Lincoln Nautilus (2019 year). Instruction — part 22

CLEANING THE INSTRUMENT
PANEL AND INSTRUMENT
CLUSTER LENS

WARNING: Do not use chemical

solvents or strong detergents when
cleaning the steering wheel or instrument
panel to avoid contamination of the airbag
system.

Note: Follow the same procedure as
cleaning leather seats for cleaning leather
instrument panels and leather interior trim
surfaces. See Cleaning Leather Seats (page
343).

Clean the instrument panel and cluster lens
with a clean, damp and soft cloth, then use
a clean, dry and soft cloth to dry these areas.

•

Avoid cleaners or polishes that increase
the gloss of the upper portion of the
instrument panel. The dull finish in this
area helps protect you from undesirable
windshield reflection.

•

Do not use any household cleaning
products or glass cleaners as these may
damage the finish of the instrument
panel, interior trim and cluster lens.

•

Wash or wipe your hands clean if you
have been in contact with certain
products such as insect repellent and
suntan lotion to avoid possible damage
to the interior painted surfaces.

•

Do not allow air fresheners and hand
sanitizers to spill onto interior surfaces.
If a spill occurs, wipe off immediately.
Your warranty may not cover these
damages.

If a staining liquid like coffee or juice has
been spilled on the instrument panel or on
interior trim surfaces:

1. Wipe up spilled liquid using a clean, soft

cloth as quickly as possible.

2. Use Motorcraft Premium Leather and

Vinyl Cleaner or a commercially available
leather cleaning product for automotive
interiors. Test any cleaner or stain
remover on an inconspicuous area.

3. Alternatively, wipe the surface with a

clean, soft cloth and a mild soap and
water solution. Dry the area with a clean,
soft cloth.

4. If necessary, apply more soap and water

solution or cleaning product to a clean,
soft cloth and press it onto the soiled
area. Allow this to set at room
temperature for 30 minutes.

5. Remove the soaked cloth, then with a

clean, damp cloth, use a rubbing motion
for 60 seconds on the soiled area.

6. Dry the area with a clean, soft cloth.

CLEANING LEATHER SEATS

Note: Follow the same procedure as
cleaning leather seats for cleaning leather
instrument panels and leather interior trim
surfaces.

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Vehicle Care

For routine cleaning, wipe the surface with
a soft, damp cloth and a mild soap and water
solution. Dry the area with a clean, soft cloth.

Note: Test any cleaner or stain remover on
an inconspicuous area.

You should:
•

Remove dust and loose dirt with a
vacuum cleaner.

•

Clean and treat spills and stains as soon
as possible.

Do not use the following products as these
may damage the leather:
•

Oil and petroleum or silicone-based
leather conditioners.

•

Household cleaners.

•

Alcohol solutions.

•

Solvents or cleaners intended specifically
for rubber, vinyl and plastics.

REPAIRING MINOR PAINT
DAMAGE

Authorized dealers have touch-up paint to
match your vehicle’s color. Your vehicle color
code is printed on a sticker on the front,
left-hand side door jamb. Take your color
code to your authorized dealer to make sure
you get the correct color.

Before repairing minor paint damage, use a
cleaner such as Motorcraft Bug and Tar
Remover to remove particles such as bird
droppings, tree sap, insect deposits, tar
spots, road salt and industrial fallout.

Always read the instructions before using
cleaning products.

CLEANING THE WHEELS

1. Regularly clean them with a wheel

cleaner. We recommend that you use an
approved wheel cleaner if available.

2. Remove dirt and brake dust with a

sponge.

3. Remove tar and grease with a bug and

tar remover. We recommend that you use
an approved bug and tar remover if
available.

4. Thoroughly rinse the wheels with water

after cleaning.

If you intend on parking your vehicle for an
extended period after cleaning the wheels
with a wheel cleaner, drive your vehicle for
a few minutes before doing so. This reduces
the risk of corrosion of the brake discs, brake
pads and linings.

Do not clean the wheels when they are hot.

Note: Some car washes could damage
wheel rims and covers.

Note: Using non-recommended cleaners,
harsh cleaning products, chrome wheel
cleaners or abrasive materials could
damage wheel rims and covers.

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VEHICLE STORAGE

If you plan on storing your vehicle for 30
days or more, read the following
maintenance recommendations to make sure
your vehicle stays in good operating
condition.

