Subaru Ascent (2019 year). Instruction - part 32

(500,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

13-1. For U.S.A.

The following information has been
compiled according to Code of
Federal Regulations “Title 49, Part
575”.

13-2. Tire information

&

Tire labeling

Many markings (e.g. Tire size, Tire
Identification Number or TIN) are
placed on the sidewall of a tire by
tire manufacturers. These markings
can provide you with useful infor-
mation on the tire.

!

Tire size

Your vehicle comes equipped with
P-Metric tire size. It is important to
understand the sizing system in
selecting the proper tire for your
vehicles. Here is a brief review of
the tire sizing system with a break-
down of its individual elements.

!

P Metric

With the P-Metric system, Section
Width is measured in millimeters.
To convert millimeters into inches,
divide by 25.4. The Aspect Ratio
(Section Height divided by Section
Width) helps provide more dimen-
sional information about the tire
size.

Example:

(1)

P = Certain tire type used on

light duty vehicles such as passen-
ger cars
(2)

Section Width in millimeters

(3)

Aspect Ratio (= section height

7

section width).

(4)

R = Radial Construction

(5)

Rim diameter in inches

!

Load and Speed Rating
Descriptions

The load and speed rating descrip-
tions will appear following the size
designation.
They provide two important facts
about the tire. First, the number
designation is its load index. Sec-
ond, the letter designation indicates
the tire’s speed rating.

For U.S.A.

498

(501,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

Example:

(6)

Load Index: A numerical code

which specifies the maximum load
a tire can carry at the speed
indicated by its speed symbol, at
maximum inflation pressure.

For example, “90” means 1,323 lbs
(600 kg), “89” means 1,278 lbs (580
kg).

WARNING

Load indices apply only to the
tire, not to the vehicle. Putting
a load rated tire on any vehicle
does not mean the vehicle can
be loaded up to the tire’s rated
load.

(7)

Speed Rating: An alphabetical

system describing a tire’s capability
to travel at established and prede-
termined speeds.
For example, “V” means 149 mph
(240 km/h)

WARNING

.

Speed ratings apply only to

the tire, not to the vehicle.
Putting a speed rated tire on
any vehicle does not mean
the vehicle can be operated
at the tire’s rated speed.

.

The speed rating is void if

the tires are worn out, da-
maged, repaired, retreaded,
or otherwise altered from
their original condition. If
t i r e s a r e r e p a i r e d , r e -
treaded, or otherwise al-
tered, they may not be sui-
table for original equipment
tire designed loads and
speeds.

!

Tire Identification Number
(TIN)

Tire Identification Number (TIN) is
marked on the intended outboard
sidewall. The TIN is composed of
four groups. Here is a brief review of
the TIN with a breakdown of its

individual elements.

(1)

Manufacturer’s Identification

Mark
(2)

Tire Size

(3)

Tire Type Code

(4)

Date of Manufacture

The first two figures identify the
week, starting with “01” to represent
the first full week of the calendar
year; the second two figures repre-
sent the year. For example, 0101
means the 1st week of 2001.

!

Other markings

The following makings are also
placed on the sidewall.

!

Maximum permissible infla-
tion pressure

The maximum cold inflation pres-
sure to which this tire may be
inflated. For example, “300 kPa
(44 PSI) MAX. PRESS”

– CONTINUED –

Tire information

499

13

Consumer

information

and

reporting

safety

defects

(502,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

!

Maximum load rating

The load rating at the maximum
permissible weight load for this tire.
For example, “MAX. LOAD 580 kg
(1279 LBS) @ 300 kPa (44 PSI)
MAX. PRESS.”

WARNING

Maximum load rating applies
only to the tire, not to the
vehicle. Putting a load rated
tire on any vehicle does not
mean the vehicle can be
loaded up to the tire’s rated
load.

!

Construction type

Applicable construction of this tire.
For example, “TUBELESS STEEL
BELTED RADIAL”

!

Construction

The generic name of each cord
material used in the plies (both
sidewall and tread area) of this tire.
For example, “PLIES: TREAD 2

STEEL + 2 POLYESTER SIDE-
WALL 2 POLYESTER”

!

Uniform Tire Quality Grad-
ing (UTQG)

For details, refer to “

Uniform tire

quality grading standards” FP510.

&

Recommended tire inflation
pressure

!

Recommended cold tire in-
flation pressure

For recommended cold tire inflation
pressure for your vehicle’s tires,
refer to

Tires” FP486.

!

Vehicle placard

The vehicle placard is attached to
the driver’s side door pillar.

