Tire pressure plate
Tire pressure plate
The tire pressure table is located on the
B-pillar on the driver's side of the vehicle
(Y page 298).
The tire pressure table contains recom-
mended tire pressures 0043for cold tires. Rec-
ommended tire pressures 0043apply to the
maximum permissible load and up to the max-
imum permissible speed of the vehicle. Important notes on tire pressure
G
WARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident.
R Check the tire for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop.
Use a suitable pressure gauge to check the
tire pressure. The outer appearance of a tire
does not permit any reliable conclusion about
the tire pressure. On vehicles equipped with
the electronic tire pressure monitor, the tire
pressure can be checked using the on-board
computer. The tire temperature and pressure increase
when the vehicle is in motion. This is depend-
ent on the driving speed and the load.
Therefore, you should only correct tire pres-
sure when the tires are cold.
The tires are cold:
R
if the vehicle has been parked for at least
three hours without direct sunlight on the
tires, and
R if the vehicle has not been driven further
than 1 mile (1.6 km)
Tire temperature changes depending on the
ambient temperature, driving speed and tire
load. If the tire temperature changes by
18 ‡ (10 †),the tire pressure changes by
approximately 10 kPa (0.1 ba r/1.5 psi). Take
this into account when checking the pressure
of warm tires. Only correct the tire pressure
if it is too low for the current operating con-
ditions. If you check the tire pressure when
the tires are warm, it results in a higher value
than when the tires are cold. This is normal.
Do not under any circumstances release the
air in order to adjust the pressure to the pre-
scribed value for cold tires. The tire pressure
would otherwise be too low.
Observe the recommended tire pressures for
cold tires:
R on the Tire and Loading Information plac-
ard 6
on the B-pillar on the driver's side or
R on the tire pressure table on the B-pillaron
the driver's side of the vehicle Underinflated or overinflated tires
Underinflated tires: G
WARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addition,
they also suffer from excessive and/or irreg-
ular wear, which can severely impair the brak-
6 Only for vehicles with a gross weight of less than 10,000 lbs (4,536 kg). Tire pressure
291Wheels and tires
Z
ing properties and the driving characteristics.
There is a risk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel.
Underinflated tires can:
R fail from being overheated
R adversely affect handling
R wear excessively and/or unevenly
R have an adverse effect on fuel consumption
Overinflated tires G
WARNING
Tires with excessively high pressure can burst
because they are damaged more easily by
road debris, potholes etc. In addition, they
also suffer from irregular wear, which can
severely impair the braking properties and the
driving characteristics. There is a risk of an
accident.
Avoid tire pressures that are too high in all the
tires, including the spare wheel.
Overinflated tires can:
R increase the braking distance
R adversely affect handling
R wear excessively and/or unevenly
R adversely affect ride comfort
R be more susceptible to damage
Maximum tire pressures 0043
Maximum permitted tire pressure (exam-
ple) Never exceed the maximum permissible tire
inflation pressure. When adjusting the tire
pressures always observe the recommended
tire pressure for your vehicle (Y
page 290).
i The actual values for tires are specific to
each vehicle and may deviate from the val-
ues in the illustration. Tire valve (snap-in valve)
G
WARNING
Tire valve that are not approved for your vehi-
cle by the distributor named on the inside
cover page may result in a loss of tire pres-
sure. This may affect road safety. There is a
risk of an accident.
Only use tire valve that are approved for your
vehicle by the distributor named on the inside
cover page. Always make sure you have the
correct tire valve type for the tires on your
vehicle.
! Do not screw additional weights (check
valves, etc.) onto the tire valves. The elec-
tronic components could thus be damaged.
Only for vehicles without a tire pressure mon-
itor:
For safety reasons, we recommend that you
only use tire valves that have been tested for
use on your vehicle, e.g. those manufactured
by Wonder:
R type TR 600 for the vehicle types 2500
R type TR 418 for the vehicle types 3500 Checking the tire pressure manually
In order to determine and adjust the tire pres-
sures, proceed as follows:
X Remove the valve cap of the tire you wish
to check.
