Deck 45: Tires and Wheels

Question 1

The wheel offset is considered negative if the centerline of the rim is inboard of the mounting face and positive if outboard of the mounting face.

Answer 1

False

Question 2

A tire filled with nitrogen gas will hold pressure three times longer than if filled with air.

Answer 2

True

Question 3

Some vehicles have left-hand threaded wheel studs and nuts on the driver's side of the vehicle.

Answer 3

True

Question 4

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

Question 5

A bad axle or wheel bearing will not cause a tire wear problem.

Question 6

When replacing tires, renew the valve stems only if they are leaking.

Question 7

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

Question 8

Radial tires do not require special patches for puncture repair.

Question 9

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

Question 10

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

Question 11

Which of the following materials is not used in the body and belts of radial tires?

A) steel mesh
B) nylon
C) fiberglass
D) copper mesh

Question 12

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

Question 13

The tire pressure warning light on a TPM system will illuminate when the tire pressure drops 5 percent below its minimum pressure.

Question 14

Most asymmetric tires are nondirectional tires.

Question 15

Tire rotation will not correct wear problems due to misalignment, worn mechanical parts, or incorrect inflation pressures.

Question 16

A P195/75R14 tire classification includes both metric and English standard measurements.

Question 17

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

Question 18

A self-sealing tire will seal a puncture up to 3/16 inch (4.76 mm).

Question 19

Profile is another name for a tire's ______.

A) size
B) load range
C) bead
D) aspect ratio

Question 20

Studded tires have been outlawed in many states because they damage the road and can be a safety hazard when driven on dry surfaces.

Question 21

Technician A says many modern vehicles are equipped with bias ply or belted-bias ply tires. Technician B says modern vehicles are equipped with radial ply tires. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 22

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

A) under the hood
B) on the tire placard
C) above the driver's visor
D) above the passenger's visor

Question 23

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

A) Their lower unsprung weight improves handling
B) They help improve fuel economy
C) They improve traction
D) They provide no benefit to the vehicle other than cosmetic

Question 24

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

A) tire rotation
B) tire pressure adjustment
C) sensor replacement
D) tire replacement

Question 25

Technician A says nylon cord tires generally give a smoother ride than rayon, but do not have the inherent strength needed to cope with long high-speed runs. Technician B says polyester and fiberglass tires offer many of the best qualities of rayon and nylon, but without the disadvantages. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 26

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
B) B only
C) both A and B
D) neither A nor B

Question 27

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 28

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 29

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

A) radial runout
B) lateral runout
C) eccentric runout
D) none of these answers is correct

Question 30

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 31

Which of the following statements about sidewall markings is correct?

A) Aspect ratio or profile indicates a grading for tread life
B) Recommended air pressure and safety warnings are indicated
C) The tire's maximum safe inflation pressure and load are indicated
D) Section width is the distance between the tread and the bead

Question 32

Technician A says modern vehicles use tubeless tires. Technician B says only heavy-duty trucks use pneumatic tires. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 33

Which of the following statements is NOT correct?

A) A cold patch should be stitched to the inner surface of the tire carcass
B) A tread puncture that is less than one-quarter inch in diameter is repairable
C) Wheel balancing is required only when new tires are installed
D) Punctures should be repaired from inside the tire

Question 34

Which of the following statements is NOT correct?

A) Belts are reinforcing materials that encircle the tire under the tread
B) The casing of the tire consists of layers of rubber-impregnated cords, called plies
C) Most tread patterns are designed to work well on both wet and dry roads
D) The bead is the decorative pattern at the outer edge of the tread

Question 35

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 36

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
B) B only
C) both A and B
D) neither A nor B

Question 37

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

A) 205 millimeters (mm)
B) 70 percent of 205 millimeters (mm)
C) 70 millimeters (mm)
D) 84 millimeters (mm)

Question 38

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 39

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 40

Where does an overinflated tire show its wear?

