Page 643 of 846
642
GS350_OM_OM30D41U_(U)
6-3. Do-it-yourself maintenance
Tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indicators is
shown by the “TWI” or “∆” marks, etc.,
molded on the sidewall of each tire.
Check spare tire condition and pres-
sure if not rotated.
Replace or rotate tires in accord ance with maintenance schedules and
treadwear.
Checking tires
1
2
3
GS350_OM_OM30D41U_(U).book Page 642 Monday, July 29, 2013 2:22 PM
Page 738 of 846
7377-2. Steps to take in an emergency
GS350_OM_OM30D41U_(U)
7
When trouble arises
Location of the spare tire, jack and tools
Jack handle
Parking brake release tool
Screwdriver
Towing eyeletWheel nut wrench
Spare tire
Jack1
2
3
4
5
6
7
GS350_OM_OM30D41U_(U).book Page 737 Monday, July 29, 2013 2:22 PM
Page 749 of 846

7487-2. Steps to take in an emergency
GS350_OM_OM30D41U_(U)
CAUTION
■Speed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact spare tire
is installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to
observe this precaution may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their stor-
age location to reduce the possibility of personal injury during a collision or sudden
braking.
NOTICE
■Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving perfor-
mance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
GS350_OM_OM30D41U_(U).book Page 748 Monday, July 29, 2013 2:22 PM
Page 783 of 846

782
GS350_OM_OM30D41U_(U)
8-1. Specifications
Tire size (→ P. 7 8 4 )
DOT and Tire Identification Number (TIN) (→P. 783)
Location of treadwear indicators (→ P. 6 4 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.
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. 7 8 8 )
Maximum cold tire inflation pressure ( →P. 7 8 8 )
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 4 7 )
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.
1
2
3
4
5
6
7
8
9
10
11
GS350_OM_OM30D41U_(U).book Page 782 Monday, July 29, 2013 2:22 PM
Page 840 of 846

839Alphabetical index
GS350_OM_OM30D41U_(U)
Seats............................................................ 130Adjustment ............................................. 130
Adjustment precautions .................... 131
Child seats/child restraint
system installation..............................59
Cleaning .................................................. 612
Driving position memory .................132
Head restraints..................................... 138
Power easy access system .............132
Properly sitting in the seat ................28
Seat heaters ........................................... 581
Seat position memory........................132
Seat ventilators ..................................... 581
Sensor
Automatic headlight system .......... 195
Humidity sensor ................................ 365
Inside rear view mirror ..................... 143
Intuitive parking assist ......................240
Lexus night view ................................ 302
LKA (Lane-Keeping Assist) .........239
Radar sensor ................... 224, 281, 291
Rain-sensing windshield wipers .................................................. 203
Service reminder indicators ................76
S-FLOW mode ..................................... 363
Shift lever .................................................. 180
Automatic transmission ...................180
If the shift lever cannot be shifted from P ............. 751
Shift lever light .........................................561
Shift lock system......................................751
Side airbags ............................................... 37
Side marker lights...................................192 Light switch ............................................ 192
Replacing light bulbs ....................... 687
Welcome light illumination
control ................................................... 103 Side mirrors .............................................. 144
Adjusting and folding ........................ 144
Blind Spot Monitor ...........................288
Linked mirror function
when reversing..................................145
Mirror position memory .................. 132
Side turn signal lights ............................186 Replacing light bulbs ....................... 687
Turn signal lever .................................. 186
Smart access system
with push-button start .......................103Antenna location................................. 105
Entry functions ..................................... 103
Starting the engine .............................. 173
Warning message............................... 718
Snow tires ................................................ 308
Spare tire ..................................................736 Inflation pressure................................ 776
Storage location ..................................737
Spark plug ................................................ 772
Specifications......................................... 768
Speedometer .............................................. 81
Steering lock ............................................ 176 Column lock release ......................... 177
Steering lock system warning message........................... 734
Steering wheel ..........................................141 Adjustment................................................141
Audio switches ................................... 492
Heated steering wheel ................... 579
Power easy access system ............. 132
Steering wheel
position memory .............................. 132
Stop lights
Replacing light bulbs ....................... 687
Storage feature ..................................... 564
GS350_OM_OM30D41U_(U).book Page 839 Monday, July 29, 2013 2:22 PM