X Press the tire pressure gauge securely onto
the valve.
X Read the tire pressure and compare it with
the recommended value on the loading 292
Tire pressureWheels and tires
Loading the vehicle
Instruction labels for tires and loads
G
WARNING
Overloaded tires can overheat, causing a
blowout. Overloaded tires can also impair the
steering and driving characteristics and lead
to brake failure. There is a risk of accident.
Observe the load rating of the tires. The load
rating must be at least half of the GAWR of
your vehicle. Never overload the tires by
exceeding the maximum load. The Tire and Loading Information placard on the
driver’s door B-pillar
Two instruction labels on your vehicle show
the maximum possible load.
(1) Only for vehicles with a gross weight of
less than 10,000 lbs (4,536 kg):
Tire and Loading Information placard 0043
is on the B-pillar on the driver's side. Tire
and Loading Information placard 0043
shows the permissible number of occu-
pants and the maximum permissible load
of the vehicle. It also contains details of
the tire sizes and corresponding pres-
sures for tires mounted at the factory.
(2) The vehicle identification plate is located on the base of the driver's seat. The vehi-
cle identification plate informs you of the
gross vehicle weight rating. It is made up
of the vehicle weight, all vehicle occu-
pants, the fuel and the cargo. You can
also find information about the maximum Gross Axle Weight Rating on the front and
rear axle.
The maximum gross axle weight rating is
the maximum weight that can be carried
by one axle (front or rear axle). Do not
exceed the maximum gross vehicle
weight or the maximum gross axle weight
rating for the front or rear axle.
Tire and Loading Information placard
General notes Only vehicles with a gross weight of less than
10,000 lbs (4,536 kg) have a Tire and Loading
Information placard on the B-pillar on the
driver's side.
Maximum permissible gross vehicle
weight rating
0043
Maximum number of seats
0044 Maximum permissible gross vehicle
weight rating
X Specification for maximum gross vehicle
weight 0044is listed in the Tire and Loading
Information placard: "The gross weight of
occupants and luggage must not exceed
XXX kilograms or XXX lbs."
The gross weight of all vehicle occupants,
cargo, luggage and trailer load/noseweight (if
applicable) must not exceed the specified
value.
i The details on the Tire and Loading Infor-
mation placard illustration are only an 298
Loading the vehicleWheels and tires
example. The maximum permissible gross
vehicle weight rating is vehicle-specific and
may differ from that which is illustrated.
You can find the valid maximum permissi-
ble gross vehicle weight rating for your
vehicle on the Tire and Loading Information
placard.
Number of seats 0043
Maximum number of seats
0044 Maximum permissible gross vehicle
weight rating
Maximum number of seats 0043determines the
maximum number of occupants allowed to
travel in the vehicle. This information can be
found on the Tire and Loading Information
placard.
i The details on the Tire and Loading Infor-
mation placard illustration are only an
example. The number of seats is vehicle-
specific and can differ from the details
shown. The number of seats in your vehicle
can be found on the Tire and Loading Infor-
mation placard.
Determining the maximum load Individual steps
The following steps have been developed as
required of all manufacturers under Title 49,
Code of U.S. Federal Regulations, Part 575 in
accordance with the "National Traffic and
Motor Vehicle Safety Act of 1966".
X Step 1: Locate the statement "The com-
bined weight of occupants and cargo should never exceed XXX kg or XXX lbs." on
your vehicle's Tire and Loading Information
placard.
X Step 2: Determine the combined weight of
the driver and passengers that will be trav-
eling in your vehicle.
X Step 3: Subtract the combined weight of
the driver and passengers from XXX kilo-
grams or XXX lbs.
X Step 4: The resulting figure equals the
available amount of cargo and luggage load
capacity. For example, if the "XXX" amount
equals 1400 lbs and there will be five
150 pound passengers in your vehicle, the
amount of available cargo and luggage load
capacity is 650 lbs (1400 00F8750 (5 x 150) =
650 lbs).
X Step 5: Determine the combined weight of
luggage and cargo being loaded on the
vehicle. For reasons of safety, that weight
must not exceed the available cargo and
luggage cargo capacity calculated in step
4.
