2004 TOYOTA xA Owners Manual (in English)

123 This illustration indicates typical tire
symbols.
1. Tire size—For details, see “Tire
size” on page 125.
2. DOT and Tire Identification
Number (TIN)—For details, see
“DOT and Tire Identification Num-
ber (TIN)” on page 124.
3. Location of tread wear indica-
tors—For details, see “Checking
and replacing tires” on page 194.
4. 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.
5. “TUBELESS” or “TUBE TYPE”
—Tubeless tire does not have a
tube inside the tire and air is direct-
ly filled in the tire, avoiding rapid
air leakage even if the tire is nailed
and preventing the tire from burst-
ing with a shock. Tube type tire has
a tube inside the tire and that tube
maintains the air pressure.
Tire information—
—Tire symbols
21A005

124 6. Load limit at maximum cold tire
inflation pressure—For details,
see “Checking and replacing tires”
on page 194.
7. Maximum cold tire inflation
pressure—This means the pres-
sure to which a tire may be in-
flated. For details about recom-
mended cold tire inflation pressure,
see “Tires” on page 215.
8. Summer tire or all season
tire—An all season tire has “M+S”
on the sidewall. The tire not
marked with “M+S” is a summer
tire. For details, see “Types of
tires” on page 134.
21A009
This illustration indicates typical DOT
and Tire Identification Number (TIN).
1. Department of Transportation
2. Tire Identification Number (TIN)
3. Tire manufacturer ’s identification
mark
4. Tire size code
5. Manufacturer ’s optional tire type
code (2 digits or 3 digits)
6. Manufacturing week
7. Manufacturing yearThe “DOT” symbol certifies tire
manufacturer ’s compliance with De-
partment of Transportation Tire Safe-
ty Standards.
—DOT and Tire Identification
Number (TIN)

125
21A010
This illustration indicates typical tire
size.
1. Tire use (P=Passenger car,
T=Temporary use)
2. Section width (in millimeters)
3. Aspect ratio (tire height to section
width)
4. Tire construction code (R=Radial,
D=Diagonal)
5. Wheel diameter (in inch)
6. Load index (2 digits or 3 digits)
7. Speed symbol (alphabet with one
letter)1. Section width
2. Tire height
3. Wheel diameter1. Bead
2. Sidewall
3. Shoulder
4. Tread
5. Belt
6. Inner liner
7. Reinforcing rubber
8. Carcass
9. Rim lines
10. Bead wires
11. Chafer
—Tire size —Name of each section of tire

126
—Uniform tire quality grading
This information has been prepared
in accordance with regulations issued
by the National Highway Traffic Safe-
ty Administration of the U.S. Depart-
ment of Transportation. It provides
the purchasers and/or prospective
purchasers of Scion vehicles with in-
formation on uniform tire quality grad-
ing.
Your Scion dealer will help answer
any questions you may have as you
read this information.
DOT quality grades—All passenger
vehicle tires must conform to Fed-
eral Safety Requirements in addi-
tion to these grades. Quality
grades can be found where appli-
cable on the tire sidewall between
tread shoulder and maximum sec-
tion width.
For example:
Treadwear 200 Traction AA
Temperature ATreadwear—The treadwear grade is
a comparative rating based on the
wear rate of the tire when tested un-
der controlled conditions on a speci-
fied government test course. For ex-
ample, a tire graded 150 would wear
one and a half (1−1/2) 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 hab-
its, 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, and they represent
the tire’s ability to stop on wet pave-
ment as measured under controlled
conditions on specified government
test surfaces of asphalt and concrete.
A tire marked C may have poor trac-
tion performance.
Warning: The traction grade assigned
to this tire is based on braking
(straight ahead) traction tests and
does not include cornering (turning)
traction.

127 Temperature A, B, C—T he tem per a-
ture grades are A (the highest), B,
and C, representing the tire’s resis-
tance 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 cor-
responds to a level of performance
which all passenger car tires must
meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B
and A represent higher levels of per-
formance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades for
this tire are established for a tire that
is properly inflated and not over-
loaded. Excessive speed, underinfla-
tion, or excessive loading, either sep-
arately or in combination, can cause
heat buildup and possible tire failure.

128Cold tire inflation pressure
Tire infration pressure when the vehicle has been parked at least 3 hours 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 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 re-
placed) of automatic transmission, power steering, power brakes, power win-
dows, power seats, radio, and heater, to the extent that these items are avail-
able 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 on page 130
Production options weight
The combined weight of those installed regular production options weighing
over 2.3 kg (5 lb.) in excess of those standard items which they replace, not
previously considered in curb weight or accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty battery, and special trim
— Tire relat ed terms

129 Vehicle capacity weight
(Total load capacity)
The rated cargo and luggage load plus 68 kg (150 lb.) times the vehicle’s
designated seating capacity
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
Occupant distributionDistribution of occupants in a vehicle as specified in the third column of Table
1 on page 130
RimA metal support for a tire or a tire and tube assembly upon which the tire beads
are seated
Rim diameter (Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry of manufacturer ’s designation for a rim by style or code
Rim widt hNominal distance between rim flanges
Vehicle maximum load on the tireThe 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
The load on an individual tire that is determined by distributing to each axle
its share of the curb weight, accessory weight, and normal occupant weight
(distributed in accordance with Table 1 on page 130) and dividing by two
Weather sideThe surface area of the rim not covered by the inflated tire

130 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 occu-
pantsOccupant distribution in a normally
loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat