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Tire Information (U.S.A.)
Glossary of Terms
Tire Placard: A label indicating the OE tire sizes, recommended in À ation pressure, and the
maximum weight the vehicle can carry.
Tire Identi ¿ cation Number (TIN): A number on the sidewall of each tire providing
information about the tire brand and manufacturing plant, tire size, and date of manufacture.
In À ation Pressure: A measure of the amount of air in a tire.
kPa: Kilopascal, the metric unit for air pressure.
psi: Pounds per square inch, the English unit for air pressure.
B-pillar: The structural member at the side of the vehicle behind the front door.
Original Equipment (OE): Describes components originally equipped on the vehicle.
Vehicle Load Limit: The maximum value of the combination weight of occupants and
cargo.
Bead Area of the Tire: Area of the tire next to the rim.
Sidewall Area of the Tire: Area between the bead area and the tread.
Tread Area of the Tire: Area on the perimeter of the tire that contacts the road when it's
mounted on the vehicle.
Seating capacity means the total allowable number of vehicle occupants. Seating capacity
is described on the tire label.
Production options weight is the combination weight of installed regular production
options weighing over 2.3 kilograms in excess of the standard items which they replace,
and not previously considered in the curb weight or accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty battery, and special trim.
Rim is the metal support (wheel) for a tire or a tire and tube assembly upon which the tire
beads are seated.
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Tire Information (U.S.A.)
Vehicle Loading
WARNING
Do not tow a trailer with this vehicle:
Towing a trailer with this vehicle is dangerous because it has not been designed to tow a
trailer and doing so will aff ect the drive system which could result in vehicle damage.
This section will guide you in the proper loading of your vehicle, to keep your loaded
vehicle weight within its design rating capability. Properly loading your vehicle will provide
maximum return of vehicle design performance. Before loading your vehicle, familiarize
yourself with the following terms for determining your vehicle's weight ratings, from the
vehicle's Safety Certi ¿ cation Label and Tire and Load Information Label:
WARNING
Overloaded Vehicle:
Overloading a vehicle is dangerous. The results of overloading can have serious
consequences in terms of passenger safety. Too much weight on a vehicle's suspension
system can cause spring or shock absorber failure, brake failure, handling or steering
problems, irregular tire wear, tire failure or other damage.
Overloading makes a vehicle harder to drive and control. It also increases the distance
required for stopping. In cases of serious overloading, brakes can fail completely,
particularly on steep grades. The load a tire will carry safely is a combination of the size of
the tire, its load range, and corresponding infl ation pressure.
Never overload the vehicle and always observe the vehicle's weight ratings from the
vehicle's Safety Certifi cation and Tire and Load Information labels.
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Tire Information (U.S.A.)
Base Curb Weight is the weight of the vehicle including a full tank of fuel and all
standard equipment. It does not include passengers, cargo, or optional equipment.
Vehicle Curb Weight is the weight of your new vehicle when you picked it up from your
dealer plus any aftermarket equipment.
PAYLOAD
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Tire Information (U.S.A.)
Payload is the combination weight of cargo and passengers that the vehicle is designed
to carry. The maximum payload for your vehicle can be found on the Tire and Load
Information label on the driver's door frame or door pillar. Look for “THE COMBINATION
WEIGHT OF OCCUPANTS AND CARGO SHOULD NEVER EXCEED XXX kg or
XXX lbs” for your maximum payload. The payload listed on the tire label is the maximum
payload for the vehicle as built by the assembly plant. If any aftermarket or dealer installed
equipment has been installed on the vehicle, the weight of the equipment must be subtracted
from the payload listed on the tire label in order to be accurate.
SAMPLE
CARGO
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Tire Information (U.S.A.)
Cargo Weight includes all weight added to the Base Curb Weight, including cargo and
optional equipment.
The cargo weight limit decreases depending on the number of vehicle occupants. The cargo
weight limit can be calculated by subtracting the total weight of the vehicle occupants from
the “combination weight of occupants and cargo should never exceed” value on the tire
label.
Examples: Based on a single occupant weight of 68 kg (150 lbs), and a value of 385 kg (849
lbs) for the “combination weight of occupants and cargo should never exceed”:
The cargo weight limit with one occupant is 385 kg (849 lbs) - 68 kg (150 lbs) = 317 kg
(699 lbs)
The cargo weight limit with two occupants is 385 kg (849 lbs) - (68 × 2) kg ( (150 × 2) lbs)
= 249 kg (549 lbs)
If the weight of the occupant increases, the cargo weight limit decreases by that much.
GAW (Gross Axle Weight) is the total weight placed on each axle (front and rear) -
including vehicle curb weight and all payload.
GAWR (Gross Axle Weight Rating) is the maximum allowable weight that can be carried
by a single axle (front or rear). These numbers are shown on the Safety Compliance
Certi ¿ cation Label located on the driver's door frame or door pillar. The total load on
each axle must never exceed its GAWR.
GVW
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Tire Information (U.S.A.)
GVW (Gross Vehicle Weight) is the Vehicle Curb Weight cargo passengers.
GVWR (Gross Vehicle Weight Rating) is the maximum allowable weight of the fully
loaded vehicle (including all options, equipment, passengers and cargo). The GVWR is
shown on the Safety Compliance Certi ¿ cation Label located on the driver's door frame
or door pillar. The GVW must never exceed the GVWR.
SAMPLE
WARNING
Never Exceed Axle Weight Rating Limits:
Exceeding the Safety Certifi cation Label axle weight rating limits is dangerous and could
result in death or serious injury as a result of substandard vehicle handling, performance,
engine, transmission and/or structural damage, serious damage to the vehicle, or loss of
control.
Always keep the vehicle within the axle weight rating limits.
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Tire Information (U.S.A.)
GCW
GCW (Gross Combination Weight) is the weight of the loaded vehicle (GVW).
GCWR (Gross Combination Weight Rating) is the maximum allowable weight of the
vehicle - including all cargo and passengers - that the vehicle can handle without risking
damage. The GCW must never exceed the GCWR.
WARNING
Never Exceed GVWR or GAWR Specifi cations:
Exceeding the GVWR or the GAWR specifi ed on the certifi cation label is dangerous.
Exceeding any vehicle rating limitation could result in a serious accident, injury, or
damage to the vehicle.
Do not use replacement tires with lower load carrying capacities than the originals
because they may lower the vehicle's GVWR and GAWR limitations. Replacement tires
with a higher limit than the originals do not increase the GVWR and GAWR limitations.
Never exceed the GVWR or the GAWR specifi ed on the certifi cation label.
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Tire Information (U.S.A.)
Steps for Determining the Correct Load Limit
Steps for Determining Correct Load Limit-
(1) Locate the statement “The combined 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 ¿ gure equals the available amount of cargo and luggage load capacity. For
example, if the “XXX” amount equals 1400 lbs. and there will be ¿ ve 150 lb passengers
in your vehicle, the amount of available cargo and luggage load capacity 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 transferred to your
vehicle. Consult this manual to determine how this reduces the available cargo and
luggage load capacity of your vehicle.
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