Mercedes-benz S-Class 2011 User Manual download pdf (Page 502)

Term definition for tires and loading

Tire ply composition and material

used

Describes the number of layers or the number

of rubber-coated belts in the tire tread and

the tire wall. These are made of steel, nylon,

polyester and other materials.

Bar

Metric unit for tire pressure. 14.5038 pounds

per square inch (psi) and 100 kilopascals

(kPa) are the equivalent of 1 bar.

DOT (Department of Transportation)

DOT marked tires fulfill the requirements of

the United States Department of

Transportation.

Average weight of the vehicle

occupants

The number of occupants for which the

vehicle is designed multiplied by 68 kilograms

(150 lb).

Uniform Tire Quality Grading

Standards

This is a uniform standard to grade the quality

of tires with regards to tread quality, tire

traction and temperature characteristics. The

quality grading assessment is made by the

manufacturer following specifications from

the U.S. government. The quality grade of a

tire is imprinted on the sidewall of the tire.

Recommended tire pressure

This is the recommended tire pressure for

your vehicle under normal driving conditions.

You will find the recommendation on the Tire

and Loading Information placard on the

B-pillar on the driver's side of your vehicle.

The recommended tire pressure provides the

best balance between handling

characteristics, ride comfort and wear.

Additional information on particular driving

conditions is located on the tire pressure

table on the inside of the fuel filler flap.

Increased vehicle weight due to

optional equipment

This is the combined weight of all standard

and optional equipment available for the

vehicle, regardless of whether it is actually

installed on the vehicle or not.

Wheel rim

This is the part of the wheel on which the tire

is mounted.

GAWR (Gross Axle Weight Rating)

The GAWR is the maximum gross axle weight

rating. The actual load on an axle must never

exceed the gross axle weight rating. The

gross axle weight rating can be found on the

vehicle identification plate on the B-pillar on

the driver's side.

Speed index

The speed index is part of the tire

identification. It specifies the speed range for

which the tire is approved. Specifies the

speed range for which the tire is approved.

GVW (Gross Vehicle Weight)

The gross vehicle weight includes the weight

of the vehicle including fuel, tools, the spare

wheel, accessories installed, occupants,

luggage and the drawbar noseweight if

applicable. The gross vehicle weight must not

exceed the gross vehicle weight rating GVWR

500

Term definition for tires and loading

Tires and wheels

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