2018 Lexus GS300 tire size

536
GS350_300_GS F_OM_OM30G34U_(U)8-1. Specifications
Tire size
(→ P. 537)
DOT and Tire Identification Number (TIN) (→ P. 537)
Location of trea dwear indicators (→ P. 393)
Tire ply composition and materials
Plies are layers of rubber-c oated 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. 540)
Maximum cold tire inflation pressure (→ P. 540)
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. 397)
An all season tire has “M+S” on the side wall. 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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GS350_300_GS F_OM_OM30G34U_(U)
5378-1. Specifications
8
Vehicle specifications
DOT symbol*
Tire Identification Number (TIN)
Tire manufacturer’s identification mark
Tire size code
Manufacturer’s optional tire type code (3 or 4 letters)
Manufacturing week
Manufacturing year
Manufacturer’s code
*: The DOT symbol certifies that the tire conforms to applicable Federal Motor Vehicle
Safety Standards.
■Typical tire size information
The illustration indicates typical tire
size.
Tire use
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code (R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol (alphabet with one letter)
Typical DOT and Tire Identification Number (TIN)
Type AType B
Tire size
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GS350_300_GS F_OM_OM30G34U_(U)
5418-1. Specifications
8
Vehicle specifications
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1* below
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a rim by
style or code
Rim widthNominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68 kg)
times the vehicle’s desi gnated seating capacity
Vehicle maximum load on
the tireThe load on an individual tire that is determined by dis-
tributing to each axle its share of the maximum loaded
vehicle weight, and dividing by two
Vehicle normal load on the
tireThe load on an individual tire that is determined by dis-
tributing to each axle its sh are of curb weight, accessory
weight, and normal occupant weight (distributed in
accordance with Table 1
* below), and dividing by two
Weather sideThe surface area of the rim not covered by the inflated
tire
Bead
The part of the tire that is made of steel wires, wrapped
or reinforced by ply cords an d that is shaped to fit the
rim
Bead separationA breakdown of the bond between components in the
bead
Bias ply tireA pneumatic tire in which the ply cords that extend to
the beads are laid at altern ate angles substantially less
than 90 degrees to the centerline of the tread
CarcassThe tire structure, except tread and sidewall rubber
which, when inflated, bears the load
ChunkingThe breaking away of pieces of the tread or sidewall
CordThe strands forming th e plies in the tire
Tire related termMeaning

595Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Tachometer ....................................... 87, 94Variable red zone................................. 97
Tail lights.....................................................216 Light switch ............................................ 216
Replacing light bulbs ........................420
Welcome light illumination control ................................................... 138
Talk switch
*
Telephone switches*
Theft deterrent system Alarm........................................................... 74
Engine immobilizer system.............. 72
Tire inflation pressure ......................... 528 Maintenance data ............................. 528
Tire inflation pressure display function ................................................394
Warning light .......................................436
Warning message .............................. 441
Tire information ..................................... 535 Glossary ................................................ 540
Size ............................................................537
Tire identification number..............537
Uniform Tire Quality Grading.............................................. 539
Tire pressure warning system ......... 394 Function ..................................................394
Initializing............................................... 395
Installing tire pressure warning valves and transmitters ................394
Registering ID codes ...................... 396
Warning light .......................................436
Warning message .............................. 441 Tires ........................................................... 393
Chains ..................................................... 298
Checking ............................................... 393
Emergency tire puncture repair kit ..............................................483
If you have a flat tire .............. 472, 483
Inflation pressure................................528
Information............................................535
Replacing ................................................472
Rotating tires ........................................ 394
Size ...........................................................528
Snow tires ............................................. 300
Spare tire.................................................472
Tire inflation pressure display function................................................ 394
Tire pressure warning system ..... 394
Warning light ....................................... 436
Warning message............................... 441
Tools ...........................................................473
Top tether strap ....................................... 68
Torque Vectoring Differential (TVD) ..................................................... 286
Total load capacity................................. 194
Towing Dinghy towing .......................................196
Emergency towing ........................... 426
Towing eyelet ...................................... 428
Trailer towing.........................................195
TRAC (Traction Control) Function ..................................................288
TRAC OFF switch ............................290
T
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

597Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Warning buzzersApproach warning ............................265
Brake system........................................434
Downshifting ........................................207
Intuitive parking assist
*
Key reminder ...................................... 469
Open door ............................................443
Open moon roof .............................. 456
Open hood ...........................................443
Open trunk ...........................................443
Open window .................................... 456
Seat belt reminder .............................436
Warning lights .......................................... 80 ABS...........................................................434
AFS OFF indicator ............................435
Brake system............................434, 436
Charging system................................434
Electric power steering...................435
Low fuel level .......................................436
Malfunction indicator lamp ...........434
Master warning light.........................436
Open door ............................................436
Parking brake indicator ..................436
Pre-collision system..........................435
Seat belt reminder light...................436
Slip indicator .........................................435
SRS ............................................................434
Tire pressure ........................................436 Warning messages................................ 441
Warning reflector storage belt .......337
Washer ......................................................223
Checking ............................................... 392
Low washer fluid warning message............................. 441
Preparing and checking before winter .................................... 296
Switch ...................................................... 223
Washing and waxing .......................... 358
Weight Cargo capacity.....................................194
Load limits ...............................................194
Weight ..................................................... 518
Welcome light illumination control .....................................................138
Wheels Replacing ...............................................406
Size ...........................................................528
Window glasses...................................... 175
Window lock switch.............................. 175
Windows.................................................... 175 Power windows.................................... 175
Rear window defogger .................... 314
Washer ................................................... 223
Windshield wiper de-icer ................... 314
Windshield wipers ................................223 Position ................................................... 299
Rain-sensing windshield wipers................................................... 223
W
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.