We engineer and test all motor vehicles and
their components for reliable, regular driving.
Under various conditions, long-term storage
may lead to degraded engine performance
or failure unless you use specific precautions
to preserve engine components.

General

•

Store all vehicles in a dry, ventilated
place.

•

Protect from sunlight, if possible.

•

If vehicles are stored outside, they
require regular maintenance to protect
against rust and damage.

Body

•

Wash your vehicle thoroughly to remove
dirt, grease, oil, tar or mud from exterior
surfaces, rear-wheel housing and the
underside of front fenders.

•

Periodically wash your vehicle if it is
stored in exposed locations.

•

Touch-up exposed or primed metal to
prevent rust.

•

Cover chrome and stainless steel parts
with a thick coat of auto wax to prevent
discoloration. Re-wax as necessary when
you wash your vehicle.

•

Lubricate all hood, door and luggage
compartment hinges and latches with a
light grade oil.

•

Cover interior trim to prevent fading.

•

Keep all rubber parts free from oil and
solvents.

Engine

•

Change the engine oil and filter prior to
storage because used engine oil contains
contaminates which may cause engine
damage.

•

Start the engine every 15 days for a
minimum of 15 minutes. Run at fast idle
with the climate controls set to defrost
until the engine reaches normal
operating temperature.

•

With your foot on the brake, shift through
all the gears while the engine is running.

•

We recommend that you change the
engine oil before you use your vehicle
again.

Fuel system

•

Fill the fuel tank with high-quality fuel
until the first automatic shutoff of the fuel
pump nozzle.

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Cooling system

•

Protect against freezing temperatures.

•

When removing your vehicle from
storage, check coolant fluid level.
Confirm that there are no cooling system
leaks and that fluid is at the
recommended level.

Battery

•

Check and recharge as necessary. Keep
connections clean.

•

If storing your vehicle for more than 30
days without recharging the battery, we
recommend that you disconnect the
battery cables to maintain battery charge
for quick starting.

Note: It is necessary to reset memory
features if battery cables are disconnected.

Brakes

•

Make sure the brakes and parking brake
release fully.

Tires

•

Maintain recommended air pressure.

Miscellaneous

•

Make sure all linkages, cables, levers and
pins under your vehicle are covered with
grease to prevent rust.

•

Move vehicles at least 25 ft (7.5 m) every
15 days to lubricate working parts and
prevent corrosion.

Removing Vehicle From Storage

When your vehicle is ready to come out of
storage, do the following:
•

Wash your vehicle to remove any dirt or
grease film build-up on window surfaces.

•

Check windshield wipers for any
deterioration.

•

Check under the hood for any foreign
material that may have collected during
storage such as mice or squirrel nests.

•

Check the exhaust for any foreign
material that may have collected during
storage.

•

Check tire pressures and set tire inflation
per the Tire Label.

•

Check brake pedal operation. Drive your
vehicle 15 ft (4.5 m) back and forth to
remove rust build-up.

•

Check fluid levels (including coolant, oil
and gas) to make sure there are no leaks,
and fluids are at recommended levels.

•

If you remove the battery, clean the
battery cable ends and check for
damage.

Contact an authorized dealer if you have any
concerns or issues.

BODY STYLING KITS

The distance between the underside of your
vehicle and the ground is less than that of
other models. Drive with extreme care to
avoid damage to your vehicle.

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GENERAL INFORMATION

The recommended tire inflation pressures
are found on the Tire Label which is located
on the B-pillar or the edge of the driver door.
This information can also be found on the
Safety Compliance Certification Label, affixed
to either the door hinge pillar, door-latch
post, or the door edge that meets the
door-latch post; next to the driver’s seating
position.

We strongly recommend maintaining these
tire pressures at all times. Failure to follow
the tire pressure recommendations can
cause uneven treadwear patterns, reduced
fuel economy, and adversely affect the way
your vehicle handles.

Note: Check and set the tire pressure at the
ambient temperature in which you are
intending to drive your vehicle and when the
tires are cold.

Note: Check your tire pressures at least once
per month.

If your vehicle has a spare tire, set the
pressure to the highest value given for your
vehicle and tire size combination.

Use only approved wheels and tire sizes,
using other sizes could damage your vehicle.

If you change the diameter of the factory
installed tires, the speedometer may not
display the correct speed. Take your vehicle
to an authorized dealer and have the engine
management system reprogrammed.

If you intend to change the size of the factory
installed tires, check the suitability with an
authorized dealer.

