tire size Lexus IS350 2018 / LEXUS 2018 IS300,IS350 (OM53E34U) Owner's Guide

5999-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Full-size tire
Compact spare tire
Tire information
Typical tire symbols

6009-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Tire size (→ P. 602)
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.
Summer tires or all season tires (→ P. 487)
An all season tire has “M+S” on the side wall. A tire not marked “M+S” is a summer
tire.
Maximum cold tire inflation pressure (→ P. 606)
This means the pressure to which a tire may be inflated.
Load limit at maximum cold tire inflation pressure (→ P. 606)
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.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
DOT and Tire Identification Number (TIN) (→ P. 601)
Location of trea dwear indicators (→ P. 483)
“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

6019-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
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 co nforms to applicable Federal Motor Vehicle
Safety Standards.
Typical DOT and Tire Identification Number (TIN)
Type AType B
1
2
3
4
5
6
7
8

6029-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■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)
■Tire dimensions
Section width
Tire height
Wheel diameter
Tire size
1
2
3
4
5
6
7
1
2
3

6079-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
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
tire
The 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
BeadThe 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
Cord separationThe parting of cords from adjacent rubber compounds
CrackingAny parting within the tread, sidewall, or innerliner of
the tire extending to cord material
Tire related termMeaning

653Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Tachometer .................................................81
Tail lights.....................................................194
Light switch ............................................ 194
Replacing light bulbs ....................... 509
Talk switch
*............................................ 373
Telephone switches
*.......................... 373
Theft deterrent system Alarm............................................................. 71
Engine immobiliz er system..............68
Luggage security system .................123
Theft prevention labels ....................... 74
Tire inflation pressure ......................... 493 Maintenance data ............................. 593
Tire inflation pressure display function ............................................... 484
Warning light .......................................524
Tire information ..................................... 599 Glossary ................................................ 606
Size ........................................................... 602
Tire identification number............... 601
Uniform Tire Quality Grading.............................................. 604
Tire pressure warning system ......... 484 Initializing............................................... 485
Installing tire pressure warning valves and transmitters ............... 484
Registering ID codes ...................... 485
Tire pressure warning reset switch................................................... 485
Warning light .......................................524 Tires ........................................................... 483
Chains ..................................................... 298
Checking ...............................................483
If you have a flat tire ..........................556
Inflation pressure................................593
Information............................................599
Replacing ...............................................556
Rotating tires ........................................ 484
Size ...........................................................593
Snow tires .............................................. 299
Spare tire................................................556
Tire inflation pressure display function................................................ 484
Tire pressure warning system ..... 484
Warning light ....................................... 524
Tools ...........................................................557
Top tether strap ........................................64
Total load capacity................................. 175
Towing Dinghy towing ....................................... 177
Emergency towing .............................514
Towing eyelet ........................................ 517
Trailer towing......................................... 176
TRAC (Traction Control)..................292
Transmission ............................................183 Automatic transmission ................... 183
Driving mode select switch ..........288
If the shift lever cannot be shifted from P .................................... 188
M mode ................................................... 186
Paddle shift switches......................... 185
T
*: For vehicles with a naviga tion system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

655Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Warning buzzers
Downshifting ......................................... 187
Driver’s and front passenger’s seat belt reminder ..........................524
Key reminder ...................................... 552
Open door ............................................524
Open hood ...........................................532
Open moon roof ...............................542
Open trunk ...........................................532
Open window .....................................542
Rear passengers’ seat belt reminder .............................................524
Warning lights ........................................... 77 ABS........................................................... 522
AFS............................................................524
Brake system........................................ 522
Charging system................................ 522
Driver’s and front passenger’s seat belt reminder light ................524
Electric power steering...................523
Low fuel level .......................................524
Malfunction indicator lamp ........... 522
Master warning light.........................524
Open door ............................................524
Pre-collision system..........................523
Rear passengers’ seat belt reminder lights .................................524
Slip indicator .........................................523
SRS ............................................................ 522
Tire pressure ........................................524
Warning messages .............................. 529 Washer ..................................................... 202
Checking ............................................... 482
Preparing and checking before winter .................................... 297
Switch ...................................................... 202
Washing and waxing ...........................452
Weight Cargo capacity..................................... 175
Load limits ............................................... 175
Weight ....................................................584
Wheels ......................................................496 Replacing wheels .............................. 496
Size ...........................................................593
Window lock switch.............................. 154
Windows.................................................... 154 Power windows....................................154
Rear window defogger .................... 412
Windshield wiper de-icer ................... 412
Windshield wipers ............................... 202 Intermittent windshield wipers with interval adjuster ..... 202
Rain-sensing windshield wipers................................................... 204
Winter driving tips ................................ 297
Wireless remote control ...................... 110 Battery-Saving Function ..................128
Locking/Unlocking ................... 116, 122
Replacing the battery ..................... 500
WMA disc............................................... 336
XM
® Satellite Radio ........................... 330
W
X