2017 MERCEDES-BENZ CLA tire size

General notes ................................ 289
Important safety notes .................. 290
Radio type approval for the tire
pressure monitor .......................... .2 92
Restarting ...................................... 291
Warning lamp ................................. 226
Warning message .......................... 291
TIREFIT kit .......................................... 268
Important safety notes .................. 268
Storage location ............................ 266
Tire pressure not reached .............. 269
Tire pressure reached .................... 270
Tires
Aspect ratio (definition) ................. 301
Average weight of the vehicle
occupants (definition) .................... 299
Bar (definition) ............................... 299
Changing a wheel .......................... 301
Characteristics .............................. 299
Checking ........................................ 282
Curb weight (definition) ................. 300
Definition of terms ......................... 299
Direction of rotation ...................... 302
Display message ............................ 209
Distribution of the vehicle occu-
pants (definition) ............................ 301
DOT (Department of Transporta-
tion) (definition) ............................. 299
DOT, Tire Identification Number
(TIN) ............................................... 299
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 300
General notes ................................ 306
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 300
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 300
Important safety notes .................. 282
Increased vehicle weight due to
optional equipment (definition) ...... 300
Information on driving .................... 282
Kilopascal (kPa) (definiti on) ........... 300
La b
eling (overview) ........................ 296
Load bearing index (definition) ...... 301
Load index ..................................... 298
Load index (definition) ................... 300
M+S tires ....................................... 284 Maximum load on a tire (defini-
tion) ............................................... 300
Maximum loaded vehicle weight
(definition) ..................................... 300
Maximum permissible tire pres-
sure (definition) ............................. 300
Maximum tire load ......................... 298
Maximum tire load (definition) ....... 300
MOExtended tires .......................... 284
Optional equipment weight (defi-
nition) ............................................ 301
PSI (pounds per square inch) (def-
inition) ........................................... 301
Replacing ....................................... 301
Service life ..................................... 283
Sidewall (definition) ....................... 301
Speed rating (definition) ................ 300
Storing ........................................... 302
Structure and characteristics
(definition) ..................................... 299
Summer tires ................................. 284
Temperature .................................. 296
TIN (Tire Identification Number)
(definition) ..................................... 301
Tire bead (definition) ...................... 301
Tire pressure (definition) ................ 301
Tire pressures (recommended) ...... 300
Tire size (data) ............................... 306
Tire size designation, load-bearing
capacity, speed rating .................... 296
Tire tread ....................................... 283
Tire tread (definition) ..................... 301
Total load limit (definition) ............. 301
Traction ......................................... 295
Traction (definition) ....................... 301
Tread wear ..................................... 295
Uniform Tire Quality Grading
Standards ...................................... 295
Uniform Tire Quality Grading
Standards (definition) .................... 300
Wear indicator (definition) ............. 301
Wheel rim (definition) .................... 300
see Fla t ti re
To
p Tether ............................................ 56
Tow-starting
Emergency engine starting ............ 279
Important safety notes .................. 276
Installing the towing eye ................ 277 Index 19

Vehicle dimensions ........................... 314
Vehicle emergency locking ................ 76
Vehicle identification number
see VIN
Vehicle identification plate .............. 308
Vehicle tool kit .................................. 266
Ventilation
Setting the vents ........................... 119
Video
Operating the DVD ......................... 180
see also Digital Operator's Man-
ual .................................................. 227
VIN
Seat ............................................... 309
Type plate ...................................... 308
W Warning and indicator lamps
ABS ................................................ 218
Active Brake Assist ........................ 225
Brakes ........................................... 217
Check Engine ................................. 222
Coolant .......................................... 223
Distance warning ........................... 225
ESP ®
.............................................. 219
ESP ®
OFF ....................................... 220
Fuel tank ........................................ 222
Overview .......................................... 32
PASSENGER AIR BAG ...................... 40
Reserve fuel ................................... 222
Restraint system ............................ 222
Seat belt ........................................ 216
SPORT handling mode ................... 220
Tire pressure monitor .................... 226
Warranty .............................................. 24
Washer fluid
Display message ............................ 214
Weather display (COMAND)
see also Digital Operator's Man-
ual .................................................. 227
Wheel and tire combinations
Tires ............................................... 306
Wheel bolt tightening torque ........... 305
Wheel chock ...................................... 302
Wheels
Changing a wheel .......................... 301
Checking ........................................ 282 Cleaning ......................................... 261
Important safety notes .................. 282
Information on driving .................... 282
Interchanging/changing ................ 301
Mounting a new wheel ................... 304
Removing a wheel .......................... 304
Storing ........................................... 302
Tightening torque ........................... 305
Wheel size/tire size ....................... 306
Window curtain air bag
Display message ............................ 196
Operation ......................................... 46
Windows
see Side windows
Windshield
Defrosting ...................................... 116
Windshield washer system
Adding washer fluid ....................... 257
Important safety notes .................. 313
Windshield wipers
Display message ............................ 214
Problem (malfunction) ................... 108
Replacing the wiper blades ............ 107
Switching on/off ........................... 106
Winter driving
Slippery road surfaces ................... 147
Snow chains .................................. 285
Winter operation
General notes ................................ 284
Winter tires
M+S tires ....................................... 284
Wiper blades
Cleaning ......................................... 262
Imp o
rtant safety notes .................. 107
Wooden trim (cleaning instruc-
tions) .................................................. 264
Workshop
see Qualified specialist workshop
Z
ZONE function
Switching on/off ........................... 116 Index 21

