2018 MERCEDES-BENZ GLA SUV wheel size

Maximum tire load .........................316
Maximum tire load (definition) ....... 318
MOExtended tires .......................... 301
Optional equipment weight (defi-
nition) ............................................ 319
PSI (pounds per square inch) (def-
inition) ...........................................3 19
Replacing ....................................... 319
Service life ..................................... 300
Sidewall (definition) ....................... 319
Speed rating (definition) ................ 318
Storing ...........................................3 20
Structure and characteristics
(definition) ..................................... 317
Summer tires ................................. 301
Temperature .................................. 314
TIN (Tire Identification Number)
(definition) ..................................... 319
Tire bead (definition) ......................3 19
Tire pressure (definition) ................ 319
Tire pressures (recommended) ...... 318
Tire size (data) ............................... 323
Tire size designation, load-bearing
capacity, speed rating .................... 314
Tire tread ....................................... 300
Tire tread (definition) ..................... 319
Total load limit (definition) ............. 319
Traction ......................................... 313
Traction (definition) ....................... 319
Tread wear ..................................... 313
Uniform Tire Quality Grading
Standards ...................................... 313
Uniform Tire Quality Grading
Standards (definition) .................... 318
Wear indicator (definition) ............. 319
Wheel rim (definition) .................... 318
see Flat tire
Tool
see Vehicle tool kit
Top Tether ............................................ 56
Tow-starting
Emergency engine starting ............ 297
Important safety notes .................. 294
Installing the towing eye ................ 295
Removing the towing eye ............... 295
Towing a trailer
ESP
®(Electronic Stability Pro-
gram) ............................................... 66 To
wing away
Important safety guidelines ........... 294
Installing the towing eye ................ 295
Notes for 4MATIC vehicles ............ 296
Removing the towing eye ............... 295
Transporting the vehicle ................ 296
With both axles on the ground ....... 296
With the front axle raised ............... 295
Towing eye ......................................... 283
Traction system
see ETS/4ETS (Electronic Trac-
tion System)
Traffic reports
see also Digital Operator's Man-
ual .................................................. 239
Transmission
see Automatic transmission
Transmission position display
(DIRECT SELECT lever) ...................... 132
Transporting the vehicle .................. 296
Traveling uphill
Brow of hill ..................................... 154
Driving downhill ............................. 154
Maximum gradient-climbing capa-
bility ............................................... 154
Trim pieces (cleaning instruc-
tions) .................................................. 280
Trip computer (on-board com-
puter) .................................................. 189
Trip odometer
Calling up ....................................... 189
Resetting (on-board computer) ...... 190
Trunk
Emergency release button ............... 83
Opening (from outside the vehi-
cle, HANDS-FREE ACCESS) .............. 80
Trunk lid
see Tailgate
Turn signals
Display message ............................ 211
Replacing bulbs (front) ................... 107
Switching on/off ........................... 103
Two-way radio
Frequencies ................................... 326
Installation ..................................... 326
Transmission output (maximum) .... 326
Index21

Important safety notes .................. 299
Information on driving .................... 299
Interchanging/changing ................ 319
Mounting a new wheel ................... 322
Removing a wheel .......................... 322
Storing ........................................... 320
Tightening torque ........................... 323
Wheel size/tire size ....................... 323
Wheels and tires
Changing a wheel .......................... 320
Window curtain air bag
Display message ............................ 208
Operation ......................................... 46
Windows
see Side windows
Windshield
Defrosting ...................................... 119
Windshield washer system
Adding washer fluid ....................... 272
Important safety notes .................. 332
Windshield wipers
Display message ............................ 225
Problem (malfunction) ................... 111
Rear window wiper ........................ 109
Replacing the wiper blades ............ 109
Switching on/off ........................... 108
Winter driving
Slippery road surfaces ................... 150
Snow chains .................................. 302
Winter operation
General notes ................................ 301
Winter tires
M+S tires ....................................... 301
Wiper blades
Cleaning ......................................... 278
Important safety notes .................. 109
Replacing (rear window) ................ 111
Wooden trim (cleaning instruc-
tions) .................................................. 280
Workshop
see Qualified specialist workshop
Z
ZONE functionSwitching on/off ........................... 119
Index23

