2008 TOYOTA MATRIX Owners Manual

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Ti r e relat ed ter mMeaning
Innerliner separationthe parting of the innerliner from cord material in the carcass
Intended outboard sidewall
(A) the sidewall that contains a whitewall, bears white lettering or bearsmanufacturer, brand, and/or model name molding that is higher or
deeper than the same molding on th e other sidewall of the tire, or
(B) the outward facing sidewall of an asymmetrical tire that has a particular side that must always face outward when mounted on a vehicle
Light truck (LT) tirea tire designated by its manufacturer as primarily intended for use on lightweight
trucks or multipurpose passenger vehicles
Load ratingthe maximum load that a tire is rated to carry for a given inf lat ion pr es s ur e
Maximum load ratingthe load rating for a tire at the maximu m permissible inflation pressure for that
tire
Maximum permissible inflation
pressurethe maximum cold inflat ion pressure to which a tire may be inflated
Measuring rimthe rim on which a tire is fitted for physical dimension requirements
Open spliceany parting at any junction of tread, sidewall, or innerliner that extends to cord
material
Outer diameterthe overall diameter of an inflated new tire
Overall widththe linear distance between the exteriors of the sidewalls of an inflated tire,
including elevations due to labeling, decorations, or protective bands or ribs

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Ti r e relat ed ter mMeaning
Passenger car tire
a tire intended for use on passenger cars, multipurpose passenger vehicles,
and trucks, that have a gross vehicle weight rating (GVWR) of 10,000 lb. or
less.
Plya layer of rubber−coated parallel cords
Ply separationa parting of rubber compound between adjacent plies
Pneumatic tire
a mechanical device made of rubber, chemicals, fabric and steel or other mate-
rials, that, when mounted on an automotive wheel, provides the traction and
contains the gas or fluid that sustains the load
Radial ply tirea pneumatic tire in which the ply cords that extend to the beads are laid at
substantially 90 degrees to the centerline of the tread
Reinforced tirea tire designed to operate at higher loads and at higher inflation pressures
than the corresponding standard tire
S ec t ion widt hthe linear distance between the exteriors of the sidewalls of an inflated tire,
excluding elevations due to labeling, decoration, or protective bands
Sidewallthat portion of a tire between the tread and bead
Sidewall separationthe parting of the rubber compound from the cord material in the sidewall
Snow tire
a tire that attains a traction index equal to or greater than 110, compared to
the ASTM −E 1136 Standard Reference Test Tire, when using the snow traction
test as described in ASTM F −1805 −00, Standard Test Method for Signal Wheel
Driving Traction in a Straight Line on Snow −and Ice −Cov er ed Sur f ac es , and
which is marked with an Alpine Sym bol ( ) on at least one sidewall

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Ti r e relat ed ter mMeaning
Te s t r i mthe rim on which a tire is fitted for testing, and may be any rim listed as appropri-
ate for use with that tire
Treadthat portion of a tire that comes into contact with the road
Tread riba tread section running circumferentially around a tire
Tread separationpulling 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
Wheel−holding fixturethe fixture used to hold the wheel and tire assembly securely during testing
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 occupantsOccupant distribution in a normallyloaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
11 through 1552 in front, 1 in second seat, 1 in third
seat, 1 in fourth seat
16 through 2072 in front, 2 in second seat, 2 in third
seat, 1 in fourth seat

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Vehicle load limits include total load
capacity, seating capacity, towing ca-
pacity and cargo capacity. Follow the
load limits shown below. Total load ca-
pacity and seating capacity are also
described on the tire and loading in-
formation label. For location of the tire
and loading information label, see
“Checking tire inflat ion pr es s ur e” on
page 280.
Total load capacity:
385 kg (850 Ib.)
Total load capacity means combined
weight of occupants, cargo and lug-
gage. Tongue load is included when
trailer towing.
Seating capacity: Total 5 (Front 2, Rear 3)
Seating capacity means the maximum
number of occupants whose esti-
mated average weight is 68 kg (150
lb.) per person. Depending on the
weight of each person, the seating ca-
pacity given may exceed the total
load capacity.NOTICE
Even if the number of occupants are
within the seating capacity, do not ex-
ceed the total load capacity.
Towing capacity: 680 kg (1500 Ib.)
Towing capacity means the maximum
gross trailer weight (trailer weight plus
its cargo weight) that your vehicle is
able to tow.
Cargo capacity:
Cargo capacity may increase or de-
crease depending on the size (weight)
and the number of occupants. For de-
tails, see “Capacity and distribution”
that follows.
CAUTION
Do not apply the load more than
each load limit. That may cause
not only damage to the tires, but
also deterioration to the steering
ability and braking ability, which
may cause an accident.
Veh icle lo ad limit s

