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ATA 125 > Review > Flashcards

Review Flashcards

1
Q

Most tires used today have built-in tread wear indicators (wear bars) to show when they need replacement.

A

True

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2
Q

Radial tires do not require special patches for puncture repair like a patch plug.

A

False

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3
Q

An asymmetrical tire has a tread design that is different from one side to the other.

A

True

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4
Q

Some older and heavy-duty vehicles have left-hand threaded wheel studs and nuts on the driver’s side of the vehicle.

A

True

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5
Q

A tire filled with nitrogen gas will hold pressure longer than if filled with air, due to the molecules being larger.

A

True

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6
Q

A P225/60 R16 89S tire cannot be driven safely at speeds over 130 mph.

A

True

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7
Q

Tightening lug nuts beyond specifications may distort the disc brake rotor.

A

True

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8
Q

Amarid and kevlar tire cords are lighter than steel cords and, pound for pound, stronger than steel.

A

True

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9
Q

When 2/32 inch (1.58 mm) is indicated on a tread depth gauge, the tire should be replaced.

A

True

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10
Q

Technician A says rim diameter is determined by measuring across the rim between the flanges. Technician B says rim width is measured across the bead seating areas from the top to the bottom of the wheel. Who is correct?

A

neither A nor B

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11
Q

Before dismounting a tire with a TPM sensor if possible ______.

A

unbolt the air valve/sensor assembly and allow it to drop into the tire

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12
Q

Which of the following will NOT cause uneven tire wear?

A

improper inflation pressure
wheels out of alignment
tires out of balance
high-speed driving

Answer
high-speed driving

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13
Q

Technician A says an incorrect tire and wheel size can affect bearing life. Technician B says changing tire and wheel sizes does not affect antilock brake systems. Who is correct?

A

A only

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14
Q

Which of the following is NOT a factor rated by the UTQG [Uniform Tire Quality Grading] rating system?

A

load capacity
tread wear
temperature resistance
traction

Answer
load capacity

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15
Q

Tire sidewall markings are being discussed. Technician A says maximum load, traction, and wear ratings are indicated. Technician B says maximum inflation pressure, tread plies, and sidewall plies are indicated. Who is correct?

A

both A and B

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16
Q

Which of the following statements is NOT correct?

A

Wheel balancing is required only when new tires are installed

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17
Q

Which of the following statements is NOT correct?

A

The bead is the decorative pattern at the outer edge of the tread

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18
Q

Which of the following is NOT a type of run-flat tire?

A

anaerobic self-inflating

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19
Q

Profile is another name for a tire’s ______.

A

aspect ratio

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20
Q

Most information about a car’s tires can be found ______.

A

on the tire placard

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21
Q

Which of the following properties is NOT printed on the tire placard?

A

lug nut torque

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22
Q

A tire that shows maximum wear on the outside edges of the tread while showing little or no wear in the center of the tread was probably caused by ______.

A

underinflation

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23
Q

A tire that wobbles from side to side is said to have ______.

A

lateral runout

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24
Q

Technician A says tire tread patterns may be directional or nondirectional. Technician B says tire tread patterns may be symmetric or asymmetric. Who is correct?

A

both A and B

25
Q

Technician A says a vehicle can be driven indefinitely on a high-pressure mini spare tire. Technician B says using a space saver spare tire can cause the ABS system to set a code. Who is correct?

A

B only

26
Q

Technician A says radial ply tires are more rigid in the sidewall area than bias ply tires. Technician B says the belts in a radial tire restrict tread motion during contact with the road, thus improving tread life and traction. Who is correct?

A

B only

27
Q

Technician A says the front wheel bearings on a typical FWD car are pressed in and out of the steering knuckle. Technician B says the rear wheel bearings on a typical FWD car are often serviced in the same way as the front wheel bearings for an RWD car. Who is correct?

A

both A and B

28
Q

On a directional type tire, the direction of rotation is indicated by ______.

A

an arrow printed on the sidewall

29
Q

Technician A says the more aggressive the tread, the more noise it will make. Technician B says softer tires typically make more noise and last longer. Who is correct?

A

A only

30
Q

Technician A says the proper inflation pressure is printed on the tire sidewall. Technician B says the proper inflation pressure is listed on the tire placard on the driver’s door jamb. Who is correct?

A

B only

31
Q

Why are lightweight aluminum wheels superior to heavier stamped steel wheels?

A

Their lower unsprung weight improves handling

32
Q

On a tire with a designation of P205/70R14, the distance between the rim and the top of the tire is ______.

