flat tire LEXUS LS430 2006 Owner's Manual

5
When trouble arises
351
5-2. Steps to take in an emergency
Firmly tighten each nut two or
three times in the order shown in
the illustration.Tightening torque: 
76 f t
•lbf (105 N•m, 10.5 kgf•m)
Place the center ornament from the removed tire on the tire
installed on the vehicle.
Center ornaments cannot be installed on the spare tire.
Stow the flat tire, tire jack and all
tools.
Check the following when stowing
the tire jack and tire. • The tire jack should be firmly secur
ed in the carrier.
• The tire should be secured with the
bolt.

352
5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or injuries due to the vehicle sud-
denly falling off the jack. 
Observe the following precautions to prevent accidents.
• Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
• Only use the tire jack that comes with this vehicle for replacing a flat tire. 
Do not use this tire jack on other vehicl
es, and do not use other tire jacks for
replacing tires on this vehicle.
• Always check that the tire jack is securely set to the jack point.
• Do not raise the vehicle while someone is in it.
• When raising the vehicle, do not put an object on or under the jack.
• Do not raise the vehicle to a height greate r than
that required to replace the tire.
• Do not put any part of your body under the vehicle supported by a jack.
• Do not start or run the engine while your vehicle is supported by the jack.
• Use a jack stand if it is necessary to get under the vehicle.
• Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Replacing a flat tire
Observe the following precautions to reduce
the risk of death or serious injury.
• Never use oil or grease on the wheel bolts or wheel nuts. 
The oil or grease can cause the wheel nuts to loosen, causing a serious accident.
R
emove any oil or grease on the wheel bolts or wheel nuts.
• Have the wheel nuts tightene d with a tor
que wrench to 76 f t•lbf (105 N•m, 10.5
kgf
•m) as soon as possible after changing wheels. 
Failure to follow these pre-cautions could cause, the wheel nuts to loosen and the
w
heels may fall off, which could lead to an accident causing death or serious injury.
NOTICE
■Do not drive the vehicle with a flat tire.
Do not continue driving with a flat tire. 
Driving even a short distance can damage a tire and wheel beyond repair.

370
6-1. Specifications
Tires and wheels (Type A)
Tires and wheels (Type B)
Ti r e s i z eP225/55R17 95H
Tire inflation pressure
(Recommended cold 
tire inflation pressure)
Driving in normal conditions
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Driving in high speeds above 100 mph (160
km/
h) 
(in countries where such speeds are permitted
b

y law)
Add 3 psi (20 kPa, 0.2 kgf/cm
2 or bar) to
the front tires and rear tires. Never exceed
the maximum cold tire inflation pressure
molded on the tire sidewall.
Wheel size17  7 1 /2 JJ
Wheel nut torque76 f t•lbf. (103 N•m, 10.5 kgf•m)
Ti r e s i z e245/45R18 96W
Tire inflation pressure
(Recommended cold 
tire inflation pressure)
Driving in normal conditions
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Driving in high speeds above 100 mph (160
km/
h) 
(in countries where such speeds are permitted
b
y law)
Add 6 psi (40 kPa, 0.4 kgf/cm
2 or bar) to
the front tires and rear tires. Never exceed
the maximum cold tire inflation pressure
molded on the tire sidewall.
Wheel size18  7 1 /2 JJ
Wheel nut torque76 f t•lbf. (103 N•m, 10.5 kgf•m)

371
6-1. Specifications
6
Vehicle specifications
Tires and wheels (Type C)
Ti r e s i z eP245/45R18 96V
Tire inflation pressure
(Recommended cold 
tire inflation pressure)
Driving in normal conditions
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Driving in high speeds above 100 mph (160
km/
h) 
(in countries where such speeds are permitted
b

y law)
Add 6 psi (40 kPa, 0.4 kgf/cm
2 or bar) to
the front tires and rear tires. Never exceed
the maximum cold tire inflation pressure
molded on the tire sidewall.
Wheel size18  7 1 /2 JJ
Wheel nut torque76 f t•lbf. (103 N•m, 10.5 kgf•m)

376
6-1. Specifications
Tire information
Ty p i c a l t i r e s y m b o l s
Tire size(P.377 )
DOT and Tire Identification Number (TIN) ( P.377 )
Location of tread wear indicators ( P.278 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.
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 tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( P.283 )
1
2
3
4
5
6
7

377
6-1. Specifications
6
Vehicle specifications
Typical DOT and tire identification number (TIN)
“DOT” symbol*
Tire Identification Number (TIN)
Tire manufacturer’s identifica -
tion mark
Tire size code
Manufacturer’s optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
* The “DOT” symbol certifies that the tire conforms to applicable
Federal Motor Vehicle Safety
Standards.
Maximum cold tire inflation pressure ( P.364 )
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.379 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
8
9
10
1
2
3
4
5
6
7

381
6-1. Specifications
6
Vehicle specifications
■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
tir
es must meet under the Federal Moto r Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum r
equired by law.
Warning: The temperature grades for this tire are established for a tire that
is pr
operly inflated and not overloaded. 
Excessive speed, under inflation, or ex ces
sive loading, either separately or
in combination, can cause heat buildup and possible tire failure.

382
6-1. Specifications
Glossary of tire terminology
Tire related termDefinition
Accessory weight
The combined weight (in excess of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Cold tire inflation 
pressure
Tire pressure when the vehicle has been parked for three
hours or more, or has not been driven more than 1 mile or
1.5 km under that condition
Curb weight
The weight of a motor vehicl e with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air conditioning and additional weight
optional engine
Maximum inflation 
pressure
The 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 numb er of occupants specified
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 stan -
dard 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

383
6-1. Specifications
6
Vehicle specifications
*: Table 1  Occupant loading and distribution for vehicle normal load for various
designated seating capacities
Tire related termDefinition
Intended outboard 
sidewall
(a) The sidewall that contains a whitewall, bears white
lettering, or bears manufacturer, brand, and/or model
name molding that is higher or deeper than the same
molding on the other sidewall 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 pressure
Cold tire inflation pressure recommended by a manufac -
turer.
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
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 share of curb weight, accessory
weight, and normal occupant weight (distributed in
accordance with Table 1* below), and dividing it by two
We a t h e r s i d eThe surface area of the rim not covered by the inflated
tire
Designated seating capac -
ity, Number of occupants
Vehicle normal load, Num -
ber of occupants
Occupant distribution in a
normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat

387
6-2. Owner’s customize
6
Vehicle specifications
Initializing your Lexus
ItemMaintenance performedReference
Po w e r w i n d o wReconnected, replaced or
recharged battery.P. 4 5
Moon roofReconnected, replaced or
recharged battery.P. 4 8
Tire pressure warning sys-
tem
Adjusted tire inflation
pressure, replaced tires or
wheels.
P. 2 7 9
Engine oil maintenance
dataChanged engine oil.P. 2 6 5
Air conditioning filter clog-
ging data
Replaced air conditioning
filters.P. 2 9 3
The following features must be initialized after certain maintenance is per-
formed to ensure the system operates correctly.