load capacity Lexus GS350 2014 Do-it-yourself maintenance /

167
GS350_OM_OM30D41U_(U)4-1. Before driving
4
Driving
Cargo and luggage
Cargo capacity depends on the total weight of the occupants.
(Cargo capacity) = (Total load cap acity) — (Total weight of occupants)
Steps for Determining Correct Load Limit —
(1) Locate the statement “The combine d weight of occupants and cargo
should never exceed XXX kg or XXX lbs.” on your vehicle’s placard.
(2) Determine the combined weight of the driver and passengers that will be riding in your vehicle.
(3) Subtract the combined weight of the driver and passengers from XXX kg or XXX lbs.
(4) The resulting figure equals the av ailable amount of cargo and luggage
load capacity.
For example, if the “XXX” amount equals 1400 lbs. and there will be
five 150 lb passengers in your vehi cle, the amount of available cargo
and luggage load capac ity is 650 lbs. (1400  750 (5150) = 650
lbs.)
(5) Determine the combined weight of luggage and cargo being loaded on
the vehicle. That weight may not safely exceed the available cargo and
luggage load capacity calculated in Step 4.
(6) If your vehicle will be towing a trailer, load from your trailer will be trans-
ferred to your vehicle. Consult this manual to determine how this
reduces the available cargo and luggage load capacity of your vehicle.
( P. 170)
Lexus does not recommend towing a trailer with your vehicle. Your vehicle is not
designed for trailer towing.
Take notice of the following information about storage precautions,
cargo capacity and load:
Capacity and distribution

168
GS350_OM_OM30D41U_(U)
4-1. Before driving
Cargo capacity
Total load capacity (vehicle
capacity weight) (P. 76 8 )
When 2 people with the combined weight of A lb. (kg) are riding in your
vehicle, which has a total load capacit y (vehicle capacity weight) of B lb.
(kg), the available amount of cargo and luggage load capacity will be C lb.
(kg) as follows:
B
*2 lb. (kg) — A*1 lb. (kg) = C*3 lb. (kg)
*1: A = Weight of people
*2: B = Total load capacity
*3: C = Available cargo and luggage load
In this condition, if 3 more passengers with the combined weight of D lb. (kg) get
on, the available cargo and luggage load will be reduced E lb. (kg) as follows:
C lb. (kg) - D*4 lb. (kg) = E*5 lb. (kg)
*4: D = Additional weight of people
*5: E = Available cargo and luggage load
As shown in the example above, if the number of occupants increases, the
cargo and luggage load will be redu ced by an amount that equals the
increased weight due to the addition al occupants. In other words, if an
increase in the number of occupants causes an excess of the total load
capacity (combined weight of occu pants plus cargo and luggage load),
you must reduce the cargo and luggage on your vehicle.
Calculation formula for your vehicle
1
2

GS350_OM_OM30D41U_(U)
1694-1. Before driving
4
Driving
CAUTION
■Things that must not be carried in the trunk
The following things may cause a fire if loaded in the trunk:
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions.
Failure to do so may prevent the pedals from being depressed properly, may block
the driver’s vision, or may result in items hitting the driver or passengers, possibly
causing an accident.
●Stow cargo and luggage in the trunk whenever possible.
●Do not place cargo or luggage in or on the following locations.
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the package tray
• On the instrument panel
•On the dashboard
• In front of the Remote Touch screen
●Secure all items in the occupant compartment.
■Capacity and distribution
●Do not exceed the maximum axle weight rating or the total vehicle weight rating.
●Even if the total load of occupant’s weight and the cargo load is less than the total
load capacity, do not apply the load unevenly. Improper loading may cause dete-
rioration of steering or braking control which may cause death or serious injury.

170
GS350_OM_OM30D41U_(U)
4-1. Before driving
Vehicle load limits
◆Total load capacity (vehicle capacity weight): P. 76 8
Total load capacity me ans the combined weight of occupants, cargo
and luggage.
◆Seating capacity: 5 occupants (Front 2, Rear 3)
Seating capacity means the maximum number of occupants whose
estimated average weight is 150 lb. (68 kg) per person.
◆Towing capacity
Lexus does not recommend towing a trailer with your vehicle.
◆Cargo capacity
Cargo capacity may increase or decrease depending on the weight
and the number of occupants.
■Total load capacity and seating capacity
These details are also described on the tire and loading information label. ( P. 6 5 2 )
Vehicle load limits include total load capacity, seating capacity, towing
capacity and cargo capacity.
CAUTION
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tire s, but also degrade steering and braking
ability, resulting in an accident.

276
GS350_OM_OM30D41U_(U)
4-5. Using the driving support systems
CAUTION
■Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
inflation pressure level.
The ABS, TRAC and VSC systems will not function correctly if different tires are
installed on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect the
driving assist systems, and may cause a system to malfunction.

