inflation pressure TOYOTA xD 2011 (in English) User Guide

1806. Maximum cold tire inflation
pressure— This means the pres-
sure to which a tire may be in-
flated. For recommended cold tire
inflation pressure, see “Tires” on
page 284.
7. Tire ply composition and materi- als— Plies mean a layer of rubber −
coated parallel cords. Cords mean
the strands forming the plies in the
tire.
8. “TUBELESS” or “TUBE TYPE” —A tubeless tire does not have a
tube inside the tire and air is direct-
ly filled in the tire. A tube type tire
has a tube inside the tire and the
tube maintains the air pressure.
9. Radial tires or biasply tires— A
radial tire has “RADIAL” on the
sidewall. A tire not marked with
“RADIAL” is a bias −ply tir e.
21A009a
This illustration indicates typical DOT
and Tire Identification Number (TIN).
1. “DOT” symbol
2. Tire Identification Number (TIN)
3. Tire manufacturer ’s identification mark
4. Tire size code
5. Manufacturer ’s optional tire type code (3 or 4 letters)
6. Manufacturing week
7. Manufacturing year The “DOT” symbol certifies that the
tire conforms to applicable Federal
Motor Vehicle Safety Standards.
—DOT and Tire Identification
Number (TIN)

184Ti r e relat ed ter m
Meaning
Cold tire inflation pressure
tire inflation pressure when the vehicl
e has been parked for at leas t 3 hour s
or more, or it has not been driven more than 1.5 km or 1 mile under that
condition
Maximum inflation pressurethe maximum cold inflation pressure to which a tire may be inflated and it is
shown on the sidewall of the tire
Recommended inflation pressurecold tire inflation pressure recommended by a manufacturer
Accessory weight
the combined weight (in excess of those standard items which may be replaced)
of automatic transmission, power steering, power brakes, power windows, pow-
er seats, radio, and heater, to the extent that these items are available as
factory −installed equipment (whether installed or not)
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 addi-
tional weight optional engine
Maximum loaded vehicle weight
t he sum of —
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight
Normal occupant weight68 kg (150 lb.) times the number of occupants specified in the second column
of Table 1 that follows
—Glossary of tire terminology

186Ti r e relat ed ter m
Meaning
Weather sidethe surface area of the rim no
t covered by the inflated tire
Beadthe 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 separationa breakdown of the bond between components in the bead
Bias ply tirea pneumatic tire in which the ply cords that extend to the beads are laid at
alternate angles substantially less than 90 degrees to the centerline of the tread
Carcassthe tire structure, except tread and sidewall rubber which, when inflated, bears
the load
Chunkingthe breaking away of pieces of the tread or sidewall
Cordthe strands forming the plies in the tire
Cord separationthe parting of cords from adjacent rubber compounds
Crackingany parting within the tread, sidewall, or innerliner of the tire extending to cord
material
CT
a pneumatic tire with an inverted flange tire and rim system in which the rim
is designed with rim flanges pointed radi ally inward and the tire is designed
to fit on the underside of the rim in a manner that encloses the rim flanges
inside the air cavity of the tire
Extra load tirea tire designed to operate at higher loads and at higher inflation pressures
than the corresponding standard tire

187
Ti r e relat ed ter m
Meaning
Groovethe space between two adjacent tread ribs
Innerlinerthe layer(s) forming the inside surface of a tubeless tire that contains the inflat-
ing medium within the tire
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 bears
manufacturer, brand, and/or model name molding that is higher or deeper
than the same molding on the 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 pres-
surethe 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

188Ti r e relat ed ter m
Meaning
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
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

204
NOTICE
Do not tow your vehicle from the
rear. This may cause serious damage
to your vehicle.
Trailer towing
Scion does not recommend towing a
trailer with your vehicle. Scion also
does not recommend the installation of
a tow hitch or the use of a tow hitch
carrier for a wheelchair, scooter, bi-
cycle, etc. Your Scion is not designed
for trailer towing or for the use of tow
hitch mounted carriers.Improving fuel economy is easy–just take
it easy. It will help make your vehicle last
longer, too. Here are some specific tips
on how to save money on both fuel and
repairs:
Keep your tires inflated at the cor-
rect pressure.
Underinflation causes
tire wear and wastes fuel. See page
260 for instructions.
Do not carry unneeded weight in
your vehicle. Excess weight puts a
heavier load on the engine, causing
greater fuel consumption.
Avoid lengthy warmup idling. Once
the engine is running smoothly, begin
driving—but gently. Remember, howev-
er, that on cold winter days this may
take a little longer.
Keep the automatic transmission
overdrive turned on when engine
braking is not required. Driving with
the overdrive off will reduce the fuel
economy. (For details, see “Automatic
transmission” on page 125.)
Accelerate slowly and smoothly.
Avoid jackrabbit starts. Get into high
gear as quickly as possible.
How to save fuel and make
your vehicle last longer

