2008 Lexus IS250 inflation pressure

430
6-1. Specifications
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
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
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
Tire related termMeaning

432
6-1. Specifications
Tire related termMeaning
Bead
The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separationA breakdown of the bond between components in
the bead
Bias ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at alternate 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 the plies in the tire
Cord separationThe parting of cords from adjacent rubber com-
pounds
CrackingAny parting within the tread, sidewall, or innerliner of
the tire extending to cord material
CT
A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit
on the underside of the rim in a manner that encloses
the rim flanges inside the air cavity of the tire
Extra load tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the inside surface of a tubeless
tire that contains the inflating medium within the tire
Innerliner separationThe parting of the innerliner from cord material in the
carcass

433
6-1. Specifications
6
Vehicle specifications
Tire related termMeaning
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 an asymmetrical tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressureThe maximum cold inflation pressure to which a tire
may be inflated
Measuring rimThe rim on which a tire is fitted for physical dimension
requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to
labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10000 lb. or
less.
PlyA layer of rubber-coated parallel cords

434
6-1. Specifications
Tire related termMeaning
Ply separationA parting of rubber compound between adjacent
plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fab-
ric and steel or other mate rials, that, when mounted
on an automotive wheel, provides the traction and
contains the gas or fluid that sustains the load
Radial ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at substantially 90 degrees to the
centerline of the tread
Reinforced tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width
The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe parting of the rubber compound from the cord
material in the sidewall
Snow tire
A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard
Reference Test Tire, when using the snow traction test
as described in ASTM F-1805-00, Standard Test
Method for Single Wheel Driving Traction in a
Straight Line on Snow-and Ice-Covered Surfaces,
and which is marked with an Alpine Symbol (
)
on at least one sidewall
Te s t r i mThe rim on which a tire is fitted for testing, and may be
any rim listed as appropriate for use with that tire

441
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Pow e r w i n d owAfter reconnecting or changing the
batteryP. 6 4
Engine oil maintenance
dataAfter changing engine oilP. 2 9 5
Tire pressure warning
system
• When rotating the tires differing with front and rear tire inflation pressures.
• When changing the tire inflation pressure by changing traveling
speed.
• When changing the tire size.
P. 3 0 7
The following item must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

458
Alphabetical index
Shift leverAutomatic transmission .................... 122
If the shift lever cannot be shifted from P ................................... 392
Manual transmission .......................... 126
Shift lever lighting .................................. 231
Shift lock system ....................................392
Shopping bag hooks............................. 261
Side airbags................................................ 79
Side marker lights Switch ........................................................ 143
Side mirror Adjusting and folding ........................... 61
Mirror position memory ................... 46
Smart access system with push-button startEntry function...........................................22
Starting the engine ................................ 117
Spare tire Inflation pressure..................................316
Spare tire................................................ 382
Spark plug ................................................... 411
Specifications .........................................406
Speech command switch*
Speedometer Speed indicator ................................... 130
Speedometer........................................ 130 Steering wheel
Audio switches ....................................229
Manual adjustment .............................. 58
Power adjustment................................ 59
Steering wheel positionmemory ..................................................46
Storage feature ..................................... 236
Stuck If your vehicle becomes stuck .... 402
Sun visors ................................................. 242
Sunshade Rear .......................................................... 256
Roof .............................................................. 67
Switch ECT switch ............................................. 123
Engine switch .......................................... 117
ETCS switch .......................................... 126
Fog light switch .................................... 146
Ignition switch ......................................... 117
Light switches........................................ 143
Power door lock switch..................... 37
Power window switch ........................64
Satellite switches................................ 245
Transmission shift switches ............ 124
Window lock switch ............................64
Wipers and washer switch............. 147

459
Alphabetical index
TachometerTacho indicator ....................................130
Tachometer ............................................130
Tail lights Switch ........................................................ 143
Talk switch*
Telephone switch*
Theft deterrent system Alarm ........................................................... 74
Engine immobilizer system .............. 72
Theft prevention labels .......................... 76
Tire inflation pressure........................... 316
Tire information Glossary ................................................ 429
Size ........................................................... 426
Tire identification number ............. 426
Uniform tire quality grading..........427
Tires Chains .......................................................183
Checking ............................................... 306
If you have a flat tire.......................... 382
Inflation pressure ................................. 316
Inflation pressure sensor................308
Information.............................................424
Replacing............................................... 382
Rotating tires ........................................ 306
Size ............................................................. 415
Snow tires................................................183
Tools .......................................................... 382
Total load capacity................................. 182 Towing
Dinghy towing ........................... 188, 189
Emergency towing........................... 350
Trailer towing ........................................ 187
TRAC.......................................................... 170
Traction control ...................................... 170
Transmission shift switches ................ 124
Trip meter ................................................. 130
Trunk Extending a space ............................ 258
Opener ........................................................ 41
Trunk light Trunk light ................................................. 42
Wattage ..................................................420
Turn signal lights Replacing light bulbs ........................ 342
Switch........................................................ 128
Wattage ..................................................420T
*: Refer to the “Navigatio n System Owner’s Manual”

464
GAS STATION INFORMATION
Auxiliary catch leverP. 2 8 9Trunk openerP. 4 1Fuel filler door P. 6 9
Hood lock release lever P. 2 8 9Fuel filler door openerP. 6 9Tire inflation pressureP. 4 1 5
Fuel tank capacity17.2 gal. (65 L, 14.3 lmp.gal.)
Fuel typeUnleaded gasoline only P. 70, 409
Cold tire inflation
pressureP. 4 1 5
Engine oil capacity
(Drain and refill)
qt. (L, Imp.qt.)
IS250 IS250
(2WD models) (AWD models) IS350
With filter 6.6 (6.3, 5.5) 6.8 (6.4, 5.7) 6.6 (6.3, 5.5)
Without filter 6.2 (5.9
, 5.2)6.3 (6.0, 5.3) 6.2 (5.9, 5.2)
Engine oil type
Toyota Genuine Motor Oil or equivalent
Oil grade: ILSAC multigrade engine oil P. 410
Recommended oil viscosity: SAE 5W-30