X
Make sure that the engine cannot be started
via your smartphone ( Y
page 122).X
Make sure that the passengers are not endan-
gered as they do so. Make sure that no one is
near the danger area while a wheel is being
changed. Anyone who is not directly assisting
in the wheel change should, for example,
stand behind the barrier. X
Get out of the vehicle. Pay attention to traffic
conditions when doing so. X
Close the driver's door.
MOExtended tires (tires with run-flat
properties)
General notes 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. The affected tire must not show
any clearly visible damage.
You can recognize MOExtended tires 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 ( Y
page 296).
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: R
observe the instructions in the display mes-
sages ( Y
page 209).R
check the tire for damage. R
if 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: R
Vehicle speed R
Road condition R
Outside 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: R
size R
type and R
the "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 tire).
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.
Important safety notes
G WARNING
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: R
you hear banging noises. R
the vehicle starts to shake. R
you see smoke and smell rubber. R
ESP ®
is intervening constantly. R
there 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. Flat tire 267
Breakdown assistance Z

with run-flat characteristics)" section
( Y
page 267).R
Only mount tires of the correct size onto the
wheels. R
Break in new tires at moderate speeds for the
first 60 miles (10 0 km). Th e ne w tires only
reach their full performance after this dis-
tance. R
Do not drive with tires which have too little
tread depth, as this significantly reduces the
traction on wet roads (hydroplaning). R
Replace the tires after six years at the latest,
regardless of wear.
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 ( Y
page 267).
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 ( Y
page 301).
Driving with summer tires
At temperatures below 45 ‡ (+7 †), summer
tires lose elasticity 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.
G WARNING
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
G WARNING
M+S tires with a tire tread depth of less than

Snow chains
G WARNING
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: R
never mount snow chains on the rear
wheels R
only 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: R
Snow chains may not be mounted on all
wheel/tire combinations. Permissible wheel-
tire combinations ( Y
page 306).R
Only 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. R
Local regulations may restrict the use of snow
chains. Observe the appropriate regulations if
you wish to mount snow chains. R
Do not exceed the maximum permissible
speed of 30 mph (50 km/h). R
Do not use Parking Pilot when snow chains
are installed ( Y
page 162).
You may wish to deactivate ESP ®
( Y
page 63)
when pulling away with snow chains installed .
You can thereby allow the wheels to spin in a
controlled manner, achieving an increased driv-
ing force (cutting action). Tire pressure
Tire pressure specifications
Important safety notes
G WARNING
Underinflated or overinflated tires pose the
following risks: R
the tires may burst, especially as the load
and vehicle speed increase. R
the tires may wear excessively and/or
unevenly, which may greatly impair tire
traction. R
the 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: R
monthly, at least R
if the load changes R
before beginning a long journey R
under different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
i The 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-
mation placard and tire pressure table on the
vehicle.
General notes The recommended tire pressures for the tires
mounted at the factory can be found on the
labels described here.
Further information on tire pressures can be
obtained at a qualified specialist workshop. Tire pressure 285
Wheels and tires Z

Tire and Loading Information placard
C
Recommended tire pressures
The Tire and Loading Information placard is on
the B-pillar on the driver's side ( Y
page 292).
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold
tires. The recommended tire pressures are valid
for the maximum permissible load and up to the
maximum permissible vehicle speed.
Tire pressure table The tire pressure table is on the inside of the fuel
filler flap. It shows the tire pressure for all tires
permitted at the factory for this vehicle; see
illustration (example).
The tire pressure table contains the recommen-
ded pressures for cold tires for various operat-
ing conditions, i.e. differing load and speed con-
ditions.
If a tire size precedes a tire pressure, the fol-
lowing tire pressure information is only valid for
that tire size; see illustration (example). The load conditions "partially laden" and "fully
laden" are defined in the table for different num-
bers of occupants and amounts of luggage. The
actual number of seats may differ.
Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g. R18 .
Rim diameter is part of the tire size and can be
found on the tire sidewall ( Y
page 296).
If the tire pressures have been set to the lower
values for lighter loads and/or lower road
speeds, the pressures should be reset to the
higher values: R
if you want to drive with an increased load
and/or R
if you want to drive at higher speeds
i The tire pressures for increased loads and/
or higher road speeds, shown in the tire pres-
sure table, may have a negative effect on driv-
ing comfort.
If the tire pressure is not set correctly, this can
lead to an excessive build up of heat and a sud-
den loss of pressure.
For more information, contact a qualified spe-
cialist workshop.286
Tire pressure
Wheels and tires

