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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)
Standard unit of measurement for tire
pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tire pressure
Pressure inside the tire applying an outward
force to every 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 tread
The part of the tire that comes into contact
with the road.
Tire bead
The tire bead contains steel wire which is
bound by steel cords that hold the tire on the
wheel rim.
Sidewall
The part of the tire between the tread and the
tire bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
part and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control, a roof rack
or a high-performance battery, are not
included in the unladen weight and the weight
of the accessories.
TIN (Tire Identification Number)
A unique identification number which can be
used by a tire manufacturer to identify tires,
for example for a product recall, and thus
identify the purchasers. The TIN is made up
of the manufacturer's identity code, tire size,
tire type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire.
Traction
Traction is the result of friction between the
tires and the road surface.
TWR (permissible trailer drawbar
noseweight)
The TWR is the maximum permissible weight
that the ball coupling of the trailer tow hitch
can support.
Wear indicator
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.
356Definitions for tires and loadingTires and wheels
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Page 373 of 376

Vehicle dimensions, GL 350 BlueTECVehicle length201.1 in (5108 mm)Vehicle width
including exterior
mirrors85.5 in (2170 mm)Vehicle height72.4 - 75.6 in (1840 -
1920 mm) 5472.4 - 76.8 in (1840 -
1950 mm) 55Wheelbase121.1 in (3075 mm)Front track64.8 in (1645 mm)Rear track64.9 in (1648 mm)Ground clearance8.0 - 10.9 in (202 -
277 mm) 548.0 - 12.1 in (202 -
307 mm) 55Turning circle39.7 ft (12.1 m)Vehicle weight, GL 350 BlueTECMaximum roof
loadMaximum 198 lb
(90 kg)
Vehicle data, GL 450 (164.871)
The data quoted here refers specifically to a
vehicle with standard equipment. Contact an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
Vehicle dimensions, GL 450Vehicle length201.1 in (5108 mm)Vehicle width
including exterior
mirrors85.5 in (2170 mm)Vehicle height72.4 - 75.6 in (1840 -
1920 mm) 5672.4 - 76.8 in (1840 -
1950 mm) 57Wheelbase121.1 in (3075 mm)Front track64.8 in (1645 mm)Rear track64.9 in (1648 mm)Ground clearance8.0 - 10.9 in (202 -
277 mm) 568.0 - 12.1 in (202 -
307 mm) 57Turning circle39.7 ft (12.1 m)Vehicle weight, GL 450Maximum roof
loadMaximum 198 lb
(90 kg)
Vehicle data, GL 550 (164.886)
The data quoted here refers specifically to a
vehicle with standard equipment. Contact an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
54 Vehicles without Off-road Pro engineering package: the values vary depending on the level set for the vehicle
suspension.
55 Vehicles with Off-road Pro engineering package: the values vary depending on the level set for the vehicle
suspension.
56 Vehicles without Off-road Pro engineering package: the values vary depending on the level set for the vehicle
suspension.
57 Vehicles with Off-road Pro engineering package: the values vary depending on the level set for the vehicle
suspension.Vehicle data371Technical dataBA 164.8 USA, CA Edition B 2011; 1; 2, en-USd2sboikeVersion: 3.0.3.52010-04-21T15:08:44+02:00 - Seite 371Z
Page 374 of 376
Vehicle dimensions, GL 550Vehicle length201.1 in (5108 mm)Vehicle width
including exterior
mirrors85.5 in (2170 mm)Vehicle height72.4 - 75.6 in (1840 -
1920 mm) 5872.4 - 76.8 in (1840 -
1950 mm) 59Wheel base121.1 in (3075 mm)Front track64.8 in (1645 mm)Rear track64.9 in (1648 mm)Ground clearance8.0 - 10.9 in (202 -
277 mm) 588.0 - 12.1 in (202 -
307 mm) 59Turning circle39.7 ft (12.1 m)Vehicle weight, GL 550Maximum roof
loadMaximum 198 lb
(90 kg)58 Vehicles without Off-Road Pro engineering package: the values vary depending on the level of the vehicle.
59 Vehicles with Off-Road Pro engineering package: the values vary depending on the level of the vehicle.372Vehicle dataTechnical data
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