X Step 6 (if applicable): If you intend to tow
a trailer behind your vehicle, the load on the
trailer is transferred to your vehicle. Please
consult the Tire and Loading Information
placard, to determine how this reduces the
available cargo and luggage load capacity
of your vehicle. Loading the vehicle
299Wheels and tires Z
Example: Steps 1 to 3
The following table shows examples of how to calculate total load and cargo capacities with
varying seating configurations and number and size of occupants. The following examples use
a maximum load of 1500 lbs (680 kg). This is for illustration purposes only. Make sure you
are using the actual load limit for your vehicle stated on your vehicle's Tire and Loading Infor-
mation placard . Example 1 Example 2 Example 3
Step 1 Combined maximum
weight of occupants
and cargo (data from
the Tire and Loading
Information placard)
1500 lbs
(680 kg) 1500 lbs
(680 kg) 1500 lbs
(680 kg)
Example 1 Example 2 Example 3
Step 2 Number of people in
the vehicle (driver
and occupants)
5 3 1
Distribution of the
occupants
Front: 2
Rear: 3 Front: 1
Rear: 2 Front: 1
Weight of the occu-
pants
Occupant 1:
150 lbs (68 kg)
Occupant 2:
180 lbs (82 kg)
Occupant 3:
160 lbs (73 kg)
Occupant 4:
140 lbs (63 kg)
Occupant 5:
120 lbs (54 kg) Occupant 1:
200 lbs (91 kg)
Occupant 2:
190 lbs (86 kg)
Occupant 3:
150 lbs (68 kg) Occupant 1:
150 lbs (68 kg)
Gross weight of all
occupants
750 lbs (340 kg) 540 lbs (245 kg) 150 lbs (68 kg)300
Loading the vehicleWheels and tires
Example 1 Example 2 Example 3
Step 3 Permissible cargo
and trailer load/
noseweight (maxi-
mum gross vehicle
weight rating from
the Tire and Loading
Information placard
minus the gross
weight of all occu-
pants)
1500 lbs
(680 kg)
00F8750 lbs
(340 kg) =
750 lbs (340 kg) 1500 lbs
(680 kg)
00F8540 lbs
(245 kg) =
960 lbs (435 kg) 1500 lbs
(680 kg)
00F8150 lbs (68 kg)
= 1350 lbs
(612 kg) The greater the combined weight of the occupants, the lower the maximum luggage load.
Further information can be found under "Towing a trailer" (Y
page 178).Vehicle identification plate
Even if you have calculated the total cargo
carefully, you should still make sure that the
gross vehicle weight rating and the gross axle
weight rating are not exceeded. Details about
this can be found on the vehicle identification
plate on the driver seat frame of your vehicle
(Y page 319).
Gross vehicle weight: the gross weight of
the vehicle, all passengers, cargo and trailer
load/noseweight (if applicable) must not
exceed the permissible gross vehicle weight.
Gross axle weight rating: the maximum per-
missible load that can be carried by one axle
(front or rear axle).
To ensure that your vehicle does not exceed
the maximum permissible values (gross vehi-
cle weight and maximum gross axle weight
rating), have your loaded vehicle (including
driver, occupants, cargo, and full trailer load
if applicable) weighed on a suitable vehicle
weighbridge. Trailer load/noseweight
The trailer load/noseweight affects the gross
weight of the vehicle. If a trailer is attached,
the trailer load/noseweight is included in the
load along with occupants and luggage. The trailer load/noseweight is usually approx-
imately 10
%of the gross weight of the trailer
and its load. What you should know about wheels
and tires
Tire labeling
Overview 0043
DOT, Tire Identification Number
(Ypage 304)
0044 Maximum tire load (Y page 303) What you should know about wheels and tires
301Wheels and tires Z
For further information on the load-bearing
index, see "Load index" (Y page 303).
Speed rating: speed rating006Bspecifies the
approved maximum speed of the tire.
