2012 Lexus LFA tires

371
6-1. Specifications
6
Vehicle specifications
Tire information
Ty p i c a l t i r e s y m b o l s
Ti r e s i z e( P. 3 7 3 )
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly put into the tire. A tube
type tire has a tube inside the tire and the tube maintains the air pressure.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a
bias-ply tire.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.

372
6-1. Specifications
DOT and Tire Identification Number (TIN)(P. 3 7 2 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands which
form the plies in a tire.
Load limit at maximum cold tire inflation pressure ( P. 273)
Maximum cold tire inflation pressure ( P. 366)
This means the pressure to which a tire may be inflated.
Location of treadwear indicators ( P. 270)
Summer tires or all season tires ( P. 273)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
Typical DOT and Tire Identification Number (TIN)
DOT symbol
*
Tire Identification Number (TIN)
Tire manufacturer's identifica-
tion mark
Tire size code
Manufacturer's optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
*: The DOT symbol certifies thatthe tire conforms to applicable
Federal Motor Vehicle Safety
Standards.

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6-1. Specifications
6
Vehicle specifications
Uniform Tire Quality GradingThis information has b een prepared in accordance with regulations
issued by the National Highway Traf fic Safety Administration of the U.S.
Department of Transportation.
It provides the purchasers and/or prospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading.
Your Lexus dealer will help answer an y questions you may have as you read
this information.
■ DOT quality grades
All passenger vehicle tires must co nform 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 controll ed 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 de pends 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.

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6-1. 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 ability to stop on wet pavement as measured
under controlled condit ions 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.
■ Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified 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 fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Mo tor Vehicle Safety Standard No. 139.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excess ive loading, either separately or in
combination, can cause heat buildup and possible tire failure.

412
Alphabetical index
Switch“ENGINE START” switch ............... 98
Active rear wing ..................................... 171
Air conditioning system......... 186, 194
Audio system ....................................... 202
AUTO driving mode button......... 104
Control pad ............................................125
Driving mode selector switch ...... 104
Emergency flasher switch ............. 302
Hazard light switch ........................... 302
Interior lights.........................................208
Light switches ....................................... 158
Paddle shift switches ..........................102
Parking brake ..........................................113
Power door lock switch .................... 25
Power window switch ........................ 46
Reverse selector switch .................. 103
Shift speed selector ............................107
Talk switch*
1............................................ 191
Turn signal lever ................................... 167
VSC off switch ........................................112
Wipers and washer switch ............ 160 Tachometer
Tacho indicator .................................... 129
Tachometer.............................................. 116
Rev Peak.................................................. 148
Tail lights Replacing light bulbs ....................... 299
Switch ........................................................158
Talk switch*
1................................................... 191
Theft deterrent system Alarm.......................................................... 55
Engine immobilizer system ..............53
Timer Lap timer ................................................. 142
Tire information Glossary ................................................. 377
Size ............................................................373
Tire identification number .............. 372
Uniform tire quality grading..........375
Tire inflation pressure ............... 132, 366
Tire inflation pressure gauge ........... 278
Tires Air gauge................................................278
Chains.........................................................181
Checking................................................270
If you have a flat tire ..........................332
Inflation pressure ..................... 132, 366
Inflation pressure sensor ................270
Information ............................................. 371
Size ........................................................... 366
Snow tires................................................180
Tire inflation pressure gauge........278
Tire inflation pressure label ........... 277
Tool bag....................................... 281, 332
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