Wheels and tires, All about wheels and tires – Mercedes-Benz SL-Class 2014 Owners Manual User Manual

Page 597

various operating conditions, i.e. differing

load and speed conditions.
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.
Rim
This is the part of the wheel on which the tire

is mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum permissible axle

weight. 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 rating
The speed rating is part of the tire

identification. It 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

as specified on the vehicle identification plate

on the B pillar on the driver's side.
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross

weight of a fully loaded vehicle (the weight of

the vehicle including all accessories,

occupants, fuel, luggage and the drawbar

noseweight, if applicable). The gross vehicle

weight rating is specified on the vehicle

identification plate on the B-pillar on the

driver's side.

Maximum loaded vehicle weight
The maximum weight is the sum of:

the curb weight of the vehicle

the weight of the accessories

the load limit

the weight of the factory installed optional

equipment

Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa

corresponds to 1 psi. Another unit for tire

pressure is bar. There are 100 kilopascals

(kPa) to 1 bar.
Load index
In addition to the load-bearing index, the load

index may also be imprinted on the sidewall

of the tire. This specifies the load-bearing

capacity more precisely.
Curb weight
The weight of a vehicle with standard

equipment including the maximum capacity

of fuel, oil and coolant. It also includes the air-

conditioning system and optional equipment

if these are installed in the vehicle, but does

not include passengers or luggage.
Maximum load rating
The maximum tire load is the maximum

permissible weight in kilograms or lbs for

which a tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one

tire.
Maximum load on one tire
Maximum load on one tire. This is calculated

by dividing the maximum axle load of one axle

by two.
PSI (pounds per square inch)
A standard unit of measure for tire pressure.

All about wheels and tires

595

Wheels

and

tires