Regardless of the speed index always observe
the speed limits. Drive carefully and adapt
your driving style to the traffic conditions.
i Tire data is vehicle-specific and may devi-
ate from the data in the example. Index Speed rating
F up to 50 mph (80 km/h)
G up to 56 mph (90 km/h)
J up to 62 mph (100 km/h)
K up to 68 mph (110 km/h)
L up to 74 mph (120 km/h)
M up to 80 mph (130 km/h)
N up to 87 mph (140 km/h)
P up to 93 mph (150 km/h)
Q up to 100 mph (160 km/h)
R over 106 mph (170 km/h)
i
Not all tires that have the M+S identifica-
tion offer the driving characteristics of win-
ter tires. In addition to the M+S marking,
winter tires also have the 004Dsnowflake
symbol on the tire wall. Tires with this mark-
ing fulfill the requirements of the Rubber
Manufacturers Association (RMA) and the
Rubber Association of Canada (RAC)
regarding the tire traction on snow. They
have been especially developed for driving
on snow.
Further information on the reading of tire
information can be obtained at any qualified
specialist workshop. Load index
In addition to the load-bearing index, load rat-
ing
0043may be imprinted after the letters that
identify speed rating on the sidewall of the tire
(Y page 302).
R If no specification is given: no text (as in the
example above), represents a standard
load (SL) tire
R XL or Extra Load: represents a reinforced
tire
R Light Load: represents a light load tire
R C, D, E: represents a load range that
depends on the maximum load that the tire
can carry at a certain pressure
i Tire data is vehicle-specific and may devi-
ate from the data in the example.
Maximum tire load Maximum tire load
0043is the maximum per-
missible weight for which the tire is approved.
Do not overload the tires by exceeding the
specified load limit. The maximum permissi-
ble load can be found on the vehicle's Tire and What you should know about wheels and tires
303Wheels and tires Z
DOT (Department of Transportation)
DOT marked tires fulfill the requirements of
the United States Department of Transporta-
tion.
Average weight of vehicle occupants
The number of occupants for which the vehi-
cle is designed multiplied by 68 kilograms
(150 lbs).
Uniform Tire Quality Grading Standards
A uniform standard to grade the quality of
tires with regard to tread quality, traction and
temperature characteristics. The quality
grading assessment is made by the manufac-
turer following specifications from the U.S
government. The quality grade of a tire is
imprinted on the sidewall of the tire.
Recommended tire pressure
The recommended tire pressure are the pres-
sures specified for the tires mounted on the
vehicle at the factory.
The Tire and Loading Information placard 7
contains the recommended tire pressure for
cold tires, the maximum permissible load and
the maximum permissible vehicle speed.
The tire pressure table contains the recom-
mended tire pressure for cold tires under var-
ious operating conditions, i.e. loading and/or
speed of the vehicle.
Increased vehicle weight due to optional
equipment
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
The part of the wheel on which the tire is
mounted.
GAWR (Gross Axle Weight Rating)
GAWR is the maximum gross axle weight rat-
ing. 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 driver seat
frame (Y
page 319).
Speed index
The speed index is part of the tire identifica-
tion. It specifies the speed range for which the
tire is approved.
GTW (Gross Trailer Weight)
GTW is the total of weight of a trailer and the
weight of the load, accessories etc. on the
trailer.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight
of the vehicle including fuel, tools, spare
wheel, accessories installed, occupants, lug-
gage and the drawbar noseweight if applica-
ble. The gross vehicle weight may never
exceed the gross vehicle weight rating
(GVWR) specified on the vehicle identification
plate at the base of the driver's seat
(Y page 319).
GVWR (Gross Vehicle Weight Rating)
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 drawbar noseweight if
applicable). The Gross Vehicle Weight Rating
is specified on the vehicle identification plate
on the driver seat frame (Y page 319).
Maximum weight of the laden vehicle
The maximum weight is the sum of:
R the curb weight of the vehicle
R the weight of the accessories
R the load limit
R the weight of the factory installed optional
equipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa are the
equivalent of 1 psi. Another tire pressure unit
7 Only for vehicles with a gross weight of less than 10,000 lbs (4,536 kg). What you should know about wheels and ti
res
305Wheels and tires Z