EXCEPT:
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Wear.
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Inflation pressure.
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Punctures.
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Inner lining damage.
Correct Answer
A. Inner lining damage.Explanation
Inning linings wouldn't be inspected unless the tire were removed from the car and dismounted from the rim.Rate this question:
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- 23.
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?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Both Techs A and BExplanation
Tire pressures are adjusted when they are cold. Cars that have been driven at least a mile are considered to have hot tires.Rate this question:
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- 24.
Tires can be balanced by the __________ method.
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Static
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Dynamic
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Road force
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All the above
Correct Answer
A. All the aboveExplanation
All of the above are methods in how we balance wheels.Rate this question:
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- 25.
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?
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Tech A
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Tech B
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Both Techs A and B
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Neither Tech A nor B
Correct Answer
A. Tech AExplanation
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.Rate this question:
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Quiz Review Timeline (Updated): Mar 21, 2023 +
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Nov 03, 2014Quiz Created by
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