side. In addition, more drive torque is transfer-
red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP
®.
Off-road 4ETS (Electronic Traction Sys-
tem)
A 4ETS system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated (
Ypage 167).
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 60).
GWARNING
If ESP
®is malfunctioning, ESP®is unable to
stabilize the vehicle. Additionally, further driv-
ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP
®checked at a
qualified specialist workshop.
Vehicles without 4MATIC: when towing your
vehicle with the front axle raised, it is important
that you observe the notes on ESP
®
(Ypage 295).
If the å ESP®OFF warning lamp lights up
continuously, ESP®is deactivated.
If the ÷ ESP®warning lamp and the å
warning lamp are lit continuously, ESP®is not
available due to a malfunction.
Observe the information on warning lamps
(
Ypage 231) and display messages which may
be shown in the instrument cluster
(
Ypage 201).
Only use wheels with the recommended tire
sizes. Only then will ESP
®function properly.
Characteristics of ESP®
General information
If the ÷ ESP®warning lamp goes out before
beginning the journey, ESP®is automatically
active.
If ESP
®intervenes, the ÷ESP®warning lamp
flashes in the instrument cluster. If ESP
®intervenes:
XDo not deactivate ESP®under any circum-
stances.
XOnly depress the accelerator pedal as far as
necessary when pulling away.
XAdapt your driving style to suit the prevailing
road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle stops
moving. The engine starts automatically when
the driver wants to pull away again. ESP
®
remains in its previously selected status. Exam-
ple: if ESP®was deactivated before the engine
was switched off, ESP®remains deactivated
when the engine is switched on again.
Deactivating/activating ESP®(except
Mercedes‑AMG vehicles)
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 60).
You can select between the following states of
ESP
®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP
®, ESP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
The spinning of the wheels results in a cutting
action for better traction on loose surfaces.
It may be best to deactivate ESP
®in the follow-
ing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
iActivate ESP®as soon as the situations
described above no longer apply. ESP®will
otherwise not be able to stabilize the vehicle if
the vehicle starts to skid or a wheel starts to
spin.
64Driving safety systems
Safety

XPush release lever:down completely.
The steering column is unlocked.
XAdjust the steering wheel to the desired posi-
tion.
XPush release lever :up completely.
The steering column is locked.
XCheck if the steering column is locked. When
doing so, try to push the steering wheel up or down or try to move it in the fore-and-aft
direction.
Mirrors
Rear-view mirror
XAnti-glare mode: flick anti-glare lever :for-
wards or back.
Exterior mirrors
Adjusting the exterior mirrors
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder.
XTurn the SmartKey to position 1or2 in the
ignition lock (Ypage 124).
XExterior mirror on the front-passenger side:
press button ;.
Exterior mirror on the driver's side: press but-
ton :.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected exterior
mirror using button =as long as the indicator
lamp is lit.
XPress button =up, down, or to the right or
left until you have adjusted the exterior mirror
to the correct position. You should have a
good overview of traffic conditions.
The convex exterior mirrors provide a larger field of vision.
After the engine has been started, the exterior
mirrors are automatically heated at low outside
temperatures. Heating takes a maximum of ten
minutes.
iYou can also heat up the exterior mirrors
manually by switching on the rear window
defroster.
Mirrors97
Seats, steering wheel and mirrors
Z

You can recognize a MOExtended tire by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-bear-
ing capacity and the speed index (
Ypage 314).
MOExtended tires may be used only in conjunc-
tion with an activated tire pressure loss warning
system (Canada only) or tire pressure monitor
(USA only).
If a pressure loss warning message appears
in the multifunction display:
Robserve the instructions in the display mes-
sages (Ypage 220).
Rcheck the tire for damage
Rif driving on, observe the following notes
The driving distance possible in run-flat mode is
approximately 50 miles (80 km) when the vehi-
cle is partially laden. When the vehicle is fully
laden it is approximately 19 miles (30 km).
In addition to the vehicle load, the driving dis-
tance possible depends upon:
Rvehicle speed
Rroad condition
Routside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving conditions
or maneuvers, or it can be increased through a
moderate style of driving.
The driving distance possible in run-flat mode is
counted from the moment the tire pressure loss
warning appears in the multifunction display.
You must not exceed a maximum speed of
50 mph (80 km/h).
When replacing one or all tires, please observe
the following specifications for your vehicle's
tires:
Rsize
Rtype and
Rthe "MOExtended" marking
If a tire has gone flat and cannot be replaced
with a MOExtended tire, a standard tire may be
used as a temporary measure. Make sure that
you use the proper size and type (summer or
winter tir e).
Vehicles equipped wit
h MOExtended tires are
not equipped with a TIREFIT kit at the factory. It
is therefore recommended that you additionally
equip your vehicle with a TIREFIT kit if you mount
tires that do not feature run-flat properties, e.g.
winter tires. A TIREFIT kit may be obtained from
a qualified specialist workshop.
Important safety notes
GWARNING
When driving in emergency mode, the driving
characteristics deteriorate, e.g. when corner-
ing, accelerating quickly and when braking.
There is a risk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and driving maneuvers,
and driving over obstacles (curbs, potholes,
off-road). This applies in particular to a laden
vehicle.
Stop driving in emergency mode if:
Ryou hear banging noises.
Rthe vehicle starts to shake.
Ryou see smoke and smell rubber.
RESP®is intervening constantly.
Rthere are tears in the sidewalls of the tire.
After driving in emergency mode, have the
wheel rims checked at a qualified specialist
workshop with regard to their further use. The
defective tire must be replaced in every case.
TIREFIT kit
Important safety notes
TIREFIT is a tire sealant.
For USA only: You can use TIREFIT to seal punc-
tures of up to 0.16 in (4 mm), particularly those
in the tire tread. You can use TIREFIT at outside
temperatures down to Ò4 ‡ (Ò20 †).
GWARNING
In the following situations, the tire sealant is
unable to provide sufficient breakdown assis-
tance, as it is unable to seal the tire properly:
Rthere are cuts or punctures in the tire larger
than those mentioned above.
Rthe wheel rim is damaged.
Ryou have driven at very low tire pressures or on a flat tire.
There is a risk of an accident.
Do not drive the vehicle. Contact a qualified
specialist workshop.
Flat tire285
Breakdown assistance
Z