Additional information related to the
functionality and maintenance of your tires
can be found in the Wheels and Tire section.
See Tire Care (page 356).

Notice to utility vehicle and truck
owners

WARNING: Vehicles with a higher

center of gravity (utility and four-wheel
drive vehicles) handle differently than
vehicles with a lower center of gravity
(passenger cars). Avoid sharp turns,
excessive speed and abrupt steering in
these vehicles. Failure to drive cautiously
increases the risk of losing control of your
vehicle, vehicle rollover, personal injury
and death.

WARNING: In a rollover crash, an

unbelted person is significantly more likely
to die than a person wearing a seatbelt.

Utility vehicles and trucks handle differently
than passenger cars in the various driving
conditions that are encountered on streets,
highways and off-road. Utility vehicles and
trucks are not designed for cornering at
speeds as high as passenger cars any more
than low-slung sports cars are designed to
perform satisfactorily under off-road
conditions.

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Wheels and Tires

Study your owner's instruction and any
supplements for specific information about
equipment features, instructions for safe
driving and additional precautions to reduce
the risk of an accident or serious injury.

All-wheel drive system (if equipped)

WARNING: Do not become

overconfident in the ability of four-wheel
drive vehicles. Although a four-wheel drive
vehicle may accelerate better than a
two-wheel drive vehicle in low traction
situations, it won't stop any faster than
two-wheel drive vehicles. Always drive at
a safe speed.

A vehicle equipped with all-wheel drive has
the ability to use all four wheels to power
itself. This increases traction which may
enable you to safely drive over terrain and
road conditions that a conventional
two-wheel drive vehicle cannot.

For all-wheel-drive vehicles, a spare tire of
a different size other than the tire provided
should never be used. A dissimilar spare tire
size; other than the spare tire provided or
major dissimilar tire sized between the front
and rear axles could cause the
all-wheel-drive system to stop functioning
and default to front-wheel drive.

How your vehicle differs from other
vehicles

Sport utility vehicles and trucks can differ
from some other vehicles in a few noticeable
ways. Your vehicle may be:

•

Higher - to allow higher load carrying
capacity and to allow it to travel over
rough terrain without getting hung up or
damaging underbody components.

•

Shorter - to give it the capability to
approach inclines and drive over the
crest of a hill without getting hung up or
damaging underbody components. All
other things held equal, a shorter
wheelbase may make your vehicle
quicker to respond to steering inputs
than a vehicle with a longer wheelbase.

•

Narrower - to provide greater
maneuverability in tight spaces,
particularly in off-road use.

As a result of the above dimensional
differences, Sport utility vehicles and trucks
often have a higher center of gravity and a
greater difference in center of gravity
between the loaded and unloaded condition.
These differences that make your vehicle so
versatile also make it handle differently than
an ordinary passenger car.

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TIRE SEALANT AND INFLATOR KIT

(IF EQUIPPED)

Note: The temporary mobility kit contains
enough sealant compound in the canister
for one tire repair only. See your authorized
dealer for replacement sealant canisters.

The kit is under the load floor in the cargo
area. The kit consists of an air compressor
to re-inflate the tire and a canister of sealing
compound that effectively seals most
punctures caused by nails or similar objects.
This kit provides a temporary tire repair,
allowing you to drive your vehicle up to
120 mi (200 km) at a maximum speed of
50 mph (80 km/h) to reach a tire service
location.

E175977

Air compressor (inside).

A

Selector switch.

B

On and off button.

C

Air pressure gauge.

D

Sealant bottle and canister.

E

Dual purpose hose: air and repair.

F

Tire valve connector.

G

Accessory power plug.

H

Casing/housing.

I

Bike/raft/sports ball adapters.

J

General Information

WARNING: Failure to follow these

guidelines could result in an increased risk
of loss of vehicle control, injury or death.

Note: Do not use the kit if you have severely
damaged a tire. Only seal punctures within
the tire tread with the kit.

Do not attempt to repair punctures larger
than ¼ inch (6 millimeters) or damage to the
tire's sidewall. The tire may not completely
seal.

Loss of air pressure may adversely affect tire
performance. For this reason:

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Note: Do not drive the vehicle above 50 mph
(80 km/h).

Note: Do not drive further than 120 mi
(200 km). Drive only to the closest authorized
dealer or tire repair shop to have your tire
inspected.

