2008 LEXUS RX400H tire pressure

5
When trouble arises
405
5-2. Steps to take in an emergency
RX400h_U
Wa r n i n g m e s s a g eDetailsCorrection procedure
Indicates low tire pres-
sure.Check the tire inflation
pressure, and adjust to the
appropriate level.
(If equipped, flashing
and then continuously on)
(Flashing)Indicates that the radar
cruise control sensor is
dirty or covered with ice.
Clean the sensor.

5
When trouble arises
415
5-2. Steps to take in an emergency
RX400h_U
Stowing the flat tire, jack and all toolsInstall the inside spare tire cover on the outer side of the spare tire
cover. Put the flat tire in the spare tire
cover with the outer side facing up
and install the holding bracket.
Turn the spare tire clamp bolt clockwise with a jack handle and
adapter socket until you hear a click.
Stow all the tools and jack securely.
STEP1
STEP2
■After completing the tire change
The tire pressure warning system must be reset. ( →P. 3 3 2 )
STEP3
STEP4

5
When trouble arises
417
5-2. Steps to take in an emergency
RX400h_U
NOTICE
■Do not drive the vehicle with a flat tire.
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
■To avoid damaging the tire pressure warning valves and transmitters
Do not use liquid sealants on flat tires.
■When stowing the flat tire
●Ensure that there is no object caught between the tire and the vehicle underbody.
●Tighten the spare tire clamp bolt to hold the spare wheel carrier by the hook
securely.

439
6-1. Specifications
6
Vehicle specifications
RX400h_U
Steering
Tires and wheelsType A
Free playLess than 1.2 in. (30 mm)
Ti r e s i z e225/65R17 101S
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions Front:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Rear:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Spare:
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Driving at high speeds above 100 mph (160
km/h) (in countries where such speeds are per-
mitted by law) Add 1.5 psi (10 kPa, 0.1 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.
Wheel size17 × 6 1 /2 J
Wheel nut torque10.5 kgf•m (103 N•m, 76 ft•lbf)

440
6-1. Specifications
RX400h_UTy p e B
Ti r e s i z eP235/55R18 99V
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions
Front:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Rear:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Spare:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Wheel size18 × 7 J
Wheel nut torque10.5 kgf•m (103 N•m, 76 ft•lbf)

445
6-1. Specifications
6
Vehicle specifications
RX400h_U
Tire section names
Ty p i c a l t i r e s y m b o l s
Tire size(→ P. 4 4 7 )
DOT and Tire Identification Number (TIN) (→P. 4 4 6 )
Location of treadwear indicators (→ P. 3 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.
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. 3 3 6 )
Maximum cold tire inflation pressure ( →P. 4 3 9 )
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform tire quality grading” that follows.

451
6-1. Specifications
6
Vehicle specifications
RX400h_U
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire 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
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, 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)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine
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

453
6-1. Specifications
6
Vehicle specifications
RX400h_U
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