Check wheels and tires for damage at least once
a month. Check wheels and tires afterdriving
off-road or on rough roads. Damaged wheels
can cause a loss of tire pressure. Pay particular
attention to damage such as:
RCuts inthe tires
RPunctures inthe tires
RTears inthe tires
RBulges on tires
RDeformation or severe corrosion on wheels
Regularly check the tire tread depth and the
condition of the tread across the whole width of
the tire (
Ypage 300). Ifnecessary, turn the
front wheels to full lock inorder to inspect the
inner sideof the tire surface.
All wheels must have a valve cap to protect the valve against dirtand moisture. Do not mount
anything onto the valve other than the standard
valve cap or other valve caps approved by
Mercedes-Benz for your veh icle. Do not use any
other valve caps or systems, e.g. tire pressure
monitoring systems.
Regularly check the pressure of all the tires par-
ticularly prior to long tr ips.Adjust the tire pres-
sure as necessary (
Ypage 302).
Observe the notes on the emergency spare
wheel (
Ypage 323).
The service lifeof tires depends, among other
things, on the foll owing factors:
RDrivin g style
RTire pressure
RDistance covered
Notes on tire tread
GWAR NING
In suff icient tire tread willreduce tire traction.
The tire isno longer abletodissipat e water.
This means that on wet road surfaces, the risk
of hydroplaning increases, inparticular where
speed isnot adapted to suit the driving con-
dit ions. There isa risk of acc ident.
If the tire pressure istoo high or too low,tires
may exhibit diff erent levelsof wear at differ-
ent locations on the tire tread. Thus, you
should regularly check the tread depth and
the condition of the tread across the entire
widt h of all tires.
Minimum tire tread depth for:
RSummer tires: âin(3 mm)
RM+S tires: ãin(4 mm)
For safety reasons, replace the tires before
the legally prescribe d limit for the minimum
tire tread depth is reached.
Marking :shows where bar indicator ;for
tread wear is integrated into the tire tread.
Treadwear indicators (TWI) are required bylaw.
Six indicators are positioned on the tire tread.
They are vis ibleonce a tread depth of approx-
imately áin(1.6 mm) has been reached. Ifthis
is the case, the tire isso worn that it must be
replace d.
Selecting, mounting and replacing
tires
GWARNING
Exceeding the stated tire load-bearing capa-
city and the approved maximum speed could
lead to tire damage or the tire bursting. There is a risk of accident.
Therefore, only use tire types and sizes
approved for your vehicle model. Observe the
tire load rating and speed rating required for
your vehicle.
ROnly mount tires and wheels of the same type
and make.
Exception: itis permissible to install a differ-
ent type or make inthe event of a flat tire.
Observe here the "MOExtended tires (tires
300Operation
Wheels and tires

