2012 TOYOTA PRIUS tires

580 6-1. Specifications
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
■ 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.

581
6-1. Specifications
6
Vehicle specifications
■
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.
Warning: The temperature grades of a tire assume that it is properly
inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either sepa-
rately or in combination, can caus e heat buildup and possible tire fail-
ure.

597
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Maintenance data After the maintenance is performed P. 403
Tire pressure warning
system • When rotating the tires on vehicles
with differing front and rear tire infla-
tion pressures
• When changing the tire size P. 439
The following items must be initia
lized for normal system operation
after such cases as the 12-volt batt ery being reconnected, or mainte-
nance being performed on the vehicle.

625
Alphabetical index
Replacing
Electronic key battery ........... 454
Fuses.................................... 456
Light bulbs ............................ 467
Tires ..................................... 523
Reporting safety defects for U.S. owners ........................... 600
Safety Connect ........................ 388
Seat belt reminder light .......... 498
Seat belts Adjusting the seat belt .......... 110
Automatic Locking Retractor (ALR).................................. 111
Child restraint system installation .......................... 165
Cleaning and maintaining the seat belt ....................... 400
Emergency Locking Retractor
(ELR) ................................. 111
How to wear your seat belt ............................. 109
How your child should wear the seat belt ....................... 111
Pre-collision seat belts ......... 303
Pregnant women,
proper seat belt use ........... 113
Reminder light ...................... 498
Seat belt extenders .............. 112
Seat belt instructions for Canadian owners .......... 601
Seat belt pretensioners ........ 110
Seat heaters ............................. 369
Seating capacity ...................... 316 Seats
Adjustment .....................99, 102
Adjustment
precautions .................101, 104
Child seats/child restraint
system installation ..............165
Cleaning ................................399
Folding down the seatbacks............................103
Head restraint........................105
Properly sitting in the seat .....138
Seat heaters ..........................369
Service reminder indicators ..............................219
Shift lever Transmission .........................202
Side airbags..............................140
Side marker lights
Replacing light bulbs .............467
Switch....................................250
Wattage .................................570
Side mirrors Adjusting and folding ............. 121
Smart key system Antenna location .....................64
Entry functions ........................61
Starting the hybr id system.....192
Solar Ventilation System .........339
SOS button ...............................388
Spare tire Inflation pressure...................569
Storage location ....................523
Spark plug ................................566
Specifications...........................560
Speedometer ............................214
S
*: Refer to “Display Audio System Owner’s Manual” or “Navigation System Owner’s Manual”.

626 Alphabetical index
Steering wheelAdjustment ............................ 117
Audio switches
*
Storage feature......................... 357
Stuck
If your vehicle becomes stuck ................................... 554
Sun visors................................. 364
Switch
Audio remote control switches
*
Cruise control switch ............. 266
Driving mode selectswitch .................................. 204
Eco drive mode switch .......... 204
Emergency flasher switch ..... 484
EV drive mode switch............ 199
Fog light switch ..................... 256
Hazard light switch ................484
Headlight cleaner switch ....... 265
Ignition switch........................ 192
Light switches........................ 250
Power door lock switch ...........87
“POWER” switch ................... 192
Power window switch ............ 123
Pre-collision braking off switch .................................. 304
Talk switch
*
Telephone switch*
Ventilation switch .................. 339
Window lock switch ............... 123
Wipers and washer switch .... 258 Tail lights
Switch ................................... 250
Talk switch
*
Telephone switch*
Theft deterrent system Immobilizer system ............... 135
Theft prevention labels ........... 137
Tire inflation pressure ............. 447
Tire information Glossary ................................ 582
Size ....................................... 578
Tire identification number...... 577
Uniform Tire Quality Grading ............................... 580
Tires Chains ................................... 319
Checking ............................... 437
If you have a flat tire.............. 523
Inflation pressure .................. 447
Inflation pressure sensor....... 438
Information ............................ 575
Replacing .............................. 523
Rotating tires ......................... 437
Size ....................................... 569
Snow tires ............................. 317
Spare tire .............................. 523
Tire pressure warning system ........................ 437, 499
T