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

Page 269

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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 permitted gross

weight of the fully loaded vehicle (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 total load limit and the

weight of the optional equipment installed at

the factory.
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa is the

equivalent of 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 load rating in kilograms or

pounds is the maximum weight 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.
Aspect ratio
Relationship between tire height and tire

width in percent.
tire pressure
This is pressure inside the tire applying an

outward force to each square inch of the tire's

surface. The tire pressure is specified in

pounds per square inch (psi), in kilopascal

(kPa) or in bar. The tire pressure should only

be corrected when the tires are cold. For this,

the vehicle must have been stationary for at

least three hours or not have traveled more

than 1.6 km (1 mile) in this time.
Tire pressure of cold tires
The tires are cold:

R

if the vehicle has been parked without

direct sunlight on the tires for at least three

hours and

R

if the vehicle has not been driven more than

1 mile (1.6 km)

All about wheels and tires

267

Wheels

and

tires

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