2014 Lexus IS250C spare tire

566
6-1. Specifications
IS250C/350C_UTy p e 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 conditions
Front:
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)

573
6-1. Specifications
6
Vehicle specifications
IS250C/350C_U
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. 5 76 )
DOT and Tire Identification Number (TIN) (→ P. 575)
Location of treadwear indicators ( →P. 4 3 1 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.

574
6-1. Specifications
IS250C/350C_U
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. 4 3 7 )
Maximum cold tire inflation pressure ( →P. 563)
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. 4 3 7 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
“TEMPORARY USE ONLY” (→ P. 5 1 8 )
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. 5 76 )
This vehicle can be equipped with either run-flat tires (RFT) or standard
tires. A “RFT” or “DSST” mark is molded on the sidewall of the run-flat
tire.

619
Alphabetical index
IS250C/350C_U
Side mirrorAdjusting and folding ..........................79
Mirror position memory ..................... 61
Smart access system with
push-button startEntry function ..........................................32
Starting the engine.............................. 147
“SOS” button ......................................... 388
Spare tire Inflation pressure ................................. 441
Storage location...................................513
Spark plug ............................................... 560
Specifications......................................... 552
Speedometer
Speed indicator ......................................161
Speedometer ..........................................161
Steering wheel Adjustment ...............................................76
Audio switches ...................................300
Steering wheel position
memory ................................................... 61
Storage feature ..................................... 356 Stuck
If your vehicle becomes stuck .... 539
Sun visors .................................................363
Switch All window control switch ................ 82
ECT switch............................................. 152
Emergency flasher switch .............482
Engine switch ......................................... 147
Fog light switch ....................................180
Hazard light switch ...........................482
Ignition switch ........................................ 147
Light switches ........................................176
Power door lock switch .................... 47
Power window switch ........................ 82
Roof switch...............................................86
Satellite switches................................ 366
Transmission shift switches ..................................... 153, 155
VSC off switch ......................................216
Window lock switch............................83
Wiper and washer switch............... 182

620
Alphabetical index
IS250C/350C_U
TachometerTacho indicator...................................... 161
Tachometer ............................................. 161
Tail lights
Switch ........................................................ 176
Talk switch* ............................................. 326
Telephone switch*................................ 326
Theft deterrent system
Alarm ........................................................ 100
Engine immobilizer system ............. 98
Theft prevention labels ........................ 103
Tire inflation pressure .......................... 441
Tire information Glossary................................................. 579
Size ........................................................... 576
Tire identification number ............. 575
Uniform tire quality grading ......... 577
Tires
Chains ..................................................... 233
Checking ................................................. 431
If you have a flat tire............................513
Inflation pressure.................................. 441
Inflation pressure sensor................ 432
Information............................................ 573
Replacing.................................................513
Rotating tires .......................................... 431
Run-flat tire............................................ 522
Size ...........................................................563
Snow tires .............................................. 233
Spare tire..................................................513
Tools ............................................................ 513
Total load capacity ............................... 232 Towing
Dinghy towing .................................... 238
Emergency towing ........................... 483
Trailer towing ....................................... 237
TRAC ..........................................................214
Traction control.......................................214
Transmission shift switches...... 153, 155
Trip meter ................................................... 161
Trunk Opener ....................................................... 51
Trunk light Trunk light ................................................. 52
Wattage ................................................. 568
Turn signal lights
Replacing light bulbs ....................... 468
Switch........................................................158
Wattage ................................................. 568
USB port* ................................................ 287
Vanity lights Vanity lights.......................................... 364
Wattage ................................................. 568
Vanity mirrors ........................................ 364
VDIM...........................................................214
Vehicle data recordings ......................... 21
Vehicle dynamics integrated management .........................................214
Vehicle identification number ......... 553
Vehicle stability control .......................214
Ventilators ............................................... 372
Voice command switch* ................... 327
VSC ............................................................. 214T
U
V