2012 Lexus IS250C spare tire

575
6-1. Specifications
6
Vehicle specifications
Type D
Ti r e s i z e
Front tires: 225/40R18 88W
Rear tires: 255/40R18 95W
Spare tire: T145/70D17 106M
Front and rear tire inflation pres-
sure
(Recommended cold tire inflation
pressure)
Driving under normal conditionsFront:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)*
Rear:
38 psi (260 kPa, 2.6 kgf/cm
2 or bar)*
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
*: When driving at high speeds above 100 mph (160 km/h), in countries where such speeds
are permitted by law, add 7.2 psi (50 kPa, 0.5
kgf/cm
2 or bar) to the front tires and rear
tires. Never exceed the maximum cold tire
inflation pressure indicated on the tire side-
wall.
Wheel size
Front wheels: 18  8J
Rear wheels: 18 8 1 /2J
Spare wheel: 17  4T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

582
6-1. Specifications
Tire information
Ty p i c a l t i r e s y m b o l s
Standard tire
Compact spare tire
Tire size (P. 585)
DOT and Tire Identification Number (TIN) ( P. 584)
Location of treadwear indicators ( P. 4 3 7 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.

583
6-1. Specifications
6
Vehicle specifications
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 filled in the tire. A
tube type tire has a tube inside the ti re and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure ( P. 443)
Maximum cold tire inflation pressure ( P. 5 7 2 )
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 tire or all season tire (P. 443)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
“TEMPORARY USE ONLY” ( P. 523)
A compact spare tire is identified by the phrase “TEMPORARY USE
ONLY” molded into its sidewall. This tire is designed for temporary
emergency use only.
Run-flat tire (RFT) or standard tire ( P. 585)
This vehicle can be equipped with ei ther run-flat tires (RFT) or standard
tires. A “RFT” or “DSST” mark is molded on the sidewall of the run-flat
tire.

627
Alphabetical index
Side mirrorAdjusting and folding ..........................79
Mirror position memory ..................... 61
Smart access system with push-button startEntry function ..........................................32
Starting the engine..............................148
“SOS” button ......................................... 394
Spare tire Inflation pressure ................................447
Storage location.................................. 518
Spark plug ............................................... 568
Specifications......................................... 560
Speedometer Speed indicator ....................................166
Speedometer ........................................166
Steering wheel Adjustment ...............................................76
Audio switches ................................... 306
Steering wheel positionmemory ................................................... 61
Storage feature ....................................... 361 Stuck
If your vehicle becomes stuck .... 545
Sun visors .................................................368
Switch All window control switch ................ 82
ECT switch............................................. 154
Emergency flasher switch ............ 486
Engine switch ........................................ 148
ETCS switch ............................................ 161
Fog light switch .................................... 185
Hazard light switch .......................... 486
Ignition switch ....................................... 148
Light switches ......................................... 181
Power door lock switch .................... 47
Power window switch ........................ 82
Roof switch...............................................86
Satellite switches...................................371
Transmission shift switches ......................................155, 157
Window lock switch............................83
Wiper and washer switch............... 187

628
Alphabetical index
TachometerTacho indicator.....................................166
Tachometer ............................................166
Tail lights Switch ......................................................... 181
Talk switch* .............................................332
Telephone switch*................................332
Theft deterrent system Alarm ........................................................ 100
Engine immobilizer system ............. 98
Theft prevention labels ........................ 103
Tire inflation pressure ......................... 447
Tire information Glossary................................................ 588
Size .......................................................... 585
Tire identification number .............584
Uniform tire quality grading ........ 586
Tires Chains ..................................................... 238
Checking ............................................... 437
If you have a flat tire ........................... 518
Inflation pressure................................ 447
Inflation pressure sensor................438
Information............................................582
Replacing ................................................ 518
Rotating tires ........................................ 437
Run-flat tire............................................ 527
Size ........................................................... 572
Snow tires .............................................. 238
Spare tire................................................. 518
Tools ............................................................ 518
Total load capacity ............................... 237 Towing
Dinghy towing ......................... 243, 244
Emergency towing ........................... 487
Trailer towing ....................................... 242
TRAC ..........................................................219
Traction control.......................................219
Transmission shift switches.......155, 157
Trip meter ..................................................166
Trunk Opener ....................................................... 51
Trunk light Trunk light .................................................52
Wattage ..................................................577
Turn signal lights Replacing light bulbs ........................475
Switch ........................................................ 162
Wattage ..................................................577
USB port* ................................................ 293
Vanity lights Vanity lights.......................................... 369
Wattage ..................................................577
Vanity mirrors ........................................ 369
VDIM...........................................................219
Vehicle dynamics integrated management .........................................219
Vehicle identification number...........561
Vehicle stability control .......................219
Ventilators ................................................377
Voice command switch* ................... 333
VSC .............................................................219T
U
V