Example:

The vehicle placard shows original
tire size, recommended cold tire
inflation pressure on each tire at
maximum loaded vehicle weight,
seating capacity and loading infor-
mation.

!

Adverse safety conse-
quences of under-inflation

Driving at high speeds with exces-
sively low tire pressures can cause
the tires to flex severely and to
rapidly become hot. A sharp in-

Tire information

500

(503,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

crease in temperature could cause
tread separation, and failure of the
tire(s). Possible resulting loss of
vehicle control could lead to an
accident.

!

Measuring and adjusting air
pressure to achieve proper
inflation

Check and, if necessary, adjust the
pressure of each tire (including the
spare) at least once a month and
before any long journey. Check the
tire pressures when the tires are
cold. Use a pressure gauge to
adjust the tire pressures to the
specific values. Driving even a short
distance warms up the tires and
increases the tire pressures. Also,
the tire pressures are affected by
the outside temperature. It is best to
check tire pressure outdoors before
driving the vehicle. When a tire
becomes warm, the air inside it
expands, causing the tire pressure
to increase. Be careful not to mis-
takenly release air from a warm tire
to reduce its pressure.

&

Glossary of tire terminology

.

Accessory weight

The combined weight (in excess of
those standard items which may be
replaced) of automatic transmis-
sion, power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not).

.

Bead

The part of the tire that is made of
steel wires, wrapped or reinforced
by ply cords and that is shaped to fit
the rim.

.

Bead separation

A breakdown of the bond between
components in the bead.

.

Bias ply tire

A pneumatic tire in which the ply
cords that extend to the beads are
laid at alternate angles substantially
less than 90 degrees to the center-
line of the tread.

.

Carcass

The tire structure, except tread and

sidewall rubber which, when in-
flated, bears the load.

.

Chunking

The breaking away of pieces of the
tread or sidewall.

.

Cold tire pressure

The pressure in a tire that has been
driven less than 1 mile or has been
standing for three hours or more.

.

Cord

The strands forming the plies in the
tire.

.

Cord separation

The parting of cords from adjacent
rubber compounds.

.

Cracking

Any parting within the tread, side-
wall, or inner liner of the tire
extending to cord material.

.

Curb weight

The weight of a motor vehicle with
standard equipment including the
maximum capacity of fuel, oil and
coolant, and if so equipped, air
conditioning and additional weight
optional engine.

– CONTINUED –

Tire information

501

13

Consumer

information

and

reporting

safety

defects

(504,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

.

Extra load tire

A tire designed to operate at higher
loads and higher inflation pressure
than the corresponding standard
tire.

.

Groove

The space between two adjacent
tread ribs.

.

Innerliner

The layer(s) forming the inside sur-
face of a tubeless tire that contains
the inflating medium within the tire.

.

Innerliner separation

The parting of the innerliner from
cord material in the carcass.

.

Intended outboard sidewall

(1)

The sidewall that contains a

whitewall, bears white lettering
or bears manufacturer, brand,
and/or model name molding that
is higher or deeper than the
same molding on the other side-
wall of the tire, or

(2)

The outward facing sidewall

of an asymmetrical tire that has a
particular side that must always
face outward when mounting on

a vehicle.

.

Light truck (LT) tire

A tire designated by its manufac-
turer as primarily intended for use
on lightweight trucks or multipur-
pose passenger vehicles.

.

Load rating

The maximum load that a tire is
rated to carry for a given inflation
pressure.

.

Maximum inflation pressure

The maximum cold inflation pres-
sure to which a tire may be inflated.

.

Maximum load rating

The load rating for a tire at the
maximum permissible inflation
pressure for that tire.

.

Maximum loaded vehicle weight

The sum of:

(a)

Curb weight

(b)

Accessory weight

(c)

Vehicle capacity weight

(d)

Production options weight

.

Maximum permissible inflation

pressure

The maximum cold inflation pres-
sure to which a tire may be inflated.

.

Measuring rim

The rim on which a tire is fitted for
physical dimension requirements.

.

Normal occupant weight

150 lbs (68 kg) times the number of
occupants specified in the second
column of Table 1 that is appended
to the end of this section.

.

Occupant distribution

Distribution of occupants in a vehi-
cle as specified in the third column
of Table 1 that is appended to the
end of this section.

.

Open splice

Any parting at any junction of tread,
sidewall, or innerliner that extends
to cord material.

.

Outer diameter

The overall diameter of an inflated
new tire.

.

Overall width

The linear distance between the
exteriors of the sidewalls of an
inflated tire, including elevations
due to labeling, decorations, or
protective bands or ribs.

Tire information

502

(505,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

.

