2006 Lexus IS250 wheel

381
6-1. Specifications
6
Vehicle specifications
Type D
Ti r e s i z e
Front tires: 225/45R17 95V
Rear tires: 245/45R17 95V
Spare tire: T125/70R17 98M
Front and rear tire inflation pres-
sure
(Recommended cold tire inflation
pressure)
Driving under normal conditionsFront tires:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear tires:
38 psi (260 kPa, 2.6 kgf/cm
2 or bar)
Driving at high speeds above 100 mph (160
km/h) (in countries where such speeds are per-
mitted by law) Add 10 psi (70 kPa, 0.7 kgf/cm
2 or bar) to the
front tires and rear tires. Never exceed the
maximum cold tire inflation pressure indicated
on the tire sidewall.
Spare tire inflation pressure
(Recommended cold tire inflation
pressure)
60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Wheel size17  8JJ, 17  4T (spare)
Wheel nut torque10.5 kgf•m (103 N•m, 76 ft•lbf)

382
6-1. Specifications
Ty p e E
Ti r e s i z e
Front tires: 225/40R18 88Y
Rear tires: 255/40R18 95Y
Spare tire: T145/70R17 106M
Front and rear tire inflation pres-
sure
(Recommended cold tire inflation
pressure)
Driving under normal conditions Front tires:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear tires:
38 psi (260 kPa, 2.6 kgf/cm
2 or bar)
Driving at high speeds above 100 mph (160
km/h) (in countries where such speeds are per-
mitted 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 sidewall.
Spare tire inflation pressure
(Recommended cold tire inflation
pressure)
60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Wheel size
Front wheels: 18  8J
Rear wheels: 18 8 1 /2J
Spare wheel: 17  4T
Wheel nut torque10.5 kgf•m (103 N•m, 76 ft•lbf)

389
6-1. Specifications
6
Vehicle specifications
Tire size■ Typical tire size information
The illustration indicates typical
tire size.
Ti r e u s e
(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 or 3 digits)
Speed symbol
(alphabet with one letter)
■ Tire dimensions
Section width
Ti r e h e i g h t
Wheel diameter

391
6-1. Specifications
6
Vehicle specifications
■Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controll ed conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100.
The relative performance of tires de pends upon the actual conditions of
their use, however, and may depart significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.
■ Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent the tire's ability to stop on wet pavement as measured
under controlled condit ions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turning) trac-
tion.
■ Temperature A, B, C
The temperature grades are A (the hi ghest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Mo tor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.

393
6-1. Specifications
6
Vehicle specifications
Tire related termMeaning
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 replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle's designated seating capacity
Intended outboard side-
wall
(a) The sidewall that contains a whitewall, bears white lettering, or bear s manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of asymmetrical tire that has a particular side that must always face
outward when mounted on a vehicle
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer.
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

399
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Pow e r w i n d ow
• After reconnecting or changing the battery
• After changing a fuse
P. 4 1
Engine oil maintenance
dataAfter changing engine oilP. 2 6 4
Tire inflation pressure
warning system
• When the standard tire pressure changes by replacing tires or wheels
• When tires are rotated
• When tire pressure sensors are
replaced
• When driving with the tires inflated to a higher than standard tire pressure
P. 2 76
After reconnecting or performing main tenance on the battery, the follow-
ing items must be initialized for normal system operation.

404
Alphabetical index
Alphabetical index
A/C (Air conditioning system) ........ 162
ABS (Anti-lock brake system) ......... 139
Air conditioning filter ........................... 291
Air conditioning system (A/C)Air conditioning filter ......................... 291
Automatic air conditioning system .................................................... 162
Airbags Airbag operating conditions........... 59
Airbag precautions for your child.......................................................... 63
Airbag warning light ........................330
Curtain shield airbag operating conditions.............................................. 59
Curtain shield airbag
precautions .......................................... 63
General airbag precautions ........... 63
Locations of airbags............................ 57
Modification and disposal of airbags .................................................... 67
Proper driving po sture ............. 55, 63
Side airbag operating conditions.............................................. 59
Side airbag precautions .................... 63
SRS airbags ............................................. 57
Alarm ............................................................ 52
Antenna ..................................................... 178
Anti-lock brake system (ABS) ......... 139
Armrest ..................................................... 224
Ashtrays ......................................................217
Audio system Antenna ............................................... 178
AUX adapter........................................ 198
CD player/changer ............................ 181
MP3/WMA disc .................................187
Optimal use........................................... 195 Radio ......................................................... 174
Steering wheel audio switch.......... 199
Automatic air conditioning system ......................................................162
Automatic headlight leveling system ....................................................... 115
Automatic light control system.......... 113
Automatic transmission Automatic transmission ..................... 92
If the shift lever cannot be shifted from P....................................357
S mode .......................................................94
AUX adapter .......................................... 198
BA (Brake assist) ....................................139
Back-up lights Wattage ................................................. 383
Battery Checking..................................................271
If the vehicle has discharged battery ..................................................362
Preparing and checking before winter........................................151
Bottle holders......................................... 209
Brake Fluid ...........................................................270
Parking brake..........................................99
Brake assist (BA) ....................................139
Care Exterior ....................................................244
Interior......................................................246
Seat belts ................................................ 247
Cargo capacity........................................ 147
Cargo hooks .......................................... 230
CD changer ............................................... 181A
B
C

407
Alphabetical index
Front passenger's seat belt reminder light ....................................... 331
Front seats Adjustment ............................................... 22
Driving position memory ..................24
Seat position memory ......................... 27
Front turn signal lights Wattage ................................................. 383
Fuel Capacity..................................................372
Fuel gauge ............................................. 100
Fuel pump shut off system ............ 326
Gas station information ................... 415
Information............................................ 384
Refueling .................................................... 47
Fuel filler door............................................ 47
Fuel pump shut off system .................326
Fuses.......................................................... 295
Garage door opener.......................... 233
Gas station information ....................... 415
Gauges...................................................... 100
Glove box ............................................... 205
Glove box light...................................... 206
Head restraints Adjusting ..................................................29
Headlight aim ........................................ 309
Headlight cleaner .................................. 120
Headlights Discharge headlights precautions ......................................... 316
Replacing light bulbs .........................310
Switch ..........................................................113
Wattage ................................................. 383 Heaters
Seat heaters .............................. 220, 222
Side mirror.............................................. 170
Hill-start assist control ......................... 139
Hood ..........................................................258
Hooks Cargo ......................................................230
Coat..........................................................228
Shopping bag ......................................230
I/M test...................................................... 254
Illuminated entry system ....................202
Indicator lights......................................... 106
Initialization Items to initialize ................................ 399
Inside rear view mirror ..........................38
Interior lights Interior lights .......................................... 201
Switch.......................................................203
Wattage ................................................. 383
Jack Positioning the jack ...........................259
Replacing the wheel ........................ 348
Jack handle..............................................348
Keys Electronic key .............................................2
Engine switch ..........................................89
If you lose your keys ........................ 358
If your electronic key battery is discharged.................................... 359
Key number .................................................2
Keys .................................................................2
Mechanical key ..........................................2
Wireless remote control ..................... 12
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