TBC Review 1

General Motors

Which automobile manufacturer(s) require that the tires fitted on certain vehicles meet Tire Performance Criteria (TPC)?

AA

Which traction grade signifies the best traction?

DOT

The ECE symbol on a tire's sidewall is the European equivalent of which U.S marking?

Lowest speed rated tire

We use speed ratings on tires in order to safely match the right tires to the right vehicle. Replacing tires with a lower speed rated tire than the OE tire reduces the speed capability of the vehicle to that of the:

M+S

Which tire marking indicates that the tire meets the RMA's definition of a tire designed for use in severe snow conditions?

Treadwear, traction and temperature

A tire's UTQG rating provides quick information on:

True

The speed rating system describes the top speed for which a tire is certified when properly loaded and inflated

True

Generally speaking, the higher the speed rating of a tire, the better the handling and overall performance

Tire weight

The DOT marking on the tire sidewall provides information about all EXCEPT for:

maximum allowable inflation pressure

The maximum load and inflation molded on the sidewall indicate the maximum load that can be carried and the:

W

For a tire marked P275/40Z17 93W, which letter tells you the maximum speed capability of the tire is 168 MPH?

C

Which part of the following Light Truck tire marking indicates the load-carrying capacity? LT235/75R15/C

Extra load (EL)

The load-carrying capacity of European tires is rated as Standard Load or:

false, twice

A tire with a rating of 400 will last approximately three times as long as a tire with a rating of 200

A to C

UTQG grades for temperature range from what to what?

A

What grade signifies the most resistance to heat in the UTQG grades for temperature range?

Which of these wheel covers are held on by lug nuts?

Which of these wheel covers is not held on by lug nuts?

Identify the type of wheel being serviced

What is the first step in removing a tire and wheel assembly?

21mm

The lug nuts on most passenger cars and minivans can be removed using one of two flip sockets. For the metric version, 19 mm hex on one side and what hex on the other?

socket could shatter and cause possible injury

What could happen if a chrome socket is used on an impact wrench?

rubber mallet

If the wheel and tire can’t be removed from the vehicle after the lug nuts are removed, a what can be used to strike the inner rim flange of the wheel?

17mm

What size socket do Audi, BMW, Volkswagen and Mercedes vehicles require to remove lug bolts from the wheels?

True

A standard flip socket has a ¾ inch hex on one side and a 13/16 inch hex on the other.

80

On light truck tires with all steel construction, if the pressure is less than what percent, the tire must be completely deflated before being removed?

section height

Which tire term gives us the distance from the rim seat to outer tread surface of an unloaded tire?

shorter, quicker

The lower a tire’s Aspect Ratio, the ___ the sidewall and, in most cases the ___ steering response.

section width

Which term denotes the linear distance between the outside sidewalls of an inflated tire without any load (exclusive of protruding side ribs or decorations)?

rim width

Which tire term measures the linear distance between rim flanges in contact with the tire?

European Metric

The sizing system for a 225/60R16 is?

Light Truck Numeric

What type of sizing system does the following represent? 7.50R16/LT/D

rim diameter in inches

In the sizing notation 185/70R14 88S, what does the “14” mean?

75-105

Load indices for passenger car or minivan vehicles generally range from __ to __.

load index and speed rating

The information in a tire’s service description tells you the:

10.82

A tire marked P275/60R15 has an approximate section width of how many inches?

82

For a European Metric size tire when no aspect ratio is given (e.g. 155SR13 or 155R13 78S), what is the aspect ratio?

tread width

Which tire term refers to the portion of the tread design which comes in contact with the road?

6000 to 8000

Tires should be rotated every ___ to ___ miles.

nitrogen

Tires can be inflated safely with either air or ___

false

A “temporary use only” spare tire can be used in a four-tire rotation

Never

When is it acceptable to exceed the recommended maximum pressure during normal driving conditions?

5

It is recommended that any tires in service __ years or more from the date of manufacture be replaced with new tires.

load index of the tire

Changing the inflation pressure of a tire changes all but what?

a

Which of these graphics shows the recommended way to rotate tires on a four-wheel drive SUV?

3

What is the maximum number of repairs allowed to an individual tire, all other limits being met?

Never

When does Michelin recommend that used tires be installed on a vehicle?

right rear

If a customer has a spare that is a regular size tire, where should it be placed during rotation?

3; 1

Tire pressures should be checked monthly when the tires are cold. This would be when the vehicle has been parked for at least ___ hours or has been driven less than ___ mile at moderate speed.