Passenger car tire

A tire intended for use on passen-
ger cars, multipurpose passenger
vehicles, and trucks, that have a
gross vehicle weight rating (GVWR)
of 10,000 lbs (4,535 kg) or less.

.

Ply

A layer of rubber-coated parallel
cords.

.

Ply separation

A parting of rubber compound
between adjacent plies.

.

Pneumatic tire

A mechanical device made of rub-
ber, chemicals, fabric and steel or
o t h e r m a t e r i a l s , t h a t , w h e n
mounted on an automotive wheel,
provides the traction and contains
the gas or fluid that sustains the
load.

.

Production options weight

The combined weight of those
installed regular production options
weighing over 5.1 lbs (2.3 kg) in
excess of those standard items
which they replace, not previously
considered in curb weight or acces-

sory weight, including heavy duty
brakes, ride levelers, roof rack,
heavy duty battery, and special trim.

.

Radial ply tire

A pneumatic tire in which the ply
cords that extend to the beads are
laid at substantially 90 degrees to
the centerline of the tread.

.

Recommended inflation pres-

sure

The cold inflation pressure recom-
mended by a vehicle manufacturer.

.

Reinforced tire

A tire designed to operate at higher
loads and at higher inflation pres-
sures than the corresponding stan-
dard tire.

.

Rim

A metal support for a tire or a tire
and tube assembly upon which the
tire beads are seated.

.

Rim diameter

Nominal diameter of the bead seat.

.

Rim size designation

Rim diameter and width.

.

Rim type designation

The industry of manufacturer’s des-
ignation for a rim by style or code.

.

Rim width

Nominal distance between rim
flanges.

.

Section width

The linear distance between the
exteriors of the sidewalls of an
inflated tire, excluding elevations
due to labeling, decoration, or pro-
tective bands.

.

Sidewall

That portion of a tire between the
tread and bead.

.

Sidewall separation

The parting of the rubber compound
from the cord material in the side-
wall.

.

Snow tire

A tire that attains a traction index
equal to or greater than 110, com-
pared to the ASTM E-1136 Stan-
dard Reference Test Tire, when
using the snow traction test as
described in ASTM F-1805-00,
Standard Test Method for Single

– CONTINUED –

Tire information

503

13

Consumer

information

and

reporting

safety

defects

(506,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

Wheel Driving Traction in a Straight
Line on Snow-and Ice-Covered
Surfaces, and which is marked with
an Alpine Symbol “ ” on at least
one sidewall.

.

Test rim

The rim on which a tire is fitted for
testing, and it may be any rim listed
as appropriate for use with that tire.

.

Tread

That portion of a tire that comes into
contact with the road.

.

Tread rib

A tread section running circumfer-
entially around a tire.

.

Tread separation

Pulling away of the tread from the
tire carcass.

.

Treadwear indicators (TWI)

The projections within the principal
grooves designed to give a visual
indication of the degrees of wear of
the tread.

.

Vehicle capacity weight

The rated cargo and luggage load
plus 150 lbs (68 kg) times the
vehicle’s designated seating capa-

city.

.

Vehicle maximum load on the tire

Load on an individual tire that is
determined by distributing to each
axle its share of the maximum
loaded vehicle weight and dividing
by two.

.

Vehicle normal load on the tire

Load on an individual tire that is
determined by distributing to each
axle its share of the curb weight,
accessory weight, and normal oc-
cupant weight (distributed in accor-
dance with Table 1 that is appended
to the end of this section) and
dividing by 2.

.

Wheel-holding fixture

The fixture used to hold the wheel
and tire assembly securely during
testing.

Tire information

504

(507,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

Table 1 — Occupant loading and distribution for vehicle normal load for
various designated seating capacities

Designated seating

capacity, number of

occupants

Vehicle normal load,

number of occupants

Occupant distribution in a

normally loaded vehicle

2 through 4

2

2 in front.

5 through 10

3

2 in front, 1 in second
seat.

11 through 15

5

2 in front, 1 in second
seat, 1 in third seat, 1 in
fourth seat.

16 through 22

7

2 in front, 2 in second
seat, 2 in third seat, 1 in
fourth seat.

– CONTINUED –

Tire information

505

13

Consumer

information

and

reporting

safety

defects

(508,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

&

Tire care – maintenance and
safety practices

.

Check on a daily basis that the

tires are free from serious damage,
nails, and stones. At the same time,
check the tires for abnormal wear.

.

