flat tire LEXUS LS600H 2015 Service Manual

5157-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
■Run-flat tires (A “RFT” or “DSST” mark is molded on the sidewall)
Take your vehicle to the nearest
Lexus dealer or authorized tire
dealer as soon as possible if any
tire goes flat.
The vehicle can be driven for a
maximum of 99 miles (160 km) at a
speed below 50 mph (80 km/h)
after the tire pressure warning light
comes on. (P. 4 9 7 )
■In some conditions (such as at high temperatures)
You cannot continue driving fo r up to 99 miles (160 km).
■For the detailed information on run-flat tires
See the tire warranty booklet.
■When replacing the tires
P. 5 1 0
If you have a flat tire (vehicles with run-flat
tires)
Your vehicle is not equipped with a spare tire, but instead you can con-
tinue driving the vehicle with run-flat tires even if any tire goes flat.
In this case, slow down and drive with extra caution.

5167-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
■Location of the jack and toolsLift up the handle and fold the trunk floor back. ( P. 3 74 )
Remove the tool tray cover.
Jack handle
Towing eyelet
Parking brake release tool
Jack*
Screwdriver
Wheel nut wrench
*: Use of the jack ( P. 5 1 0 )
NOTICE
■When replacing the tires
When removing or fitting the wheels, tire s 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.
■When driving over bumps
If a vehicle has a flat tire, the vehicle height will be lower than usual. Ensure that
nothing strikes the bottom of the vehicle.
■To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid seal ants, the tire pressure warning valve and
transmitter may not operate properly. If a liquid sealant is used, contact your Lexus
dealer or other qualified service shop as soon as possible. Make sure to replace
the tire pressure warning valve and transmitter when replacing the tire. ( P. 455)
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5217-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
Remove the plug.
Insert the tool and press it down
firmly while turning it counter-
clockwise until it stops.
Vehicles with run-flat tires
Take out the parking brake release tool and the screwdriver from the
trunk. ( P. 5 1 6 )
Check that the flathead end of
the screwdriver is exposed.
If the Phillips end is exposed, reinsert
the screwdriver shaft so the flathead
end is exposed.
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5
1
Phillips end
Flathead end
2

5237-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
Insert the tool and press it down
firmly while turning it counter-
clockwise until it stops.
■When installing the tool tray cl ips (vehicles with run-flat tires)
■Manual operation of the parking brake
The parking brake cannot be set manually.
7
CAUTION
■When releasing the parking brake manually
●Shift the shift lever to P, turn the power switch off and chock the tires.
Failure to do so may cause the vehicle to move, resulting in an accident.
●Turn the power switch off and check that the parking brake indicator is off.
Failure to do so may cause the system to operate and turn the inserted parking
brake release tool, resulting in an injury.
Install the clips as shown in the illustration.

5468-1. Specifications
LS600hL_U(OM50E41U)
18-inch tires (type A)
18-inch tires (type B)
Tires and wheels
Ti r e s i z e235/50R18 97W
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Driving under normal conditionsFront: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Spare: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law) Add 9 psi (60 kPa, 0.6 kgf/cm
2 or bar) to the front
tires, 10 psi (70 kPa, 0.7 kgf/cm2 or bar) to the rear
tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size18  7 1 /2J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)
Ti r e s i z eP235/50R18 97V
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Driving under normal conditions
Front: 33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Rear: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Spare: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law) Add 6 psi (40 kPa, 0.4 kgf/cm
2 or bar) to the front
tires, 7 psi (50 kPa, 0.5 kgf/cm2 or bar) to the rear
tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size18  7 1 /2J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)

5478-1. Specifications
8
Vehicle specifications
LS600hL_U(OM50E41U)
19-inch tires (type A)
19-inch tires (type B)
Ti r e s i z e245/45R19 98Y
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Driving under normal conditionsFront: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Spare: 36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law) Add 9 psi (60 kPa, 0.6 kgf/cm
2 or bar) to the front
tires, 10 psi (70 kPa, 0.7 kgf/cm2 or bar) to the rear
tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size19  8J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)
Ti r e s i z eP245/45R19 98V
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Driving under normal conditions
Front: 35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Spare: 36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law) Add 6 psi (40 kPa, 0.4 kgf/cm
2 or bar) to the front
tires, 8 psi (50 kPa, 0.5 kgf/cm2) to the rear tires.
Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size19  8J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)

5488-1. Specifications
LS600hL_U(OM50E41U)
19-inch tires (type C)
Ti r e s i z e245/45RF19 98Y
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Driving under normal conditionsFront: 36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law)
Add 9 psi (60 kPa, 0.6 kgf/cm
2 or bar) to the front
tires, 10 psi (70 kPa, 0.7 kgf/cm2 or bar) to the rear
tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size19  8J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)

5538-1. Specifications
8
Vehicle specifications
LS600hL_U(OM50E41U)
Ti r e s i z e ( P. 555)
DOT and Tire Identification Number (TIN) ( P. 5 5 4 )
Location of treadwear indicators ( P. 4 5 4 )
Run-flat tire (RFT) or standard tire ( P. 515)
This vehicle can be equipped with either run-flat tires (RFT) or standard tires. An
“RFT” or “DSST” mark is molded on the sidewall of the run-flat tire.
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 put into 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. 559)
Tire information
Typical tire symbols
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5548-1. Specifications
LS600hL_U(OM50E41U)
Maximum cold tire inflation pressure ( P. 559)
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 tires or all season tires ( P. 4 5 8 )
An all season tire has “M+S” on the side wall. A tire not marked “M+S” is a summer
tire.
DOT symbol*
Tire Identification Number (TIN)
Tire manufacturer’s identification
mark
Ti r e s i z e c o d e
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.
Typical DOT and Tire Iden tification Number (TIN)
9
10
11
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2
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5
6
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5588-1. Specifications
LS600hL_U(OM50E41U)
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing the
tire’s resistance to the generation of heat and its ability to dissipate heat
when tested under controlled conditio ns on a specified indoor labora-
tory test wheel.
Sustained high temperature can cause th e material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of performance which all passenger car tires
must meet under the Federal Motor 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.
Warning: The temperature grades of a tire assume that it is properly inflated
and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.