245
Tire inflation pressure
Check the pressure with a gauge ev-
ery two weeks, or at least once a
month. See page 260 for additional
information.
Tire surface and wheel nuts
Check the tires carefully for cuts,
damage or excessive wear. See page
262 for additional information. When
checking the tires, make sure no nuts
are missing, and check the nuts for
looseness. Tighten them if necessary.
Tire rotation
Rotate the tires
according to the
maintenance schedule. (For sched-
uled maintenance information, please
refer to the “Scheduled Maintenance
Guide” or “Owner ’s Manual Supple-
ment”.) See page 264 for additional
information.
Be on the alert for changes in perfor-
mance, sounds, and visual tip −offs that
indicate service is needed. Some impor-
tant clues are as follows:
Engine missing, stumbling, or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (however,
water dripping from the air conditioning
after use is normal.)
Change in exhaust sound (This may
indicate a dangerous carbon monoxide
leak. Drive with the windows open and
have the exhaust system checked im-
mediately.)
Flat −looking tire; excessive tire squeal
when cornering; uneven tire wear
Vehicle pulls to one side when driving
straight on a level road
Strange noises related to suspension
movement
Loss of brake effectiveness; spongy
feeling brake or clutch pedal; pedal al-
most touches floor; vehicle pulls to one
side when braking
Engine coolant temperature continually
higher than normal If you notice any of these clues, take your
vehicle to your Scion dealer as soon as
possible. It probably needs adjustment or
repair.
CAUTION
Do not continue driving with the ve-
hicle unchecked. It could result in se-
rious vehicle damage and possibly
personal injury.
Does your vehicle need
repairing?

255
DOITYOURSELF MAINTENANCE
Engine and Chassis
Checking the engine oil level256
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine coolant level 258
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the radiator and condenser 259
. . . . . . . . . . . . . . . . . . . . . . . . .
Checking brake fluid 259
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . .
Checking tire inflation pressure 260
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing tires 262
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotating tires 264
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . .
Installing snow tires and chains 265
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing wheels 267
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . .
SECTION 7 2

260
Keep your tire inflation pressures
at the proper level.
The recommended cold tire inflation
pressures, tire sizes and the com-
bined weight of occupants and cargo
(vehicle capacity weight) are de-
scribed on page 280 and 284. They
are also described on the tire and
loading information label as shown.
You should check the tire inflation
pressures every two weeks, or at
least once a month. And do not forget
the spare!
The following instructions for
checking tire inflation pressure
should be observed:
 The pressure s hould be
checked only when the tires are
cold. If your vehicle has been
parked for at least 3 hours and has
not been driven for more than 1.5
km or 1 mile since, you will get
an accurate cold tire inflation pres-
sure reading. 
Always use a tire pressure
gauge. The appearance of a tire
can be misleading. Besides, tire
inflation pressures that are even
just a few pounds off can degrade
ride and handling.
 Take special care when adding
air to the compact spare tire.
The smaller tire size can gain
pressure very qu ickly. Add com-
pressed air in small quantities and
check the pressure often until it
reaches the specified pressure.
 Do not bleed or reduce tire
inflation pressure after driving.
It is normal for the tire inflation
pressure to be higher after driving.
 Never exceed the vehicle capac-
ity weight. Passenger and lug-
gage weight should be located so
that the vehicle is balanced.
Checking tire inflation
pressure

261
Tire pressure gauge
INSPECTION AND ADJUSTMENT
PROCEDURE
1. Remove the tire valve cap.
2. Press the tip of the tire pressure
gauge to the tire valve.
3. Read the pressure using the grad- uations of the gauge.
4. In case the tire inflation pressure
is not within the prescribed range,
insert the compressed air from the
valve. In case of applying too much
air, press the center of the valve
and release the air to adjust. 5. After completing the tire inflation
pressure measurement and adjust-
ment, apply soapy water to the
valve and check for leakage.
6. Install the tire valve cap. If a gauge and air pump are not avail-
able, have your vehicle checked by
your Scion dealer.
CAUTION
Be sure to reinstall the tire valve
caps. Without the valve caps, dirt
or moisture could get into the
valve core and cause air leakage.
If the caps have been lost, have
new ones put on as soon as pos-
sible.
Incorrect tire infl ation pressure may
waste fuel, reduce the comfort of driv-
ing, reduce tire life and make your ve-
hicle less safe to drive.
If a tire frequently needs refilling,
have it checked by your Scion dealer.
CAUTION
Keep your tires properly inflated.
Otherwise, the following condi-
tions may occur and cause an ac-
cident resulting in death or seri-
ous injuries.
Low tire pressure ( underinfla-
tion)—
 Excessive wear
 Uneven wear
 Poor handling
 Possibility of blowouts from an
overheated tire
 Poor sealing of the tire bead
 Wheel deformation and/or tire
separation
 A greater possibility of tire
damage from road hazards