fuel, tools, the spare wheel, accessories installed,
occupants, luggage and the trailer drawbar nose-
weight if applicable. The Gross Vehicle Weight
must never exceed the Gross Vehicle Weight Rat-
ing (GVWR) speci ed on the B-pillar on the driver's
side.
GGVWR (Gr
VWR (Gross V
oss Vehicle W
ehicle Weight R
eight Rating):
ating): the GVWR is
the maximum permitted gross weight of the fully
laden vehicle (weight of the vehicle including all
accessories, occupants, fuel, luggage and the
trailer drawbar noseweight if applicable). The
Gross Vehicle Weight Rating is speci ed on the
vehicle identi cation plate on the B-pillar on the
driver's side.
Maximum w
Maximum weight of t
eight of the laden v
he laden vehicle:
ehicle: the maxi-
mum weight is the sum of the vehicle's curb
weight, weight of the accessories, maximum load
and the weight of the factory installed optional
equipment.
Kilopascal (kP
Kilopascal (kPa):
a): metric unit for tire pressure.
6.9 kPa are the equivalent of 1 psi. Another unit
for tire pressure is bar. 100 kilopascals (kPa) are
the equivalent of 1 bar.
Curb w
Curb weight:
eight: 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 instal-
led on the vehicle, but does not include passen-
gers or luggage.
Maximum tir
Maximum tire load:
e load: the maximum tire load is the
maximum permissible weight in kilograms or lbs
for which a tire is approved.
Maximum per
Maximum permissible tir
missible tire pr
e pressur
essure:
e: maximum per-
missible tire pressure for one tire.
Maximum load on one tir
Maximum load on one tire:
e: maximum load on one
tire. This is calculated by dividing the maximum
axle load for one axle by two.
PSI (pounds per sq
PSI (pounds per squar
uare inc
e inch):
h): standard unit of
measurement for tire pressure.
Aspect r
Aspect ratio:
atio: relationship between tire height and
tire width in percent.
TTirire pr
e pressur
essure:
e: pressure inside the tire applying an
outward force to every square inch of the tire's
surface. The tire pressure is speci ed in pounds
per square inch (psi), in kilopascal (kPa) or in bar.
The tire pressure should only be corrected when
the tires are cold.
TTirire pr
e pressur
essure on cold tir
e on cold tires:
es: the tires are cold when
the vehicle has been parked with the tires out of
direct sunlight for at least three hours and the
vehicle has been driven less than 1 mile (1.6 km).
TTirire cont
e contact surf
act surface:
ace: the part of the tire that
comes into contact with the road.
TTirire bead:
e bead: the purpose of the tire bead is to ensure
that the tire sits securely on the wheel rim. There
are several wire cores in the tire bead to prevent
the tire from changing length on the wheel rim.
Side w
Side wall:
all: the part of the tire between the tread
and the tire bead.
Special eq
Special equipment w
uipment weight:
eight: the combined weight of
those optional extras that weigh more than the
replaced standard parts and more than 5 lbs
(2.3 kg). Special equipment, such as high-perform-
ance brakes, level control system, a roof luggage
rack or a high-performance battery, are not inclu-
ded in the curb weight and the weight of the
accessories.
TIN (T
TIN (Tiriree Identi cation
Identi cation Number):
Number): a unique identi -
cation number which can be used by a tire manu-
facturer to identify tires, for example for a product
recall, and thus identify the purchasers. The TIN is
made up of the manufacturer identi cation code,
tire size, tire type code and the manufacturing
date.
Load-bear
Load-bearing inde
ing index:
x: the load-bearing index (also
load index) is a code that contains the maximum
load-bearing capacity of a tire.
Tr
Traction:
action: traction is the result of friction between
the tires and the road surface.
W
Wear indicat
ear indicator:
or: narrow bars (tread wear bars) that
are distributed over the tire tread. If the tire tread
is level with the bars, the wear limit of 1/16 in
(1.6 mm) has been reached.
Dis
Distrtribution of v
ibution of vehicle occupants:
ehicle occupants: distribution of
vehicle occupants over designated seat positions
in a vehicle.
Maximum per
Maximum permissible pay
missible payload w
load weight:
eight: nominal
load and luggage load plus 150 lbs (68 kg) multi-
plied by the number of seats in the vehicle.
Changing a wheel
Changing a wheel
NNoottes on selecting, inst
es on selecting, installing and r
alling and replacing tir
eplacing tires
es
You can ask for information regarding permitted
wheel/tire combinations at a quali ed specialist
workshop.
&
W
WARNING
ARNING Risk of accident due to incor-
rect wheel and tire dimensions
If wheels and tires of the wrong size are used,
the service brakes or wheel suspension com-
ponents may be damaged.
252
252 Wheels and tires