GS350_OM_OM30D41U_(U)
6476-3. Do-it-yourself maintenance
6
Maintenance and care
■Low profile tires (except 225/50R17 tires)
Generally, low profile tires will wear more rapidly and tire grip performance will be
reduced on snowy and/or icy roads when compared to standard tires. Be sure to use
snow tires or tire chains on snowy and/or icy roads and drive carefully at a speed
appropriate for road and weather conditions. ( P. 3 0 6 )
■Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1 /2 of the
Gross Axle Weight Ratings (GAWR) of either the front axle or the rear axle, which-
ever is greater.
■Tire types
●Summer tires
Summer tires are high-speed performance tires best suited to highway driving
under dry conditions. Since summer tires do not have the same traction perfor-
mance as snow tires, summer tires are in adequate for driving on snow-covered or
icy roads. For driving on snow-covered road s or icy roads, the use of snow tires is
recommended. When installing snow tires, be sure to replace all four tires.
●All season tires
All season tires are designed to provide better traction in snow and to be ade-
quate for driving in most winter conditions as well as for use year-round. All season
tires, however, do not have adequate traction performance compared with snow
tires in heavy or loose snow. Also, all seas on tires fall short in acceleration and han-
dling performance compared with summer tires in highway driving.
●Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow tires.
If you need snow tires, select tires of th e same size, construction and load capacity
as the originally installed tires. Since your vehicle has radial tires as original equip-
ment, make sure your snow tires also have radial construction. Do not install stud-
ded tires without first checking local regulations for possible restrictions. Snow
tires should be installed on all wheels. ( P. 3 0 4 )
For the GAWR, see the Certification Label.
For the maximum load of the tire, see the load
limit at maximum cold tire inflation pressure
mentioned on the sidewall of the tire.
(
 P. 7 8 1 )

788
GS350_OM_OM30D41U_(U)
8-1. Specifications
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
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
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
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

GS350_OM_OM30D41U_(U)
7898-1. Specifications
8
Vehicle specifications
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 capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle’s designated seating capacity
Vehicle maximum load on
the tireThe load on an individual tire that is determined by
distributing 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
distributing to each axle its share of curb weight,
accessory weight, and normal occupant weight (dis-
tributed in accordance with Table 1
* below), and
dividing by two
We a t h e r s i d eThe surface area of the rim not covered by the
inflated tire
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
Tire related termMeaning

792
GS350_OM_OM30D41U_(U)
8-1. Specifications
*:Table 1  Occupant loading and distribution for vehicle normal load for various
designated seating capacities
Tr e a dThat portion of a tire that comes into contact with the
road
Tr e a d r i bA tread section running circumferentially around a
tire
Tr e a d s e p a r a t i o nPulling away of the tread from the tire carcass
Treadwear indicators
(TWI)The projections within the principal grooves
designed to give a visual indication of the degrees of
wear of the tread
Wheel-holding fixtureThe fixture used to hold the wheel and tire assembly
securely during testing
Tire related termMeaning
Designated seating
capacity, Number of occupantsVehicle normal load,
Number of occupantsOccupant distribution in a normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
11 through 155
2 in front, 1 in second seat, 1 in third seat, 1 in fourth seat
16 through 207
2 in front, 2 in second seat, 2 in third seat, 1 in fourth seat

841Alphabetical index
GS350_OM_OM30D41U_(U)
Tachometer ........................................ 81, 94
Tail lights.....................................................192Light switch ............................................ 192
Replacing light bulbs ....................... 687
Welcome light illumination control ................................................... 103
Talk switch
*............................................ 340
Telephone switches
*.......................... 496
Theft deterrent system Alarm........................................................... 72
Engine immobilizer system.............. 70
Tire inflation pressure ..........................775 Maintenance data .............................. 775
Tire inflation pressure display function ................................................... 87
Warning light ...................................... 706
Warning message ............................. 727
Tire information .......................................781 Glossary ................................................ 788
Size ............................................................784
Tire identification number..............783
Uniform Tire Quality Grading.............................................. 786
Tire pressure warning system ......... 644 Function ..................................................644
Initializing................................................644
Installing tire pressure warning valves and transmitters ................644
Registering ID codes ...................... 646
Tire pressure warning reset switch................................................... 645
Warning light ...................................... 706
Warning message .................. 727, 727 Tires ............................................................642
Chains .....................................................306
Checking ............................................... 642
If you have a flat tire .......................... 736
Inflation pressure................................ 775
Information..............................................781
Replacing ............................................... 736
Rotating tires ........................................ 643
Size ........................................................... 775
Snow tires ............................................. 308
Spare tire................................................ 736
Tire inflation pressure display function................................................... 87
Tire pressure warning system ..... 644
Warning light ....................................... 706
Warning message..............................727
Tools ........................................................... 737
Top tether strap ........................................66
Total load capacity................................. 170
Towing Dinghy towing ....................................... 172
Emergency towing ........................... 694
Towing eyelet ......................................695
Trailer towing........................................... 171
TRAC (Traction Control)..................269
Transmission ........................................... 180 Automatic transmission ................... 180
Driving mode select switch .......... 264
If the shift lever cannot be shifted from P ..................................... 751
M mode ................................................... 183
Paddle shift switches..........................182
Trip information ....................................... 85
Trip meters................................................... 81
T
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.