A

70 percent of 205 millimeters (mm)

33
Q

Technician A sets tire pressure when the tires are hot. Technician B sets tire pressure when the tires are cold. Who is correct?

A

B only

34
Q

Where does an overinflated tire show its wear?

A

in the center of the tread

35
Q

What type of bead loosener should be used when dismounting run-flat tires?

A

roller type

36
Q

Which of the following does not require a TPM warning system reset/relearn procedure?

A

tire pressure adjustment

37
Q

Technician A says an uneven rumble or a grinding sound indicates possible wheel bearing problems. Technician B says wheel bearings should be checked for wear and looseness by grasping the top and bottom of the tire and trying to wobble the wheel and tire back and forth. Who is correct?

A

both A and B

38
Q

On a P215/65 R15 89H tire, what is the width [section width] of the tire?

A

215 mm

39
Q

On a P215/65 R15 89H tire, what is the profile [aspect ratio] of the tire?

A

65 percent

40
Q

Technician A says radial tires can be mixed with other types of tires on the same vehicle. Technician B says tires should be replaced with ones of the same or higher speed rating. Who is correct?

A

B only

41
Q

Technician A says an incorrect wheel can affect tire clearance, or speedometer and odometer calibrations. Technician B says the wrong size wheel can also affect the antilock brake system. Who is correct?

A

both A and B

42
Q

Indirect tire pressure monitoring systems use information from _____ to detect low tire pressure.

A

ABS wheel speed sensors

43
Q

Technician A uses a head-type plug to repair a tire puncture in the tread area of a tire. Technician B injects tire sealant through the valve stem to repair a tire puncture in the sidewall. Who is correct?

A

A only

44
Q

Technician A says wheel tramp is caused by dynamic imbalance. Technician B says wheel shimmy is caused by static imbalance. Who is correct?

A

neither A nor B

45
Q

Technician A says front bearing assembly locknuts for RWD vehicles are typically heavily torqued to maintain the bearing adjustment. Technician B says the axle nut for a FWD front wheel bearing assembly is often staked in place. Who is correct?

A

B only

46
Q

A ____________________ type wheel balancer measures the deflection of the tire as it rolls under pressure applied to the tire by a roller. The machine then makes recommendations for the service required to remove all runout and ensure vibration-free operation.

A

road force

47
Q

A tire that is off center and has an eccentricity problem is said to have ____________________ runout.

A

radial

48
Q

Tire wear that is uneven [different left wheel to right wheel] or premature is usually a good indicator of ____________________ and ____________________ system problems.

A

steering and suspension

49
Q

A ____________________ tire has the same handling qualities in either direction of rotation.

A

symetrical

50
Q

____________________ tires on a regular basis can preserve balanced handling and traction and even out tire wear.

A

rotating

51
Q

Tire pressure monitoring systems are required on all ____________________ and newer passenger cars, trucks, multipurpose passenger vehicles, and buses with a gross vehicle weight rating of 10,000 pounds or less.

A

2008

52
Q

Tread wear is indicated as a number that ranges from ____________________ and higher.

A

100

53
Q

Typically, a self-supporting tire can be driven for 50 miles (80 km) at speeds up to ____________________ mph after it has lost air pressure.

A

50

54
Q

Most manufacturers recommend tire rotation at least every ____________________ miles.

A

6,000

55
Q

A bubble balancer performs a(n) ____________________ balance on a tire and wheel.

A

static

56
Q

What is hydroplaning ?

A

Hydroplaning is when a tire has lost contact with the ground on a wet surface due to a loss in friction and an inability to displace the fluid to maintain contact area with the roads surface. so the tire ends up rotating or floating if you will on the water instead of the road.

57
Q

List three popular methods of repairing tires.

A

Cord

Plug patch

and brazing (usually used on heavy equipment like farm tractors etc. )( also for off road use only.

58
Q

What is the difference between sprung weight and unsprung weight?

A

Sprung Weight is everything above the strut pocket body engine transmission etc.Whereas unsprung weight is everything below the strut pocket such as struts, tires, brakes, calipers, disc/drum brakes etc.

59
Q

Identify and describe three tire dimensions and properties that are imprinted on the tire sidewall.

A

P205 65 R17 85 H

P = Passenger

205 = 205mm wide tire

65 = aspect ratio or the tires aspect ration is 65% of 205mm

R = Radial

17 is the rim diameter.

85 is the Load Index

H is the Speed Rating

ATA 125 (1 decks)

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