Inspect the tire tread regularly

and replace the tires before their
tread wear indicators become visi-
ble. When a tire’s tread wear in-
dicator becomes visible, the tire is
worn beyond the acceptable limit
and must be replaced immediately.
With a tire in this condition, driving
at even low speeds in wet weather
can cause the vehicle to hydro-
plane. Possible resulting loss of
vehicle control can lead to an
accident.

.

To maximize the life of each tire

and ensure that the tires wear
uniformly, it is best to rotate the
tires every 7,500 miles (12,000 km).
For information about the tire rota-
tion order, refer to

Tire rotation”

FP459.

Replace any damaged or

unevenly worn tires at the time of

rotation. After tire rotation, adjust
the tire pressures and make sure
the wheel nuts are correctly tigh-
tened. For information about the
tightening torque and tightening
sequence for the wheel nuts, refer
to “

Flat tires” FP412.

&

Determining compatibility of
tire and vehicle load capaci-
ties

The sum of four tires’ maximum
load ratings must exceed the max-
imum loaded vehicle weight
(“GVWR”). In addition, sum of the
maximum load ratings of two front
tires and of two rear tires must
exceed each axle’s maximum
loaded capacity (“GAWR”). Original
equipment tires are designed to
fulfill those conditions.
The maximum loaded vehicle
weight is referred to Gross Vehicle
Weight Rating (GVWR). And each
axle’s maximum loaded capacity is
referred to Gross Axle Weight Rat-
ing (GAWR). The GVWR and each

axle’s GAWR are shown on the
vehicle certification label located at
the bottom of driver’s side door
pillar.
The GVWR and front and rear
GAWRs are determined by not only
the maximum load rating of tires but
also loaded capacities of the vehi-
cle’s suspension, axles and other
parts of the body.
Therefore, this means that the
vehicle cannot necessarily be
loaded up to the tire’s maximum
load rating on the tire sidewall.

&

Adverse safety conse-
quences of overloading on
handling and stopping and on
tires

Overloading could affect vehicle
handling, stopping distance, and
vehicle and tire performance in the
following ways. This could lead to
an accident and possibly result in
severe personal injury.

.

Vehicle stability will deteriorate.

.

Heavy and/or high-mounted

Tire information

506

(509,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

loads could increase the risk of
rollover.

.

Stopping distance will increase.

.

Brakes could overheat and fail.

.

Suspension, bearings, axles and

other body parts could break or
experience accelerated wear that
will shorten vehicle life.

.

Tires could fail.

.

Tread separation could occur.

.

Tire could separate from its rim.

&

Steps for Determining Cor-
rect Load Limit

1.

Locate the statement “The com-

bined weight of occupants and
cargo should never exceed XXX
kg or XXX lbs.” on your vehicle’s
placard.

2.

Determine the combined weight

of the driver and passengers that
will be riding in your vehicle.

3.

Subtract the combined weight of

the driver and passengers from
XXX kg or XXX lbs.

4.

The resulting figure equals the

available amount of cargo and

luggage load capacity. For exam-
ple, if the “XXX” amount equals
1400 lbs. and there will be five 150
lb passengers in your vehicle, the
amount of available cargo and
luggage load capacity is 650 lbs.
(1400 − 750 (5 6 150) = 650 lbs.)

5.

Determine the combined weight

of luggage and cargo being loaded
on the vehicle. That weight may not
safely exceed the available cargo
and luggage load capacity calcu-
lated in Step 4.

6.

If your vehicle will be towing a

trailer, load from your trailer will be
transferred to your vehicle. Consult
this manual to determine how this
reduces the available cargo and
luggage load capacity of your ve-
hicle.

13-3. Vehicle load limit – how
to determine

The load capacity of your vehicle is
determined by weight, not by avail-
able cargo space. The load limit of
your vehicle is shown on the vehicle
placard attached to the driver’s side
door pillar. Locate the statement
“The combined weight of occupants
and cargo should never exceed
XXX kg or XXX lbs” on your
vehicle’s placard.
The vehicle placard also shows
seating capacity of your vehicle.
The total load capacity includes the
total weight of driver and all pas-
sengers and their belongings, any
cargo, any optional equipment such
as a trailer hitch, roof rack or bike
carrier, etc., and the tongue load of
a trailer. Therefore cargo capacity
can be calculated by the following
method.

Cargo capacity = Load limit − (total
weight of occupants + total weight

– CONTINUED –

Vehicle load limit – how to determine

507

13

Consumer

information

and

reporting

safety

defects

(510,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

of optional equipment + tongue load
of a trailer (if applicable))

For information about vehicle load-
ing, refer to

Loading your vehicle”

FP386.

