wheel TOYOTA IQ 2013 Manual Online

316
6-1. Specifications
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
*: Unladen vehicles
Overall length120.0 in. (3050 mm)
Overall width66.1 in. (1680 mm)
Overall height*59.0 in. (1500 mm)
Wheelbase78.7 in. (2000 mm)
TreadFront 58.3 in. (1480 mm)
Rear 57.5 in. (1460 mm)
Vehicle capacity weight
(Occupants + luggage) 660 lb. (295 kg)

323
6-1. Specifications
6
Vehicle specifications
Steering
Tires and wheels
Free play
Less than 1.2 in. (30 mm)
Tire size175/60R16 82H
Tire inflation pressure
(Recommended cold tire
inflation pressure)Driving under normal conditions
Front tires:
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Rear tires:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Wheel size 16  5 J
Wheel nut torque 76 ft·lbf (103 N·m, 10.5 kgf·m)
CAUTION
■When replacing tires and wheels
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to the peripheral parts of the tires,
as well as dangerous handling characteristics, which may lead to fatal or
injury accidents.
Do not use tire sizes or wheel sizes other than those recommended by
Scion.

330 6-1. Specifications
Tire size■ Typical tire size information
The illustration indicates typical tire size.
Tire use
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol
(alphabet with one letter)
■ Tire dimensions
Section width
Tire height
Wheel diameter

332 6-1. Specifications
■Treadwear
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested under controlled conditions on a speci-
fied government test course.
For example, 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. Performance may diff er 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,
and they represent the tire’s ab ility to stop on wet pavement as
measured under controlled cond itions on specified 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 braking
(straight ahead) traction tests and does not include cornering (turn-
ing) traction.
■ Temperature A, B, C
The temperature grades are A (the highest), B, and C, represent-
ing the tire’s resistance to the generation of heat and its ability to
dissipate heat when tested under controlled conditions on a speci-
fied 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.
Grade C corresponds 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 performance on the labo-
ratory test wheel than the minimum required by law.

334 6-1. Specifications
Tire related termMeaning
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options
weight
The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the 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
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 manufacturer’s designation for a
rim by style or code
Rim widthNominal distance between rim flanges
Vehicle capacity
weight (Total load
capacity)The rated cargo and luggage load plus 150 lb.
(68 kg) times the vehicle’s designated seating
capacity
Vehicle maximum load
on the tire
The 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 curb
weight, accessory weight, and normal occu-
pant weight (distributed in accordance with
Ta b l e 1
* below), and dividing by two
Weather sideThe surface area of the rim not covered by the
inflated tire

337
6-1. Specifications
6
Vehicle specifications
Tire related termMeaning
Ply separationA parting of rubber compound between adja-
cent plies
Pneumatic tire
A mechanical device made of rubber, chemi-
cals, fabric and steel or
other materials, that,
when mounted on an automotive wheel, pro-
vides the traction and contains the gas or fluid
that sustains the load
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
Reinforced tire
A tire designed to operate at higher loads and
at higher inflation pressures than the corre-
sponding standard tire
Section width
The linear distance between the exteriors of
the sidewalls of an inflated tire, excluding ele-
vations due to labeling, decoration, or protec-
tive 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
Single 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
Te s t r i m
The rim on which a tire is fitted for testing, and
may be any rim listed as appropriate for use
with that tire

338 6-1. Specifications
*:Table 1  Occupant loading and distri bution for vehicle normal load
for various designated seating capacities
Tire related termMeaning
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
Designated seating
capacity, Number of occupants Vehicle normal load,
Number of occupantsOccupant distribution in a normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
11 through 155
2 in front, 1 in second
seat, 1 in third seat, 1 in fourth seat
16 through 207
2 in front, 2 in second
seat, 2 in third seat, 1 in fourth seat

359
Alphabetical index
Alphabetical index
A/C ............................................ 156
ABSABS ...................................... 139
Warning light ........................ 275
Air conditioning filter .............. 234
Air conditioning system Air conditioning filter ............. 234
Air conditioning
system................................ 156
Airbags
Airbag operating conditions .... 68
Airbag precautions for your child...................................... 73
Curtain shield airbag operating conditions ............. 69
Curtain shield airbag
precautions .......................... 73
Front passenger occupant classification system ............ 79
General airbag precautions .... 73
Indicators ................................ 79
Knee airbag precautions ........ 73
Locations of airbags ............... 65
Modification and disposal of airbags ................................. 78
Proper driving posture ...... 63, 73
Rear window curtain shield airbag precautions ..... 73
Seat cushion airbag precautions .......................... 73
Side airbag operating
conditions ............................. 69
Side airbag precautions.......... 73
SRS airbags ........................... 65
Warning light ........................ 275
Anti-lock brake system Anti-lock brake system ......... 139
Warning light ........................ 275
Assist grips.............................. 176
Audio input .............................. 165 Audio system
Audio input ............................165
AUX port/USB port ................165
Portable music player............165
Steering wheel audio switch ..................................166
Automatic light control
system ....................................130
Automatic transmission Automatic transmission .........114
Fluid ......................................322
If the shift lever cannot be shifted from P......................303
Indicators...............................114
Shift lock system .... ...............303
AUX port ...................................165
Auxiliary box ............................172
Back-up lights
Replacing light bulbs .............251
Wattage .................................324
Back door ...................................31
Battery Checking ...............................216
If the vehicle battery is
discharged ..........................305
Voltage ..................................321
Warning light .........................274
Bottle holders ...........................171
Brake assist ..............................139
Brakes Fluid ......................................215
Parking brake ........................116
Specifications ........................322
Warning light .........................273
Break-in tips .............................103A
B

