tire size SMART FORTWO COUPE 2014 User Guide

ity of the tire is limited to 186 mph
(300 km/h).
R Any tire with a speed capability above
186 mph (300 km/h) must include a “ZR” in
the size designation AND the service
description must be placed in parenthe-
sis. Example: 275/40 ZR 18 (99Y). The “(Y)”
speed rating in parenthesis designates
the maximum speed capability of the tire
as being above 186 mph (300 km/h). Con-
sult the tire manufacturer for the actual
maximum permissible speed of the tire.
All-season and winter tires Index Speed rating
Q M+S
7 up to 100 mph (160 km/h)
T M+S
7 up to 118 mph (190 km/h)
H M+S
7 up to 130 mph (210 km/h)
V M+S
7 up to 149 mph (240 km/h)
i
Not all M+S rated tires provide special
winter performance. Make sure the tires
you use show M+S and the mountain/snow-
flake marking 004Don the tire sidewall.
These tires meet specific snow traction
performance requirements of the Rubber
Manufacturers Association (RMA) and the
Rubber Association of Canada (RAC) and
have been designed specifically for use
in snow conditions. Load identification
i
For illustration purposes only. Actual
data on tires are specific to each vehicle
and may vary from data shown in above
illustration.
In addition to the tire load rating, special
load identification 0043may be molded into
the tire sidewall following the letter des-
ignating the tire speed rating 0084
(Y page 141).
No specification given: absence of any text
(like in above example) indicates a stand-
ard load (SL) tire.
XL or Extra Load: designates an extra load
(or reinforced) tire.
Light Load: designates a light load tire.
C, D, E: designates load range associated
with the maximum load a tire can carry at a
specified pressure. DOT, Tire Identification Number (TIN)
U.S. tire regulations require each new tire
manufacturer or tire retreader to mold a
TIN into or onto a sidewall of each tire
produced.
7 or M+S 004Dfor winter tires. 142
Tires and wheels>> Operation.

The TIN is a unique identifier which facil-
itates efforts by tire manufactures to
notify purchasers in recall situations or
other safety matters concerning tires and
gives purchasers the means to easily iden-
tify such tires.
The TIN is comprised of “Manufacturer’s
identification mark” 0044, “Tire size”0087,
“Tire type code” 0085, and “Date of manufac-
ture” 0083.
i For illustration purposes only. Actual
data on tires are specific to each vehicle
and may vary from data shown in above
illustration.
DOT (Department of Transportation) Tire branding symbol
0043which denotes the
tire meets requirements of the U.S. Depart-
ment of Transportation.
Manufacturer’s identification mark Manufacturer’s identification mark
0044
denotes the tire manufacturer.
New tires have a mark with two symbols.
Retreaded tires have a mark with four sym-
bols. For more information on retreaded
tires (Y page 127).
Tire size Code
0087indicates the tire size. Tire type code Tire type code
0085may, at the option of the
manufacturer, be used as a descriptive
code for identifying significant charac-
teristics of the tire.
Date of manufacture Date of manufacture
0083identifies the week
and year of manufacture.
The first two figures identify the week,
starting with “01” to represent the first
full week of the calendar year. The second
two figures represent the year.
For example, “3202” represents the 32nd
week of 2002. Tire ply material
i
For illustration purposes only. Actual
data on tires are specific to each vehicle
and may vary from data shown in above
illustration.
This marking tells you about the type of
cord and number of plies in the side-
wall 0043and under the tread 0044. Tire and loading terminology
Accessory weight The combined weight (in excess of those
standard items which may be replaced) of
transmission, power steering, power
brakes, power windows, power seats, radio, Tires and wheels
143>> Operation. Z

Normal occupant weight
The number of occupants the vehicle is
designed to seat, multiplied by 68 kilo-
grams (150 lbs).
Occupant distribution The distribution of occupants in a vehicle
at their designated seating positions.
Production options weight The combined weight of those installed
regular production options weighing over
5 lbs (2.3 kilograms) in excess of those
standard items which they replace, not
previously considered in curb weight or
accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty
battery, and special trim.
PSI (Pounds per square inch) A standard unit of measure for air pres-
sure.
Recommended tire inflation pressure The recommended tire inflation pressure
for normal driving conditions is listed on
the Tire and Loading Information placard
located on driver’s door B‑pillar and pro-
vides best handling, tread life and riding
comfort.
Rim A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated.
Sidewall The portion of a tire between the tread and
the bead. TIN (Tire Identification Number) Unique identifier which facilitates
efforts by tire manufacturers to notify
purchasers in recall situations or other
safety matters concerning tires and gives
purchasers the means to easily identify
such tires. The TIN is comprised of “Man-
ufacturer’s identification mark”, “Tire
size”, “Tire type code” and “Date of manu-
facture”.
Tire load rating
Numerical code associated with the maxi-
mum load a tire can support.
Tire ply composition and material used
This indicates the number of plies or the
number of layers of rubber-coated fabric
in the tire tread and sidewall. Tire manu-
facturers also must indicate the ply mate-
rials in the tire and sidewall, which
include steel, nylon, polyester, and others.
Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is approved.
Total load limit
Rated cargo and luggage load plus 68 kilo-
grams (150 lbs) times the vehicle’s desig-
nated seating capacity.
Traction
Force exerted by the vehicle on the road via
the tires. The amount of grip provided.
Tread
The portion of a tire that comes into con-
tact with the road. Tires and wheels
145>> Operation. Z