•

Drive carefully and avoid abrupt steering
maneuvers.

•

Periodically monitor tire inflation pressure
in the affected tire; if the tire is losing
pressure, have the vehicle towed.

•

Read the information in the Tips for Use
of the Kit section to make sure safe
operation of the kit and your vehicle.

Tips for Use of the Kit

To ensure safe operation of the kit:

•

Read all instructions and cautions fully.

•

Before operating the kit, make sure your
vehicle is safely off the road and away
from moving traffic. Switch on the hazard
lights.

•

Always set the parking brake to ensure
the vehicle does not move unexpectedly.

•

Do not remove any foreign objects, such
as nails or screws, from the tire.

•

When using the kit, leave the engine
running (only if the vehicle is outdoors or
in a well-ventilated area) so the
compressor does not drain the vehicle's
battery.

•

Do not allow the compressor to operate
continuously for more than 15 minutes.
This will help prevent the compressor
from overheating.

•

Never leave the kit unattended during
operation.

•

Sealant compound contains latex. Those
with latex sensitivities should use
appropriate precautions to avoid an
allergic reaction.

•

Keep the kit away from children.

•

Only use the kit when the ambient
temperature is between -22°F (-30°C) and
158°F (70°C).

•

Only use the sealing compound before
the use-by date. The use-by date is on a
label on the sealant canister, which you
can see through the rectangular viewing
window on the bottom of the compressor.
Check the use-by date regularly and
replace the canister when the sealant
expires.

•

Do not store the kit unsecured inside the
passenger compartment of the vehicle
as it may cause injury during a sudden
stop or crash. Always store the kit in its
original location.

•

After sealant use, an authorized dealer
must replace the tire pressure monitoring
system sensor and valve stem on the
wheel.

•

Operating the kit could cause an
electrical disturbance in radio, CD and
DVD player operation.

E175978

* When inflation only is required for
a tire or other objects, the selector
must be in the Air position.

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What to do When a Tire Is Punctured

You can repair a tire puncture within the tire's
tread area in two stages with the kit.

•

In the first stage, inflate the tire with a
sealing compound and air. After you
inflate the tire, you will need to drive the
vehicle a short distance 4 mi (6 km) to
distribute the sealant in the tire.

•

In the second stage, check the tire
pressure and adjust, if necessary, to the
vehicle's specified tire inflation pressure.

First Stage: Inflating the Tire with
Sealing Compound and Air

WARNING: Do not stand directly over

the kit while inflating the tire. If you notice
any unusual bulges or deformations in the
tire's sidewall during inflation, stop and call
roadside assistance.

WARNING: If the tire does not inflate

to the recommended tire pressure within
15 minutes, stop and call roadside
assistance.

WARNING: Do not run the engine

when operating the air compressor unless
the vehicle is outdoors or in a
well-ventilated area.

Preparation: Park the vehicle in a safe, level
and secure area, away from moving traffic.

Switch the hazard lights on. Apply the
parking brake and switch the engine off.
Inspect the flat tire for visible damage.

Sealant compound contains latex. Use
appropriate precautions to avoid any allergic
reactions.

Do not remove any foreign object that has
pierced the tire. If a puncture is in the tire
sidewall, stop and call roadside assistance.

1. Remove the valve cap from the tire valve.

2. Unwrap the dual purpose hose (black

tube) from the back of the compressor
housing.

3. Fasten the hose to the tire valve by

turning the connector clockwise. Tighten
the connection securely.

E200523

4. Plug the power cable into the 12-volt

power point in the vehicle.

5. Remove the warning sticker found on the

casing/housing and place it on the top of
the instrument panel or the center of the
dash.

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6. Start the vehicle and leave the engine

running so the compressor does not
drain the vehicle’s battery.

E175981

7. Turn dial (A) clockwise to the sealant

position. Switch the kit on by pressing
the on/off button (B).

8. Inflate the tire to the pressure listed on

the tire label on the driver's door or the
door jamb area. The initial air pressure
gauge reading may indicate a value
higher than the label pressure while you
pump the sealing compound into the tire.
This is normal and should be no reason
for concern. The pressure gauge reading
will indicate the tire inflation pressure
after about 30 seconds of operation. You
should check the final tire pressure with
the compressor turned OFF in order to
get an accurate pressure reading.

E175982

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Wheels and Tires

9. When the tire reaches the recommended

tire pressure, switch off the kit, unplug
the power cable, and disconnect the
hose from the tire valve. Re-install the
valve cap on the tire valve and return the
kit to the stowage area.

