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6-1. Specifications
IS350/250_U■
DOT quality grades
All passenger vehicle tires must conform to Federal Safety Require-
ments 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 specified gov-
ernment 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 varia-
tions in driving habits, service practices and differences in road characteris-
tics 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 conditions 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 (turning) trac-
tion.
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Alphabetical index
IS350/250_U
Parking assist sensors .......................... 179
Parking brake .......................................... 148
Parking lightsReplacing light bulbs........................ 439
Switch ....................................................... 165
Wattage.................................................. 524
Personal lights Switch ........................................................ 317
Power outlet............................................334
Power windows ........................................ 75
Radiator ....................................................394
Radio ........................................................... 219
RDS ............................................................. 221
Rear sunshade ....................................... 342
Rear turn signal lights Replacing light bulbs........................ 439
Wattage.................................................. 524
Rear view mirror Compass ...............................................356
Rear window defogger........................ 214
Replacing Electronic key battery........................ 421
Fuses ........................................................ 423
Light bulbs............................................. 439
Reporting safety defects for
U.S. owners ......................................... 548 Safety Connect ..................................... 360
Scuff lights................................................. 315
Seat belts
Adjusting the seat belt ......................... 61
Automatic locking retractor ............62
Child restraint system
installation .............................................. 113
Cleaning and maintaining
the seat belts ..................................... 372
Emergency locking retractor.......... 62
How to wear your seat belt ............ 60
How your child should wear
the seat belt...........................................63
Pregnant women,
proper seat belt use ......................... 62
Reminder light..................................... 463
Seat belt extenders...............................63
Seat belt pretensioners ....................... 61
Seat heaters ................................ 335, 338
Seat ventilators ......................................338
Seating capacity......................................194
Seats Adjustment ................................................ 51
Adjustment precautions ....................52
Child seats/child restraint system installation .............................. 113
Cleaning .................................................. 371
Driver’s seat position memory .......53
Head restraint .........................................57
Properly sitting in the seat.................. 91
Seat heaters ............................. 335, 338
Ventilated seats.................................. 338
Service reminder indicators .............157P
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