X
Make sure that the SmartKey is in position 2
in the ignition lock ( Y
page 121).X
Press Y or e on the steering wheel to
select the Serv. menu.X
Press the c or d button to select
Tire Pressure .X
Press the v button.
The multifunction display shows the current
tire pressure for each tire or the Tire pres‐
sure will be displayed after driving
a few minutes message.X
Press the d button.
The multifunction display shows the Use
Current Pressures as New Reference
Values message.
If you wish to confirm the restart: X
Press the v button.
The Tire Press. Monitor Restarted mes-
sage appears in the multifunction display.
After driving for a few minutes, the system
checks whether the current tire pressures are
within the specified range. The new tire pres-
sures are then accepted as reference values
and monitored.
If you wish to cancel the restart: X
Press the 8 button.
The tire pressure values stored at the last
restart will continue to be monitored.
Radio type approval for the tire pres-
sure monitor Country Radio type approval number
USA FCC ID: MRXMW2433A
FCC ID: MRXGG4
FCC ID: MRXMC34MA4
Canada IC: 2546A-MW2433A
IC: 2546A-GG4
IC: 2546A-MC34MA4
Loading the vehicle
Instruction labels for tires and loads
G WARNING
Overloaded tires can overheat, causing a
blowout. Overloaded tires can also impair the steering and driving characteristics and lead
to brake failure. There is a risk of accident.
Observe the load rating of the tires. The load
rating must be at least half of the GAWR of
your vehicle. Never overload the tires by
exceeding the maximum load.
Two instruction labels on your vehicle show the
maximum possible load.
(1) The Tire and Loading Information placard is
on the B-pillar on the driver's side. The Tire
and Loading Information placard shows the
maximum permissible number of occu-
pants and the maximum permissible vehicle
load. It also contains details of the tire sizes
and corresponding pressures for tires
mounted at the factory.
(2) The vehicle identification plate is on the B-
pillar on the driver's side. The vehicle iden-
tification plate informs you of the gross
vehicle weight rating. It is made up of the
vehicle weight, all vehicle occupants, the
fuel and the cargo. You can also find infor-
mation about the maximum gross axle
weight rating on the front and rear axle.
The maximum gross axle weight rating is
the maximum weight that can be carried by
one axle (front or rear axle). Never exceed
the maximum load or the maximum gross
axle weight rating for the front or rear axle.
C
B-pillar, driver's side292
Loading the vehicle
Wheels and tires

Maximum permissible gross vehicle
weight rating X
Specification for maximum gross vehicle
weight C is listed in the Tire and Loading
Information placard: "The combined weight of
occupants and cargo should never exceed
XXX kilograms or XXX lbs."
The gross weight of all vehicle occupants, load
and luggage must not exceed the specified
value.
i The specifications shown on the Tire and
Loading Information placard in the illustration
are examples. The maximum permissible
gross vehicle weight rating is vehicle-specific
and may differ from that in the illustration.
You can find the valid maximum permissible
gross vehicle weight rating for your vehicle on
the Tire and Loading Information placard.
Number of seats Maximum number of seats C indicates the
maximum number of occupants allowed to
travel in the vehicle. This information can be
found on the Tire and Loading Information plac-
ard.
i The specifications shown on the Tire and
Loading Information placard in the illustration
are examples. The number of seats is vehicle-
specific and can differ from the details shown.
The number of seats in your vehicle can be
found on the Tire and Loading Information
placard.
Determining the correct load limit
Step-by-step instructions The following steps have been developed as
required of all manufacturers under Title 49,
Code of U.S. Federal Regulations, Part 575 pur-
suant to the "National Traffic and Motor Vehicle
Safety Act of 1966". X
Step 1: Locate the statement "The combined
weight of occupants and cargo should never
exceed XXX kg or XXX lbs." on your vehicle’s
Tire and Loading Information placard. X
Step 2: Determine the combined weight of
the driver and passengers that will be riding in
your vehicle. X
Step 3: Subtract the combined weight of the
driver and passengers from XXX kilograms or
XXX lbs. X
Step 4: The resulting figure equals the avail-
able amount of cargo and luggage load capa-
city. For example, if the "XXX" amount equals
1400 lbs and there will be five 150-lb pas-
sengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is
650 lbs (1400 - 750 (5 x 150) = 650 lbs). X
Step 5: Determine the combined weight of
luggage and cargo being loaded on the vehi-
cle. That weight may not safely exceed the
available cargo and luggage load capacity cal-
culated in step 4.
Example: steps 1 to 3
The following table shows examples on how to calculate total and cargo load capacities with varying
seating configurations and number and size of occupants. The following examples use a load limit of Loading the vehicle 293
Wheels and tires Z