width MERCEDES-BENZ M-Class 2015 W166 User Guide

the tire. This specifies the load-bearing capa-
city more precisely.
Curb weight
The weight of a vehicle with standard equip-
ment including the maximum capacity of fuel,
oil and coolant. It also includes the air-condi- tioning system and optional equipment if
these are installed in the vehicle, but does notinclude passengers or luggage.
Maximum load rating
The maximum tire load is the maximum per-
missible weight in kilograms or lbs for which a
tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire.
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)
A standard unit of measure for tire pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tire pressure
This is pressure inside the tire applying an
outward force to each 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.
Cold tire pressure
The tires are cold:
R if the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
R if the vehicle has been driven for less than
1 mile (1.6 km). Tread
The part of the tire that comes into contact
with the road.
Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-perform-
ance brakes, level control, a roof rack or a
high-performance battery, are not included in the curb weight and the weight of the acces-
sories.
TIN (Tire Identification Number)
This is a unique identifier 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 (Tongue Weight Rating)
The TWR specifies the maximum permissible
weight that the ball coupling of the trailer tow
hitch can support. 422
All about
wheels and tiresWheels and tires

Vehicle data
General notes
Please note that for the specified vehicle
data:
R the heights specified may vary as a result
of:
- tires
- load
- condition of the suspension
- optional equipment
R optional equipment reduces the maximum
payload.
Observe the information relating to level con-
trol:
R AIRMATIC package (Y page 213)
R ON&OFFROAD package (Y page 206)Dimensions and weights
0043
0043
Opening height 0044
0044
Max.
headroom AMG vehicles
84.6 in -
87.0 in
(2148 mm - 2211 mm) 79.0 in
(2006 mm) All other mod-
els with:
0043 0043
Opening height 0044
0044
Max.
headroom Steel suspen-
sion
86.4 in
(2195 mm) 78.2 in
(1987 mm) AIRMATIC
package
84.3 in -
87.2 in
(2140 mm - 2215 mm) 76.0 in -
79.0 in
(1931 mm - 2006 mm) ON&OFF-
ROAD pack-
age
84.3 in -
88.4 in
(2140 mm - 2245 mm) 76.0 in -
80.2 in
(1931 mm - 2036 mm) AMG vehicles
Vehicle length
189.6 in
(4817 mm) Vehicle width including
exterior mirrors
84.3 in
(2141 mm) Maximum vehicle height
71.4 in
(1815 mm) Minimum vehicle height
69.0 in
(1752 mm) Wheelbase
114.8 in
(2915 mm) Maximum ground clear-
ance
9.2 in
(233 mm) Minimum ground clear-
ance
6.8 in
(172 mm) Turning radius
38.7 ft
(11.80 m) Maxi
mum roof load 220 lb
(100 kg) 456
Vehicle dataTechnical data

All other models
Vehicle width including
exterior mirrors
84.3 in
(2141 mm) Maximum vehicle height
(steel suspension)
70.7 in
(1796 mm) Maximum vehicle height
(AIRMATIC package)
71.6 in
(1818 mm) Maximum vehicle height
(ON&OFFROAD package)
72.8 in
(1848 mm) Minimum vehicle height
(highway driving level)
69.2 in
(1758 mm) Wheelbase
114.8 in
(2915 mm) Minimum ground clear-
ance (steel suspension)
8.0 in
(202 mm) Maximum ground clear-
ance (AIRMATIC package)
10.0 in
(255 mm) Maximum ground clear-
ance (ON&OFFROAD
package)
11.2 in
(285 mm) Minimum ground clear-
ance
(AIRMATIC package)
(ON&OFFROAD package)
7.1 in
(180 mm) Turning radius
38.7 ft
(11.80 m) Maximum roof load
220 lb
(100 kg) Model Vehicle
length ML 550 4MATIC
190.5 in
(4839 mm) All other models
189.1 in
(4804 mm) Vehicle data for off-road driving
Fording depth
0043
Fording depth Fording
depth Steel-sprung vehicles
20 in
(50 cm) Vehicles with the AIR-
MATIC package
Raised level 20 in
(50 cm) Vehicles with the ON&OFF-
ROAD package Off-road level 1 20 in
(50 cm) Off-road level 2 20 in
(50 cm) Off-road level 3 23.6 in
(60 cm) AMG vehicles
Raised level 20 in
(50 cm) For more information about off-road fording,
see (Y page 190). Vehicle data for off-road driving
457Technical data Z