with run-flat characteristics)" section
(Ypage 284).
ROnly mount tires of the correct size onto the
wheels.
RBreak in new tires at moderate speeds for the
first 60 miles(100km). Th ene w tires only
reach their full performance after this dis-
tance.
RDo not drive with tires which have too little
tread depth, as this significantly reduces the
traction on wet roads (hydroplaning).
RReplace the tires after six years at the latest,
regardless of wear.
Observe the notes on the emergency spare
wheel (
Ypage 323).
MOExtended tires (tires with run-flat
properties)
With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive your vehi-
cle even if there is a total loss of pressure in one
or more tires.
MOExtended tires may only be used in conjunc-
tion with an activated tire pressure loss warning
system (Canada only) or tire pressure monitor
(USA only) and only on wheels specifically tes-
ted by Mercedes-Benz.
Notes on driving with MOExtended tires with a
flat tire (
Ypage 284).
Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory. It
is therefore recommended that you additionally
equip your vehicle with a TIREFIT kit if you mount
tires that do not feature run-flat properties, e.g.
winter tires. A TIREFIT kit may be obtained from
a qualified specialist workshop.
Winter operation
General notes
Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel"
section (
Ypage 319).
Driving with summer tires
At temperatures below 45 ‡ (+7 †),summer
tire slose el asticity and therefore traction and
braking power. Change the tires on your vehicle
to M+S tires. Using summer tires at very cold
temperatures could cause cracks to form,
thereby damaging the tires permanently.
Mercedes-Benz cannot accept responsibility for
this type of damage.
GWARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control of
your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately.
M+S tires
GWARNING
M+S tires with a tire tread depth of less than
ã in(4 mm ) are not suitable for use in winter
and do not provide sufficient traction. There is
a risk of an accident.
M+S tires with a tread depth of less than ãin
(4 mm) must be replaced immediately.
At temperatures below 45 ‡(+7 †), use winter
tires or all-season tires. Both types of tire are
identified by the M+S marking.
Only winter tires bearing the isnowflake
symbol in addition to the M+S marking provide
the best possible grip in wintry road conditions.
Only these tires will allow driving safety systems
such as ABS and ESP
®to function optimally in
winter. These tires have been developed specif-
ically for driving in snow.
Use M+S tires of the same make and tread on all
wheels to maintain safe handling characteris-
tics.
Always observe the maximum permissible
speed specified for the M+S tires you have
mounted.
Winter operation301
Wheels and tires
Z

When you have mounted the M+S tires:
XCheck the tire pressures (Ypage 302).
XRestart the tire pressure monitor (USA only)
(Ypage 309).
XRestart the tire pressure loss warning system
(Canada) (Ypage 306)
Snow chains
GWARNING
If snow chains are mounted on the rear
wheels, the snow chains could cause abrasion
to the vehicle body or to chassis components.
This could cause damage to the vehicle or the
tires. There is a risk of an accident.
To avoid hazardous situations:
Rnever mount snow chains on the rear
wheels
Ronly mount snow chains in pairs on the
front wheels.
!On some tire sizes there is not enough space
for snow chains. To avoid damage to the vehi-
cle or tires, observe the "Wheel and tire com-
binations" section under "Tires and wheels".
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that have
been specially approved for your vehicle by
Mercedes-Benz, or are of a corresponding
standard of quality. For more information,
please contact a qualified specialist workshop.
If you intend to mount snow chains, please bear
the following points in mind:
RSnow chains may not be mounted on all
wheel/tire combinations. Permissible wheel-
tire combinations (
Ypage 323).
ROnly use snow chains when driving on roads
completely covered by snow. Remove the
snow chains as soon as possible when you
come to a road that is not snow-covered.
RLocal regulations may restrict the use of snow
chains. Observe the appropriate regulations if
you wish to mount snow chains.
RDo not exceed the maximum permissible
speed of 30 mph (50 km/h).
RNever use Parking Pilot when snow chains are
installed (Ypage 173). You may wish to deactivate ESP
®when pulling
away with snow chains installed . You can
thereby allow the wheels to spin in a controlled
manner, achieving an increased driving force
(cutting action).
RDeactivate ESP®(all vehicles except
Mercedes-AMG vehicles) (Ypage 64)
RDeactivate ESP®(Mercedes-AMG vehicles)
(Ypage 65)
Information about driving with an emergency
spare wheel (
Ypage 323).
Tire pressure
Tire pressure specifications
Important safety notes
GWARNING
Underinflated or overinflated tires pose the
following risks:
Rthe tires may burst, especially as the load
and vehicle speed increase.
Rthe tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
Rthe driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is a risk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
Rmonthly, at least
Rif the load changes
Rbefore beginning a long journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
iThe data on the Tire and Loading Informa-
tion placard and tire pressure table shown
here are examples. Tire pressure specifica-
tions are vehicle-specific and may deviate
from the data shown here. The tire pressure
specifications that are valid for your vehicle
can be found on the Tire and Loading Infor-
302Tire pressure
Wheels and tires