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208 Wheels and tires
Additionally, the tire pressure table may also
state tire pressures for different load conditions.
These are defined in the tire pressure information
table as different numbers of passengers and
amounts of luggage. The actual number of seats
may differ – for more information, please refer to
the vehicle's registration documents.
The tire pressure values given for partly laden
vehicles are minimum values which offer you
good ride comfort. They are not for trailer opera‐
tion.
You can also use the tire pressure values for a
fully laden vehicle. These are always allowed and
permissible. However, in a partially laden vehicle,
the ride is not as comfortable and fuel consump‐
tion is only minimally reduced. In addition, wear
is greater in the middle of the tire tread.
For trailer operation, the applicable value for the
rear tires is the maximum tire pressure value sta‐
ted in the tire pressure table inside the fuel filler
flap.
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 installed with the electronic tire pres‐
sure monitor, the tire pressure can be checked
using the on-board computer.
Set the correct tire pressure before loading the
vehicle. Once the vehicle is laden, check the tire
pressures and correct them if necessary.
Only correct tire pressure when the tires are
cold. The tires are cold under the following condi‐
tions:
The vehicle has been parked with the tires out
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of direct sunlight for at least three hours.
The vehicle has traveled less than 1 mile
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(1.6 km).
Partially laden vehicle
Tires/disc
Front axle
wheel
225/55 R 17
280 kPa (2.8
XL
bar/41 psi)
A rise in the tire temperature of 18 °F (10 °C)
increases the tire pressure by approx. 10 kPa
(0.1 bar/1.5 psi). Take this into account when
checking the tire pressure of warm tires.
Driving with tire pressure that is too high or too
low can:
shorten the service life of the tires
R
cause increased tire damage
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have a negative effect on handling character‐
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istics and thus driving safety (e.g. due to
hydroplaning)
Vehicles with a gross vehicle weight of
6,614 lbs (3,000 kg)
The following tire pressure values apply to the fol‐
lowing vehicles:
With a gross vehicle weight of 6,614 lbs
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(3,000 kg)
With a gross axle weight rating of 3,307 lbs
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(1,500 kg) on the rear axle
The tires referred to under "Wheel and tire
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combinations" (
The tire pressure for the spare wheel is 350 kPa
(3.5 bar/51 psi).
Fully laden vehicle
Rear axle
Front axle
270 kPa (2.7 bar/39
310 kPa (3.1
psi)
bar/45 psi)
/
page 221)
Rear axle
310 kPa (3.1
bar/45 psi)
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