364 Alphabetical index
Radiator .................................... 214
Rear seatFolding down ...........................38
Rear side marker lights Replacing light bulbs ............. 251
Switch.................................... 130
Wattage ................................. 324
Rear turn signal lights
Indicator ................................ 122
Lever ..................................... 115
Replacing light bulbs ............. 251
Switch.................................... 115
Wattage ................................. 324
Rear window defogger ............ 162
Rear window wiper .................. 137
Replacing Key battery ............................ 238
Fuses .................................... 240
Light bulbs ............................. 251
Tires .............................. 202, 220
Reporting safety defects for U.S. owners ...................... 344
Seat belts ALR .........................................43
Automatic Locking Retractor ...43
Child restraint system installation .......................85, 90
Cleaning and maintaining...... 186
ELR .........................................43
Emergency Locking Retractor .............................. 43
How to wear your seat belt......41
How your child should wear the seat belt ..........................44
Pregnant women, proper seat belt use .........................44
Reminder light ....................... 276
Seat belt extenders .................44
Seat belt pretensioners ...........43 Seats
Adjustment .............................. 35
Adjustment precautions .......... 37
Child seats/child restraint system installation .......... 85, 90
Cleaning ................................ 185
Front seat adjustment ............. 35
Front seat adjustment precautions ........................... 37
Properly sitting in the seat....... 63
Service reminder
indicators .............................. 121
Shift lever Automatic transmission ......... 114
If the shift lever cannot be
shifted from P ..................... 303
Shift lock system ..................... 303
Side airbags ............................... 65
Side marker lights Replacing light bulbs ............. 251
Switch ................................... 130
Wattage................................. 324
Side mirror
Adjusting ................................. 50
Defogger ............................... 163
Folding .................................... 51
Spark plug ................................ 321
Specifications .......................... 316
Speedometer ............................ 119
Steering wheel Adjustment .............................. 47
Column lock release ............. 112
Electric power steering.......... 139
EPS ....................................... 139
Specification.......................... 323
Warning light ......................... 275R
S

366 Alphabetical index
Traction control........................ 139
TRAC ......................................... 139
Trip information ....................... 125
Trip meter ................................. 125
Turn signal lightsIndicator ................................ 122
Lever ..................................... 115
Replacing light bulbs ............. 251
Switch.................................... 115
Wattage ................................. 324
USB port ................................... 165
Vanity mirrors........................... 174
Vehicle data recordings ............18
Vehicle identification number ................................... 317
Vehicle stability control........... 139
VSC............................................ 139
Warning buzzers
Brake system ........................ 273
Seat belt reminder ................. 276
Warning lights ABS ....................................... 275
Airbag system ....................... 275
Anti-lock brake system .......... 275
Brake system ........................ 275
Charging system .... ............... 274
Driver’s seat belt ................... 276
Electric power steering system ................................ 275
Electronic engine control system ................................ 275
Engine oil replacement.......... 276
EPS system........................... 275 Front passenger occupant
classification system ........... 275
Front passenger’s seat belt... 276
High engine coolant temperature ........................ 274
Low brake fluid ...................... 273
Low engine oil pressure ........ 274
Low fuel level ........................ 276
Low tire inflation pressure ..... 276
Low washer fluid ................... 276
Malfunction............................ 275
Open door ............................. 276
Seat belt ................................ 276
Seat belt pretensioner system ................................ 275
SRS....................................... 275
SRS airbag system ............... 275
Tire pressure ......................... 276
Tire pressure warning system ................................ 276
VSC OFF .............................. 275
Washer Checking ............................... 218
Preparing and checking
before winter ....................... 149
Switch ........................... 134, 137
Warning light ......................... 276
Washing and waxing ............... 182
Weight Cargo capacity ...................... 144
Load limits ............................. 148
Weight ................................... 316
Wheels ...................................... 232
Window glasses ............ 53, 162, 182, 185
Window lock switch................... 53
U
V
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