10.

Immediately and cautiously, drive the
vehicle 4 mi (6 km) to distribute the
sealant evenly inside the tire. Do not
exceed 50 mph (80 km/h).

11.

After 4 mi (6 km), stop and check the
tire pressure. See Second Stage:
Checking Tire Pressure.

Note: If you experience any unusual
vibration, ride disturbance or noise while
driving, reduce your speed until you can
safely pull off to the side of the road to call
for roadside assistance. Note: Do not
proceed to the second stage of this
operation.

Second Stage: Checking Tire Pressure

Note: If you are proceeding from the First
Stage: Re-inflating the Tire with Sealing
Compound and Air section and have injected
sealant in the tire and the pressure is below
20 psi (1.4 bar), continue to the next step.

WARNING: The power plug may get

hot after use and should be handled
carefully when unplugging.

Check the air pressure of your tires as
follows:

E175983

1. Remove the valve cap from the tire valve.

2. Firmly screw the air compressor hose

onto the valve stem by turning clockwise.

3. Push and turn the dial clockwise to the

air position.

4. If required, switch on the compressor and

adjust the tire to the recommended
inflation pressure shown on the tire label
on the driver's door or door jamb area.
You should check the tire pressure with
the compressor turned OFF in order to
get an accurate pressure reading.

5. Unplug the hoses, re-install the valve cap

on the tire and return the kit to the
stowage area.

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Wheels and Tires

What to Do After the Tire Has Been
Sealed

After using the kit to seal your tire, you will
need to replace the sealant canister. You
can obtain sealant canisters and spare parts
at an authorized dealer. You can dispose of
empty sealant canisters at home. However,
you should dispose of canisters still
containing liquid sealant through your local
authorized dealer or tire dealer, or in
accordance with local waste disposal
regulation.

Note: After you use the sealing compound,
the maximum vehicle speed is 50 mph
(80 km/h) and the maximum driving distance
is 120 mi (200 km). You should inspect the
sealed tire immediately.

You can check the tire pressure any time
within the 120 mi (200 km) by performing the
steps listed previously in the Second Stage:
Checking Tire Pressure procedure.

Removal of the sealant canister from the
kit

E175984

1. Unwrap the dual purpose hose (black

tube) from the compressor housing.

E175985

2. Unwrap the power cord.

E175986

3. Remove the back cover.

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E175987

4. Rotate the sealant canister up 90

degrees and pull away from
casing/housing to remove.

Installation of the sealant canister to the
kit

1. With the canister held perpendicular to

the housing, insert the canister nozzle
into the connector and push until seated.

2. Rotate the canister 90 degrees down into

the housing/casing.

E175988

3. Snap the back cover back into place.

E175989

4. Wrap the dual purpose hose (black tube)

around the channel on the bottom of the
housing/casing.

E175990

5. Wrap the power cord around the housing

and stow the accessory power plug into
its storage area.

Note: If you experience any difficulties with
the removal or installation of the sealant
canister, consult an authorized dealer for
assistance.

Make sure you check the sealant
compound’s use-by date regularly. The
use-by date is on a label on the sealant
canister, which you can see through the
rectangular viewing window on the bottom
of the kit. Replace the sealant canister when
the sealant expires.

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Wheels and Tires

TIRE CARE

Important Information About Low-
Profile Tires

If your vehicle has 265/40R21 tires, they
are low-profile tires. These tires and
wheels give your vehicle a sport
appearance. With low-profile tires, you
may notice an increase in road noise
and faster tire wear, depending on road
conditions and driving styles. Due to
their design, low-profile tires and wheels
are more prone to road damage from
potholes, rough or unpaved roads, car
wash rails and curb contact than
standard tires and wheels.

Note: Your vehicle's warranty does not
cover these types of damages. Take
extra caution when driving on rough
roads to avoid impacts that could cause
wheel and tire damage.

Important Information About Sport
Tires and Wheels

The design of the optional 265/40R21
tires enhances the performance of your
vehicle. To continue providing this
performance, you must take extra care
when operating and maintaining your
vehicle.

