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involves switching the front and rear
tires on the right-hand side of the ve-
hicle and similarly switching the front
and rear tires on the left-hand side of
the vehicle. (Each tire must be kept on
its original side of the vehicle.) Re-
place any damaged or unevenly worn
tire at the time of rotation. After tire ro-
tation, adjust the tire pressures and
make sure the wheel nuts are correct-
ly tightened. A tightening torque spec-
ification and a tightening sequence
specification for the wheel nuts can be
found “Flat tires” section in chapter
9.
Vehicle load limit – how to de-
termineThe load capacity of your vehicle is
determined by weight, not by avail-
able cargo space. The load limit of
your vehicle is shown on the vehicle
label attached to the driver’s side B-
pillar. Locate the statement “The com-
bined weight of occupants and cargo
should never exceed XXX kg or XXX
lbs” on your vehicle’s label.
The vehicle label also shows seating
capacity of your vehicle.
The total load capacity includes thetotal weight of driver and all passen-
gers and their belongings, any cargo,
any optional equipment such as a
trailer hitch, roof rack or bike carrier,
etc., and the tongue load of a trailer.
Therefore cargo capacity can be cal-
culated by the following method.
Cargo capacity = Load limit – (total
weight of occupants + total weight of
optional equipment + tongue load of a
trailer (if applicable))
For towing capacity information and
weight limits, refer to “Trailer towing”
section in chapter 8.
Calculating total and load capac-
ities varying seating configura-
tions
Calculate the available load capacity
as shown in the following examples:Example 1A
Vehicle capacity weight of the vehicle
is 900 lbs (408 kg), which is indicated
on the vehicle label with the statement
“The combined weight of occupants
and cargo should never exceed 900
lbs or 408 kg”.
For example, if the vehicle has one
occupant weighing 154 lbs (70 kg)
plus cargo weighing 662 lbs (300 kg).
1. Calculate the total weight.
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2. Calculate the available load capac-
ity by subtracting the total weight from
the vehicle capacity weight of 900 lbs
(408 kg).
3. The result of step 2 shows that a
further 84 lbs (38 kg) of cargo can be
carried.Example 1B
For example, if a person weighing 176
lbs (80 kg) now enters the same vehi-
cle (bringing the number of occupants
to two), the calculations are as fol-
lows:
1. Calculate the total weight.2. Calculate the available load capac-
ity.
3. The total weight now exceeds the
capacity weight by 92 lbs (42 kg), so
the cargo weight must be reduced by
92 lbs (42 kg) or more.
Example 2A
Vehicle capacity weight of the vehicle
is 900 lbs (408 kg), which is indicatedTotal weight
= 154 lbs (70 kg) + 662 lbs (300 kg)
= 816 lbs (370 kg)(Occupant) (Cargo)
800272
Total weight
= 154 lbs (70 kg) + 176 lbs (80 kg)
+ 662 lbs (300 kg)
= 992 lbs (450 kg)(Occupant)
(Cargo)
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capacity weight by 32 lbs (15 kg), so
the cargo weight must be reduced by
32 lbs (15 kg) or more.Determining compatibility of
tire and vehicle load capaci-
tiesThe sum of four tires’ maximum load
ratings must exceed the maximum
loaded vehicle weight (“GVWR”). In
addition, sum of the maximum load
ratings of two front tires and of two
rear tires must exceed each axle’s
maximum loaded capacity (“GAWR”).
Original equipment tires are designed
to fulfill those conditions.
The maximum loaded vehicle weight
is referred to Gross Vehicle Weight
Rating (GVWR). And each axle’s
maximum loaded capacity is referred
to Gross Axle Weight Rating
(GAWR). The GVWR and each axle’s
GAWR are shown on the vehicle cer-
tification label affixed to the driver’s
door.
The GVWR and front and rear
GAWRs are determined by not only
the maximum load rating of tires but
also loaded capacities of the vehicle’ssuspension, axles and other parts of
the body.
Therefore, this means that the vehicle
cannot necessarily be loaded up to
the tire’s maximum load rating on the
tire sidewall.
Adverse safety consequenc-
es of overloading on handling
and stopping and on tiresOverloading could affect vehicle han-
dling, stopping distance, vehicle and
tire as shown in the following. This
could lead to an accident and possibly
result in severe personal injury.Vehicle stability will deteriorate.Heavy and/or high-mounted loads
could increase the risk of rollover.Stopping distance will increase.Brakes could overheat and fail.Suspension, bearings, axles and
other parts of the body could break or
experience accelerated wear that will
shorten vehicle life.Tires could fail.Tread separation could occur.Tire could separate from its rim.
Steps for Determining Cor-
rect Load Limit1. Locate the statement “The com-
bined weight of occupants and cargo
should never exceed XXX pounds” on
your vehicle’s label.
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
kilograms or XXX pounds.
4. The resulting figure equals the
available amount of cargo and lug-
gage load capacity. For example, if
the “XXX” amount equals 1,400 lbs
(635 kg) and there will be five- 150 lbs
(68 kg) passengers in your vehicle,
the amount of available cargo and
luggage load capacity is 650 lbs.
(1,400 – 750 (5 150) = 650 lbs.)
5. Determine the combined weight of
luggage and cargo being loaded on
the vehicle. That weight may not safe-
ly exceed the available cargo and lug-
gage load capacity calculated in Step
4.
6. If your vehicle will be towing a trail-
er, load from your trailer will be trans-
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ferred to your vehicle. Consult this
manual to determine how this reduc-
es the available cargo and luggage
load capacity of your vehicle.
Uniform tire quality grading standardsThis information indicates the relative
performance of passenger car tires in
the area of treadwear, traction, and
temperature resistance. This is to aid
the consumer in making an informed
choice in the purchase of tires.
Quality grades can be found where
applicable on the tire sidewall be-
tween tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Tem-
perature A
The quality grades apply to new pneu-
matic tires for use on passenger cars.
However, they do not apply to deep
tread, winter type snow tires, space-
saver or temporary use spare tires,
tires with nominal rim diameters of 12
inches or less, or to some limited pro-
duction tires.
All passenger car tires must confirm
to Federal Safety Requirements in
addition to these grades.
TreadwearThe treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlled con-
ditions on a specified government test
course.
For example, a tire graded 150 would
wear one and one-half (1-1/2) times
as well on the government course as
a tire graded 100. The relative perfor-
mance of tires depends upon the ac-
tual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving hab-
its, service practices and differences
in road characteristics and climate.Traction AA, A, B, CThe traction grades, from highest to
lowest, are AA, A, B and C. Those
grades represent the tire’s ability to
stop on wet pavement as measured
under controlled conditions on speci-
fied government test surfaces of as-
phalt and concrete. A tire marked C
may have poor traction performance.
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