&

Calculating total and load
capacities varying seating
configurations

Calculate the available load capa-
city as shown in the following
examples:

Example 1A

Vehicle capacity weight of the ve-
hicle is 900 lbs (408 kg), which is

indicated on the vehicle placard
with the statement “The combined
weight of occupants and cargo
should never exceed 900 lbs or
408 kg”.

For example, if the vehicle has one
occupant weighing 154 lbs (70 kg)
plus cargo weighing 662 lbs (300
kg).

1.

Calculate the total weight.

2.

Calculate the available load ca-

pacity by subtracting the total
weight from the vehicle capacity
weight of 900 lbs (408 kg).

3.

The result of step 2 shows that a

further 84 lbs (38 kg) of cargo can
be carried.

Example 1B

For example, if a person weighing
176 lbs (80 kg) now enters the same
vehicle (bringing the number of
occupants to two), the calculations
are as follows.

1.

Calculate the total weight.

Vehicle load limit – how to determine

508

(511,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

2.

Calculate the available load ca-

pacity.

3.

The total weight now exceeds

the capacity weight by 92 lbs (42
kg), so the cargo weight must be
reduced by 92 lbs (42 kg) or more.

Example 2A

Vehicle capacity weight of the ve-
hicle is 900 lbs (408 kg), which is
indicated on the vehicle placard
with the statement “The combined
weight of occupants and cargo
should never exceed 408 kg or
900 lbs”.

For example, the vehicle has one
occupant weighing 165 lbs (75 kg)
plus cargo weighing 375 lbs (170
kg). In addition, the vehicle is fitted
with a trailer hitch weighing 22 lbs
(10 kg), to which is attached a trailer
weighing 1,764 lbs (800 kg). 10% of
the trailer weight is applied to the

trailer tongue (i.e. Tongue load =
176 lbs (80 kg)).

1.

Calculate the total weight.

2.

Calculate the available load ca-

pacity.

3.

The result of step 2 shows that a

further 162 lbs (73 kg) of cargo can
be carried.

– CONTINUED –

Vehicle load limit – how to determine

509

13

Consumer

information

and

reporting

safety

defects

(512,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

Example 2B

For example, if a person weighing
143 lbs (65 kg) and a child weighing
40 lbs (18 kg) now enter the same
vehicle (bringing the number of
occupants to three), and a child
restraint system weighing 11 lbs (5
kg) is installed in the vehicle for the
child to use, the calculations are as
follows.

1.

Calculate the total weight.

2.

Calculate the available load ca-

pacity.

3.

The total weight now exceeds

the capacity weight by 32 lbs (15
kg), so the cargo weight must be
reduced by 32 lbs (15 kg) or more.

13-4. Uniform tire quality
grading standards

This information indicates the rela-
tive performance of passenger car
tires in the area of treadwear,
traction, and temperature resis-
tance. This is to aid the consumer
in making an informed choice in the
purchase of tires.
Quality grades can be found where
applicable on the tire sidewall be-
tween tread shoulder and maximum
section width.
For example:

TREADWEAR 200 TRACTION AA
TEMPERATURE A

The quality grades apply to new
pneumatic tires for use on passen-
ger cars. However, they do not
apply to deep tread, winter type
snow tires, space-saver or tempor-
ary use spare tires, tires with
nominal rim diameters of 12 inches
or less, or to some limited produc-
tion tires.

Uniform tire quality grading standards

510

(513,1)

北米Model "A3200BE-A" EDITED: 2018/ 3/ 5

All passenger car tires must con-
form to Federal Safety Require-
ments in addition to these grades.

&

TREADWEAR

The treadwear grade is a compara-
tive rating based on the wear rate of
the tire when tested under con-
trolled conditions on a specified
government test course.
For example, a tire graded 150
would wear one and one-half (1-
1/2) times as well on the govern-
ment 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

The traction grades, from highest to
lowest, are AA, A, B and C. Those
grades represent the tire’s ability to
stop on wet pavement as measured

under controlled conditions on spe-
cified government test surfaces of
asphalt and concrete.
A tire marked C may have poor
traction performance.

WARNING

The traction grade assigned to
this tire is based on straight-
ahead braking traction tests,
and does not include accelera-
tion, cornering, hydroplaning,
or peak traction characteris-
tics.

&

TEMPERATURE A, B, C

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 con-
ditions on a specified indoor labora-
tory 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 Stan-
dards No. 109.
Grades B and A represent higher
levels of performance on the la-
boratory test wheel than the mini-
mum required by law.

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.

Uniform tire quality grading standards

511

13

Consumer

information

and

reporting

safety

defects

Рассказать друзьям

Страницы