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When stowing cargo and luggage in
the vehicle, observe the following: Put cargo and luggage in the lug-
gage compartment when at all
possible. Be sure all items are se-
cured in place.
 Be careful to keep the vehicle bal-
anced. Locating the weight as far
forward as possible helps maintain
balance.
 For better fuel economy, do not
carry unneeded weight.
CAUTION
When the rear seatbacks are in
the upright position—
To prevent cargo and l uggage
from sliding forward during
braking, do not stack anything
in the luggage compartment
higher than the seatbacks.
Keep cargo and luggage low,
as close to the floor as pos-
sible.
When the rear seatbacks are
folded down—
To prevent cargo and l ugga-
ge from sliding forward dur-
ing braking, do not stack
anything in the enlarged lug-
gage compartment. Keep car-
go and luggage low, as close
to the floor as possible.
 Never allow anyone to ride in
the luggage compartment. It is
not designed for passengers.
They should ride in their seats
with their seat belts properly
fastened. Otherwise, they are
much more likely to suffer
death or serious bodily injury,
in the event of sudden braking
or a collision.Do not place anything on the
luggage cover. Such items may
be thrown about and possibly
injure people in the vehicle
during sudden braking or an
accident. Secure all items in a
safe place.
 Do not drive with objects left
on top of the instrument panel.
They may interfere with the
driver’s field of view. Or they
may move during sharp vehicle
acceleration or turning, and im-
pair the driver’s control of the
vehicle. In an accident they
may injure the vehicle occu-
pants.
Cargo and luggage—
—Stowage precautions

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Cargo capacity depends on the to-
tal weight of the occupants.
(Cargo capacity) = (Total load capac-
ity) – (Total weight of occupants)
Steps for Determining Correct
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 ve-
hicle, the amount of available
cargo and luggage load capacity
is 650 lbs. (1400–750
(5x150)=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 calculated 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 vehicle.
For details about trailer towing, see
page 222.
Cargo
capacity
Total load
capacity
Example on Your Vehicle
In case that 2 people with the com-
bined weight of 166 kg (366 lb.) are
riding in your vehicle with the total
load capacity of 385 kg (850 lb.), the
available amount of cargo and lug-
gage load capacity will be as follows:
385 kg – 166 kg = 219 kg.
( 850 lb. – 366 lb. = 484 lb. )
From this condition, if 3 more passen-
gers with the combined weight of 176
kg (388 lb.) get on , the av ailable car-
go and luggage load will be reduced
as follows:
—Capacity and distribution

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219 kg – 176 kg = 43 kg.
( 484 lb. – 388 lb. = 96 lb. )
As shown in the above example, if the
number of occupants increases, the
cargo and luggage load equaling the
combined weight of occupants who
got on later must be reduced. In other
words, if the increase in the number
of occupants causes the excess of
the total load capacity (combined
weight of occupants plus cargo and
luggage load), you have to reduce the
cargo and luggage on your vehicle.
For details about total load capacity,
see “Vehicle load limits” on page 210.CAUTION
Even if the total load of occu-
pant’s weight and the cargo load
is less than the total load capac-
ity, do not apply the load uneven-
ly. That may cause not only dam-
age to the tire but also deteriora-
tion to the steering ability due to
unbalance of the vehicle, causing
an accident.
Determine what kind of tires your
vehicle is originally equipped with.
1. Summer tires
Summer tires are high −speed capabil-
ity tires best suited to highway driving
under dry conditions.
Since summer tires do not have the
same traction performance as snow
tires, summer tires are inadequate for
driving on snow −covered or icy roads.
For driving on snow −covered or icy
roads, we recommend using snow
tires. If installing snow tires, be sure
to replace all four tires.
2. All season tires
All season tires are designed to pro-
vide better traction in snow and to be
adequate for driving in most winter
conditions, as well as for use all year
round.
Types of tires

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All season tires, however, do not have
adequate traction performance
compared with snow tires in heavy or
loose snow. Also, all season tires fall
short in acceleration and handling
performance compared with summer
tires in highway driving.
The details about how to distinguish
summer tires from all season tires are
described on page 197.
CAUTION
Do not mix summer and all sea-
son tires on your vehicle as
this can cause dangerous han-
dling characteristics, resulting
in loss of control.
 Do not use tire other than the
manufacturer’s designated
tires, and never mix tires or
wheels of the sizes different
from the originals.