A) in the center of the tread
B) on the outside edges
C) both "in the center of the tread" and "on the outside edges"
D) neither "in the center of the tread" nor "on the outside edges"

Question 41

The section width divided by the section height is the _____ of the tire.

A) profile [aspect ratio]
B) load rating
C) UTQG rating
D) offset

Question 42

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

A) 65 mm
B) 215 mm
C) 6.5 inches
D) 8.9 inches

Question 43

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

A) self-sealing
B) auxiliary supported
C) self-supporting
D) anaerobic self-inflating

Question 44

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
B) B only
C) both A and B
D) neither A nor B

Question 45

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

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 46

Lateral and radial wheel runout is measured with a ______.

A) spirit level
B) straightedge
C) dial indicator
D) all answers are correct

Question 47

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

A) correct cold tire inflation [front and rear]
B) recommended maximum vehicle load
C) lug nut torque
D) tire size (including spare)

Question 48

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 49

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 50

Technician A says higher aspect ratios provide a softer ride because they will deflect more over irregular surfaces and under heavy loads. Technician B says shorter sidewall heights demand stiffer sidewalls. Therefore, tires with a low aspect ratio have a harsher ride. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 51

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

A) 15 percent
B) 65 percent
C) 89 percent
D) 215 percent

Question 52

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 53

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 54

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

A) ABS wheel speed sensors
B) infrared temperature sensors mounted inside the wheel well
C) acoustic sensors mounted on the suspension
D) a magnetic pickup mounted on the brake caliper

Question 55

Direct tire pressure monitoring [TPM] systems are being discussed. Technician A says the tire pressure sensor is a single unit with a built-in battery that measures tire pressure and temperature and transmits a signal and ID number for that particular tire. Technician B says the system does not require a relearn procedure after tires have been rotated or replaced because it knows the ID of each tire. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 56

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

A) roller type
B) shovel type
C) air blast
D) pneumatic

Question 57

Before dismounting a tire with a TPM sensor, ______.

A) drain the sensor battery by connecting a jumper wire between the valve stem and rim
B) unbolt the air valve/sensor assembly and allow it to drop into the tire
C) run a magnet over the tire valve to deactivate the transmitter
D) remove the valve core and loosen the retaining screw using a 3mm Allen wrench

Question 58

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) overinflation
B) underinflation
C) excessive high-speed driving
D) suspension or steering system problems

Question 59

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

A) load capacity
B) tread wear
C) temperature resistance
D) traction

Question 60

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

A) L or R printed on the sidewall
B) CW [clockwise] and ACW [anticlockwise] printed on the sidewall
C) an arrow printed on the sidewall
D) a notch in the bead indexes with a notch in the rim-a left tire only fits a left rim

Question 61

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

Question 62

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

Question 63

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

Question 64

When too much water separates the tire from the road, ____________________ takes place.

Question 65

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

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 66

Which of the following will NOT cause uneven tire wear?

A) improper inflation pressure
B) wheels out of alignment
C) tires out of balance
D) high-speed driving

Question 67

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

Question 68

____________________-ply tires have fabric plies that run alternatively and form a crisscross design.

Question 69

The ____________________ is the portion of the tire that helps keep it in contact with the rim of the wheel.

Question 70

Pneumatic tires are filled with ____________________.

Question 71

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

Question 72

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) A only
B) B only
C) both A and B
D) neither A nor B

Question 73

The tire ____________________, or safety compliance certification label, is generally found on the driver's door jamb.

Question 74

The ____________________ center area of the wheel is designed to allow for easy tire removal and installation.

Question 75

A tire's ____________________ is the ratio of its cross-sectional height (from tread to bead) to its cross-sectional width (from sidewall to sidewall).

Question 76

Running a ____________________ tool over a cold patch helps to bind it to the tire.

Question 77

Whenever a tapered roller bearing is replaced, its ______ must be replaced with it.

A) castellated nut
B) thrust washer
C) spindle
D) race

Question 78

In a P195/70 R14 79H tire, the number 79 is the ____________________ rating of the tire.

Question 79

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

Question 80

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