Servicing Wheels And Tires
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Chapter 27
- 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.
- A.
True
- B.
False
- 2.During cornering, centrifugal force acts on a vehicle to produce:
- A.
Under-steer.
- B.
Side force.
- C.
Over-steer.
- D.
Slip angle.
- 3.True or False. A tire with an A temperature rating has the best temperature resistance.
- A.
True
- B.
False
- 4.True or False. Over inflation of a tire causes excessive wear on the outer edges of the tread.
- A.
True
- B.
False
- 5.True or False. Tires and wheels must be balanced statically and dynamically.
- A.
True
- B.
False
- 6.True or False. When checking air pressure, always refer to the tire sidewall, because this is the most accurate air pressure reading.
- A.
True
- B.
False
- 7.True or False. When a radial tire bulges on the sidewall, this means that the tire is underinflated all the time.
- A.
True
- B.
False
- 8.True or False. The DOT number on a tire tells the technician the exact date the tire was made, to the minute.
- A.
True
- B.
False
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 10.The height of the center of gravity is determined by the ___________ of the center of the mass above the road surface.
- A.
Height
- B.
Depth
- C.
Width
- D.
Length
- 11.The _________ seat is the edge of the rim that creates a seal between the tire bead and the wheel.
- A.
Rim
- B.
Bead
- C.
Wheel
- D.
Disc
- 12.The tire must be an exact fit on the rim to:
- A.
Ensure the tire and rim will seal the air in a tubeless tire.
- B.
Transfer forces between the tire and wheel without slipping or chafing.
- C.
Prevent the tire from turning on the rim.
- D.
All the above
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 15.The principle that allows your car to stop is:
- A.
Rubber in the tires
- B.
Friction.
- C.
Centrifugal force.
- D.
Ply rating.
- 16.The part of the tire that makes contact with the road is the:
- A.
Cords.
- B.
Plies.
- C.
Inner liner.
- D.
Tread.
- 17.A green valve stem cap on newer tires means that the tires are:
- A.
Green design.
- B.
Filled with nitrogen.
- C.
Filled with helium.
- D.
Filled with hydrogen.
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 19.The aspect ratio of a tire is:
- A.
The width of a tire.
- B.
The rim diameter.
- C.
How much air to inflate the tire to.
- D.
Ratio of height to width.
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 22.When inspecting tires on the car, you would check for all of the following EXCEPT:
- A.
Wear.
- B.
Inflation pressure.
- C.
Punctures.
- D.
Inner lining damage.
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 24.Tires can be balanced by the __________ method.
- A.
Static
- B.
Dynamic
- C.
Road force
- D.
All the above
- 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?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
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