640 6-1. Specifications
Tire section namesBead
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
641
6-1. Specifications
6
Vehicle 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, 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 ability 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.
677
Alphabetical index
Radiator.................................... 514
Radio ........................................ 307
Rear automatic air
conditioning system ............. 292
Rear manual air conditioning
system ................................... 289
Rear seat Adjustment ............................. 77
Folding down second
seatback............................... 78
Folding down third
seatback............................... 80
Removing the second center seat ........................... 81
Stowing the second center seat ........................... 81
Rear seat entertainment
system ................................... 406
Rear turn signal lights Replacing light bulbs ............ 553
Wattage ................................ 632
Rear view mirror Compass .............................. 476
Rear view monitor system...... 223
Rear window defogger............ 295
Rear window wiper.................. 216
Replacing Fuses.................................... 542
Key battery ........................... 539
Light bulbs ............................ 553
Tires ..................................... 586
Reporting safety defects for
U.S. owners ........................... 654
Reset the maintenance data ........................................ 489
Roof luggage carrier ............... 246 Seat belts
Adjusting the seat belt .............88
Automatic Locking
Retractor ...............................89
Child restraint system
installation ...........................148
Cleaning and maintaining the seat belts ......................486
Emergency Locking Retractor ...............................89
How to wear your seat belt......88
How your child should wear
the seat belt ..........................91
Pregnant women,
proper seat belt use ..............90
Reminder light .......................576
Seat belt extenders .................91
Seat belt pretensioners ...........89
Seat heaters..............................460
Seating capacity.......................247
Seats Adjustment ........................74, 77
Adjustment precaution ......76, 84
Child seats/child restraint system installation ..............148
Cleaning ................................485
Head restraint..........................85
Properly sitting in the seat .....122
Seat heaters ..........................460RS
679
Alphabetical index
Tachometer .............................. 186
Tail lights
Replacing light bulbs ............ 553
Switch ................................... 203
Wattage ................................ 632
Talk switch ............................... 378
Telephone switch .................... 378
Theft deterrent system Alarm .................................... 117
Engine immobilizer system... 113
Theft prevention labels ........... 121
Tire inflation pressure ............ 530
Tire information Glossary ............................... 642
Size ...................................... 639
Tire identification number ..... 638
Uniform tire quality
grading ............................... 640
Tires Chains .................................. 248
Checking .............................. 521
If you have a flat tire ............. 586
Inflation pressure .................. 530
Information ........................... 636
Replacing ............................. 586
Rotating tires ........................ 521
Size ...................................... 630
Snow tires............................. 248
Tire pressure warning
system........................ 521, 576 Tools .........................................586
Total load capacity...................247
Towing
Dinghy towing........................270
Emergency towing.................565
Trailer towing.........................252
Traction control........................227
TRAC .........................................227
Trip information .......................193
Trip meter .................................186
Turn signal lights Replacing light bulbs .............553
Switch....................................183
Wattage .................................632
Valet key .....................................32
Vanity lights Vanity lights ...........................453
Wattage .................................632
Vanity mirrors...........................453
Vehicle data recordings ............26
Vehicle identification number ...................................619
Vehicle stability control...........227
VSC............................................227T
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