474 6-1. Specifications
PRIUS_U_(OM47614U)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the
strands which form the plies in a tire.
Summer tire or all season tire ( P. 379)
An all season tire has “M+S” on the sidewall. A tire not marked
“M+S” is a summer tire.
Radial tires or bias-ply tires
A radial tire has RADIAL on the sidewall. A tire not marked RADIAL
is a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly filled in the
tire. A tube type tire has a tube inside the tire and the tube main-
tains the air pressure.
Load limit at maximum cold tire inflation pressure ( P. 479)
Maximum cold tire in flation pressure ( P. 479)
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform tire quality grading” that follows.
“TEMPORARY USE ONLY” ( P. 437)
A compact spare tire is identified by the phrase “TEMPORARY USE
ONLY” molded into its sidewall. This tire is designed for temporary
emergency use only.
477
6-1. Specifications
6
Vehicle specifications
PRIUS_U_(OM47614U)
Tire section names
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Uniform Tire Quality GradingThis information has been prepared in accordance with regulations
issued by the National Highway Tr affic Safety Administration of the
U.S. Department of Transportation.
It provides the purchasers and/or prospective purchasers of Toyota
vehicles with information on uniform tire quality grading.
Your Toyota dealer will help answ er any questions you may have as
you read this information.
■ DOT quality grades
All passenger vehicle tires mu st conform to Federal Safety
Requirements in addition to these grades. Quality grades can be
found where applicable on the tire sidewall between tread shoulder
and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
478 6-1. Specifications
PRIUS_U_(OM47614U)■
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, 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,
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.
The grade C corresponds to a level of performance which all passen-
ger car tires must meet under the Federal Motor Vehicle Safety Stan-
dard No. 109.
Grades B and A represent higher levels of performance on the labo-
ratory test wheel than the minimum required by law.
489
6
Vehicle specifications
PRIUS_U_(OM47614U)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Power window • After reconnecting or changing the
12 volt battery
• After changing a fuse P. 7 6
Engine oil mainte-
nance data • After changing engine oil
P. 365
Tire pressure warning
system • When rotating the tires on vehicles
differing with front and rear tire infla-
tion pressures.
• When changing the tire inflation pressure by changing traveling
speed or load weight, etc.
• When changing the tire size. P. 377
After reconnecting or performing
maintenance on the 12 volt battery,
the following items must be initia lized for normal system operation.
503
Alphabetical index
PRIUS_U_(OM47614U)
Tire information
Glossary ............................... 479
Size ...................................... 476
Tire identification number ..... 475
Uniform tire quality grading .. 477
Tires
Chains .................................. 175
Checking .............................. 375
Compact spare tire ............... 437
If you have a flat tire ............. 436
Inflation pressure .................. 468
Information ........................... 473
Pressure warning system ..... 375
Replacing ............................. 436
Rotating tires ........................ 375
Size ...................................... 468
Snow tires............................. 175
Spare tire .............................. 437
Tools......................................... 436
Total load capacity .................. 172
Touch screen ........................... 182
Towing Dinghy towing ....................... 178
Emergency towing ................ 413
Trailer towing ........................ 177
Transmission “P” position switch ................ 139
Transmission ........................ 138
Trip information......................... 27
Trip meter................................. 146
Turn signal lights Replacing light bulbs ............ 403
Switch ................................... 142
Wattage ................................ 469
Vanity lights Vanity lights .......................... 327
Wattage ................................ 469
Vanity mirrors .......................... 327
Vehicle identification
number................................... 461
Vehicle load limits ................... 172 Warning buzzers
Brake system ........................423
Open door ............................426
Seat belt reminder .................426
Warning lights Anti-lock brake
system (ABS) ......................425
Brake system ........................423
Charging system .... ...............424
Electric power steering warning light........................425
Low fuel level ........................426
Malfunction indicator lamp ....424
Master warning light ..............427
Open door .............................426
Seat belt reminder light .........426
SRS airbags ..........................424
Tire pressure warning
light .....................................426
Washer Checking ...............................374
Preparing and checking before winter .......................173
Switch....................................156
Washing and waxing ...............342
Weight
Cargo capacity ......................169
Load limits .............................172
Weight ...................................460
Wheels ......................................388
Window glasses ........................76
Window lock switch ...................76
Windows Power windows .......................76
Rear window defogger ..........213
Washer ..................................156
Windshield wipers
Windshield wipers .................156
Winter driving tips ...................173
Wireless remote control key Locking/Unlocking ...................49
Replacing the battery ............392
WMA disc ..................................250
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