Traction
Traction is the result of friction between the
tires and the road surface.
TWR (Tongue Weight Rating)
The TWR specifies the maximu mpermissible
weight that the ball coupling of the trailer tow
hitch can support.
Treadwear indicators
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 0007in
(1.6 mm) has been reached.
Occupant distribution
The distribution of occupants in a vehicle at
their designated seating positions.
Total load limit
Rated cargo and luggage load plus
68 kilograms (150 lb) multiplied by the
number of seats in the vehicle. Changing
awheel Flat tire
You can find information on wha tto do in the
event of a flat tire in the "Breakdown
assistance" section (Y page 383).
Information on driving with MOExtended tires
in the event of a flat tire can be found under
"MOExtended tires (tires with run-flat
characteristics" (Y page 384).
The "Breakdown assistance" section
(Y page 383) contains information and notes
on how to deal with a flat tire. Information on
driving with MOExtended tires in the event of
a flat tire can be found under "MOExtended
tires (tires with run-flat characteristics"
(Y page 384).
Vehicles with an emergency spare
wheel: in the event of a flat tire, mount the
emergency spare wheel according to the
description under "Mounting a wheel"
(Y page 424). Rotating the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tires have different dimensions.
The wheel brakes or suspension components
may also be damaged. There is a risk of
accident.
Rotate front and rear wheels only if the wheels
and tires are of the same dimensions.
! On vehicles equipped with a tire pressure
monitor, electronic components are
located in the wheel.
Tire-mounting tools should not be used
near the valve. This could damage the
electronic components.
Only have tires changed at a qualified
specialist workshop.
Always observe the instructions and safety
notes in the "Mounting awheel" section
(Y page 424).
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the
intervals in the tire manufacturer's warranty
book in your vehicle documents. If this is not
available, the tires should then be rotated
every 3000 to 6000 miles (5000 to
10,000 km), or earlier if the tire wear requires
this. Do not change the direction of wheel
rotation.
Cleant he contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tire pressure and,
if necessary, restart the tire pressure loss
warning system or the tire pressure monitor. Changing
awheel
423Wheels and tires Z
Dimensions an
dweights Missing values were no
tavailableatt ime of
going to print. 0002
Opening
height 0003
Maximum
headroom Models
without
ON&OFFROAD
package 83.9 in -
86.9 in
(2132 mm - 2207 mm) 76.1 in -
79.1 in
(1934 mm - 2009 mm) Models with
ON&OFFROAD
package 83.9 in -
88.1 in
2132 mm - 2237 mm 76.1 in -
80.3 in
(1934 mm - 2039 mm) AMG vehicles
84.1 in -
86.6 in
2136 mm - 2199 mm All models (except for
AMG vehicles)
Vehicle widt
hincluding
exterior mirrors 84.3 in
(2141 mm) Maximum vehicle height
75.2 in
(1910 mm) Maximum vehicle height
(ON&OFFROAD package)
76.4 in
(1940 mm) Minimum vehicle height
(highway driving level)
72.8 in
(1850 mm) All models (except for
AMG vehicles)
Wheelbase
121.1 in
(3075 mm) Maximum ground
clearance
10.9 in
(276 mm) Maximum ground
clearance (ON&OFFROAD
package)
12.0 in
(306 mm) Minimum ground
clearance
7.9 in
(201 mm) Turning radius
40.7 ft
(12.40 m) Maximum roof load
220 lb
(100 kg) GL 450 4MATIC
BlueEFFICIENCY
GL 350 BlueTEC 4MATIC
Vehicle length
201.6 in
(5120 mm) GL 550 4MATIC
BlueEFFICIENCY
Vehicle length
202.6 in
(5146 mm) GL 63 AMG 4MATIC
Vehicle length
202.6 in
(5146 mm) Vehicle width including
exterior mirrors
84.3 in
(2141 mm) Vehicle width without
exterior mirrors
78.0 in
(1982 mm) Maximum vehicle height
74.9 in
(1902 mm) Vehicle data
447Technical data Z
Trailer loads
Trailer loads, trailer drawbar noseweights and axle loads Missing values were not availabl
eattime of going to print. All models
Permissible trailer load
,unbraked Permissible trailer load, braked (at
aminimu mgradient-
climbing capability of 12% fro mastandstill) 7500 lbs (3402 kg)
Maximum drawbar noseweight (the drawbar
noseweight is no tincluded in the trailer load) 600 lbs (272 kg)
Permissible rear axle load when towing
atrailer 3970 lbs (1800 kg)
Ball position
Ball positio
nofthe ball coupling
When choosing a ball coupling, the
dimensions stated in the illustration must not
be exceeded. Trailer tow hitch
449Technical data Z
