2013 Lexus GS350 tires

749
GS350_U (OM30C34U)
7
When trouble arises
7-2. Steps to take in an emergency
If the vehicle becomes stuck
Stop the engine. Set the parking brake and shift the shift lever to P.
Remove the mud, snow or sand from around the rear wheels.
Place wood, stones or some other material under the rear wheels to
help provide traction.
Restart the engine.
Shift the shift lever to D or R and release the parking brake. Then, while
exercising caution, depress the accelerator pedal.
■When it is difficult to free the vehicle
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Press to turn off TRAC.
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752
GS350_U (OM30C34U)
8-1. Specifications
Maintenance data (fuel, oil level, etc.)
*1: Unladen vehicle
*2: Vehicles with 265/35R19 tires
Dimensions and weight
Overall length190.7 in. (4845mm)
Overall width72.4 in. (1840 mm)
Overall height*12WD57.3 in. (1455 mm)
AW D57.9 in. (1470 mm)
Wheelbase112.2 in. (2850 mm)
Tread*1
Front62.0 in. (1575 mm)
Rear62.6 in. (1590 mm)
61.4 in. (1560 mm)
*2
Vehicle capacity weight
(Occupants + luggage)825 lb. (370 kg)

GS350_U (OM30C34U)
7598-1. Specifications
8
Vehicle specifications
XTy p e A
XTy p e B
Tires and wheels
Ti r e s i z e225/50R17 94W
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front tire33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Rear tire 33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Wheel size17 × 7 1 /2J
Wheel nut torque76 f t•lbf (103 N•m, 10.5 kgf•m)
Ti r e s i z e235/45R18 94Y, P235/45R18 94V
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front tire
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Rear tire 33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Wheel size18 × 8J
Wheel nut torque76 f t•lbf (103 N•m, 10.5 kgf•m)

766
GS350_U (OM30C34U)
8-1. Specifications
Tire size (→ P. 76 8 )
DOT and Tire Identification Number (TIN) (→P. 76 7 )
Location of treadwear indicators (→ P. 6 2 9 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands which form
the plies in a 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 put into the tire. A tube type
tire has a tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( →P. 772)
Maximum cold tire inflation pressure ( →P. 772)
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires (→P. 6 3 4 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer
tire.
“TEMPORARY USE ONLY”
A compact spare tire is identified by the phrase “TEMPORARY USE ONLY”
molded on its sidewall. This tire is designed for temporary emergency use only.
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770
GS350_U (OM30C34U)
8-1. Specifications
This information has been prepared in accordance with regulations issued
by the National Highway Traffic Safety Administration of the U.S. Depart-
ment 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 any questions you may have as you read this
information.
■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 govern-
ment 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 differ significantly from the norm due to variations in
driving habits, service practices and differences in road characteristics and cli-
mate.
■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) traction.
Uniform Tire Quality Grading

GS350_U (OM30C34U)
7718-1. Specifications
8
Vehicle specifications
■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 labora-
tory 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 laboratory 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 separately or in
combination, can cause heat buildup and possible tire failure.

788
GS350_U (OM30C34U)
8-3. Items to initialize
Items to initialize
The following items must be initialized for normal system operation
after such cases as the battery being reconnected, or maintenance
being performed on the vehicle:
ItemWhen to initializeReference
Maintenance data• After the maintenance is per- formedP. 6 0 2
Tire pressure warning system
• When rotating the tires
• When changing the tire infla-tion pressure by changing trav-
eling speed or load weight, etc.
P. 6 3 2

820Alphabetical index
GS350_U (OM30C34U)
Rear turn signal lights .......................... 184Replacing light bulbs ....................... 669
Turn signal lever .................................. 184
Wattage ....................................................761
Rear view mirror Inside rear view mirror ..................... 140
Outside rear view mirrors ...............142
Rear view monitor system ..................251
Rear window defoggers .................... 365
Refueling .................................................. 204
Capacity .................................................754
Fuel types ............................................... 754
If the fuel filler door cannot be opened .........................207
Opening the fuel tank cap............ 206
Remote Touch ....................................... 306
Remote Touch screen ........................308
Replacing
Electronic key battery ..................... 646
Fuses........................................................ 648
Light bulbs ............................................ 663
Tires .......................................................... 722
Reporting safety defects for U.S. owners................................... 790
Reset the maintenance data ............ 602 Safety Connect ..................................... 586
Seat belts .................................................... 30
Adjusting the seat belt.......................... 31
Automatic Locking Retractor .........32
Child restraint system
installation ............................................. 60
Cleaning and maintaining
the seat belt .......................................599
Emergency Locking
Retractor.................................................32
How to wear your seat belt............. 30
How your child should wear the seat belt ...........................................32
Pre-collision seat belts ........................32
Pregnant women, proper seat belt use ......................................... 33
Reminder light and buzzer .......... 689
Seat belt extender .................................32
Seat belt pretensioners ........................ 31
SRS warning light .............................. 687
Seat heaters............................................ 568
Seat position memory ..........................130
Seat ventilators...................................... 569
Seating capacity .....................................168S