These low-profile high-performance tires
optimize the driving dynamics you
expect in a sport vehicle in both dry and
wet conditions. These tires are not
optimized for off-road or winter (snow
or cold weather) performance, and their
ride, noise, and wear characteristics are
different than non-performance tires.
With low-profile tires, you may notice an
increase in road noise and faster wear,
depending on road conditions and
driving habits. Also, because of their
lower profile, the tires are more
susceptible to road damage from
potholes, rough or unpaved roads, car
wash rails, and curb contact than
standard tires and wheels.

Note: Your vehicle’s warranty does not
cover these types of damages. Take
extra caution when driving on rough
roads to avoid impacts that could cause
wheel and tire damage.

The optional 265/40R21 tires are for
track use and may exhibit significantly
reduced tread life and increased tire
noise compared to the standard
equipment tires under normal driving
conditions. Increasing the front camber
settings beyond the factory settings may
further accelerate tread wear and induce
tire noise.

Note: Do not use tire chains on your
vehicle’s optional 265/40R21 tires and
wheels. The use of any type of tire chain
on these tires may damage your vehicle.
See Using Snow Chains (page 371).

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Wheels and Tires

Notice to Crossover Vehicle Owners

Crossover vehicles handle differently
than passenger cars in the various
driving conditions that you encountered
on streets, highways and off-road.
Crossover vehicles are not designed for
cornering at speeds as high as
passenger cars any more than low-slung
sports cars are designed to perform
satisfactorily under off-road conditions.
Crossover vehicles have a significantly
higher rollover rate than other types of
vehicles. To reduce this risk of serious
injury or death from a rollover or other
crash you must:
•

Avoid sharp turns and abrupt
maneuvers.

•

Drive at safe speeds for the
conditions.

•

Keep tires properly inflated.

•

Never overload or improperly load
your vehicle.

•

Make sure every passenger is
properly restrained.

WARNING: In a rollover crash, an

unbelted person is significantly more
likely to die than a person wearing a
seatbelt.

Information About Uniform Tire Quality
Grading

E142542

Tire Quality Grades apply to new
pneumatic passenger car tires. The Tire
Quality Grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example: Treadwear 200
Traction AA Temperature A.

These Tire Quality Grades are
determined by standards that the United
States Department of Transportation has
set.

Tire Quality Grades apply to new
pneumatic passenger car tires. They do
not apply to deep tread, winter-type
snow tires, space-saver or temporary
use spare tires, light truck or LT type
tires, tires with nominal rim diameters of
10 to 12 inches or limited production tires
as defined in Title 49 Code of Federal
Regulations Part 575.104 (c)(2).

U.S. Department of Transportation Tire
quality grades: The U.S. Department of
Transportation requires Ford Motor
Company to give you the following
information about tire grades exactly as
the government has written it.

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Wheels and Tires

Treadwear

The treadwear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course.
For example, a tire graded 150 would
wear 1 ½ times as well on the
government course as a tire graded 100.
The relative performance of tires
depends upon the actual conditions of
their use, however, and may depart
significantly from the norm due to
variations in driving habits, service
practices, and differences in road
characteristics and climate.

Traction AA A B C

WARNING: The traction grade

assigned to this tire is based on
straight-ahead braking traction tests,
and does not include acceleration,
cornering, hydroplaning or peak
traction characteristics.

The traction grades, from highest to
lowest are AA, A, B, and C. The grades
represent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete. A tire

marked C may have poor traction
performance.

Temperature A B C

WARNING: The temperature

grade for this tire is established for a
tire that is properly inflated and not
overloaded. Excessive speed,
underinflation, or excessive loading,
either separately or in combination,
can cause heat buildup and possible
tire failure.

The temperature grades are A (the
highest), B and C, representing the tire’s
resistance to the generation of heat and
its ability to dissipate heat when tested
under controlled conditions on a
specified indoor laboratory test wheel.
Sustained high temperature can cause

the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. The grade C corresponds to a
level of performance which all
passenger car tires must meet under the

Federal Motor Vehicle Safety Standard
No. 139. Grades B and A represent
higher levels of performance on the
laboratory test wheel than the minimum
required by law.

Glossary of Tire Terminology

*Tire label: A label showing the original
equipment tire sizes, recommended
inflation pressure and the maximum
weight the vehicle can carry.

*Tire Identification Number (TIN): A
number on the sidewall of each tire
providing information about the tire
brand and manufacturing plant, tire size
and date of manufacture. Also referred
to as DOT code.

*Inflation pressure: A measure of the
amount of air in a tire.

358

Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 201806, Third-Printing-

Wheels and Tires