Treadwear indicators
Narrow bands, sometimes called “wear
bars” that show across the tread of a tire
when only 1
/ 16 in (1.6 mm) of tread remains.
Uniform Tire Quality Grading Standards A tire information system that provides
consumers with ratings for a tire’s trac-
tion, temperature and treadwear. Ratings
are determined by tire manufacturers
using U.S. government testing procedures.
The ratings are molded into the sidewall of
the tire.
Vehicle maximum load on the tire Load on an individual tire that is deter-
mined by distributing to each axle its
share of the maximum loaded vehicle
weight and dividing it by two. Winter driving
Before the onset of winter, have your vehi-
cle winterized at an authorized electric
drive smart center.
This service includes:
R Check of anticorrosion and antifreeze
concentration.
R Addition of washer concentrate to the
water of the windshield/rear window.
Use a windshield washer concentrate
labeled for winter which is formulated
for temperatures below freezing point
(Y page 218).
R 12 V battery test. The capacity of the
12 V battery test drops with decreasing
ambient temperature.
R Tire change. Winter tires
G
WARNING
Winter tires with a tread depth of less
than 1
/ 6 in (4 mm) must be replaced. They
are no longer suitable for winter opera-
tion.
Always use winter tires at temperatures
below 45 ¦(7¥) and whenever wintry road
conditions prevail. Not all M+S rated tires
provide special winter performance. Make
sure the tires you use show the mountain/
snowflake marking 004Don the tire side-
wall. These tires meet specific snow trac-
tion performance requirements of the Rub-
ber Manufacturers Association (RMA) and
the Rubber Association of Canada (RAC) and
have been designed specifically for use in
snow conditions. Use of winter tires is the
only way to achieve the maximum effective-
ness of the ABS and ESP ®
in winter opera-
tion.
For safe handling, make sure all mounted
winter tires are of the same make and have
the same tread design.
For information on winter tires for your
vehicle model, see the "Technical data"
section (Y page 216).
Always observe the speed rating of the win-
ter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your
vehicle, you must place a notice to this
effect where it will be seen by the driver.
Such notices are available at your tire
dealer or any authorized electric drive
smart center. Snow chains*
! Remember that snow chains must always
be compatible with the tire sizes of a
vehicle. Snow chains that are approved
by smart are only permitted for the fol-
lowing tire size: 146
Winter driving>> Operation.
* optional

approximately
1
/ 6 in (4 mm) on all four
wheels for the winter season to ensure nor-
mal balanced handling characteristics. On
packed snow, they can reduce your stopping
distance compared to summer tires.
Stopping distance, however, is still con-
siderably greater than when the road is not
covered with snow or ice. Exercise appro-
priate caution.
! Avoid spinning of a drive wheel for an
extended period when driving off on
slippery road surfaces. Otherwise, the
drivetrain could be damaged, which is
not covered by the smart Limited War-
ranty. Tire speed rating
Regardless of the tire speed rating, local
speed limits should be obeyed. Use prudent
driving speeds appropriate to prevailing
conditions. G
WARNING
Even when permitted by law, never operate
a vehicle at speeds greater than the maxi-
mum speed rating of the tires.
Exceeding the maximum speed for which
tires are rated can lead to sudden tire fail-
ure, causing loss of vehicle control and
possibly resulting in an accident and/or
personal injury and possible death, for you
and for others.
Make sure your tires have the required tire
speed rating as specified for your vehicle
in the “Technical data section”
(Y page 216), for example when purchasing
new tires.
For information on how to identify the tire
speed rating on a tire’s sidewall, see “Tire
size designation, load and speed rating”
(Y page 140).
If you are uncertain about the correct read-
ing of the information given on a tire’s sidewall, any authorized electric drive
smart center will be glad to assist you.
i
For information on speed ratings for
winter tires, see “All-season and winter
tires” (Y page 141). Winter driving instructions
The most important rule for slippery or icy
roads is to drive sensibly and to avoid
abrupt acceleration, braking and steering
maneuvers.
For information on driving with snow
chains*, see “Snow chains*” (Y page 146).
Road salts and chemicals can adversely
affect braking efficiency. Increased pedal
force may become necessary to produce the
normal braking effect.
Depressing the brake pedal periodically
when traveling at length on salt-strewn
roads can bring road-salt-impaired brak-
ing efficiency back to normal.
If the vehicle is parked after being driven
on salt-treated roads, the braking effi-
ciency should be tested as soon as possible
after driving is resumed. G
WARNING
Make sure not to endanger any other road
users when carrying out these braking
maneuvers. G
WARNING
The outside temperature display is not
designed to serve as an ice-warning device
and is therefore unsuitable for that pur-
pose. Indicated temperatures just above
the freezing point do not guarantee that the
road surface is free of ice.
For more information, see “Winter driving”
(Y page 146). Driving instructions
151>> Operation.
* optional Z

Display messages Possible causes/consequences and
0050
0050Solutions 00E5
Charge Cable Con‐ Charge Cable Con‐
nected nected The charging cable is inserted in the vehicle power socket.
The vehicle cannot be moved.
In addition, a warning signal sounds.
X
To drive off, remove the charging cable from the vehicle
power socket and stow the cable in the vehicle. Ready to Charge Ready to Charge The vehicle is prepared for the high‑voltage battery to be
charged. It may take 30 seconds for the charging process to
begin.
Malfunction Malfunction Despite the charging cable being correctly inserted in the
vehicle power socket, the high‑voltage battery does not
charge. There is a malfunction in the on-board charger.
X
Contact an authorized electric drive smart center. No Charge No Charge The voltage on the vehicle power socket is too low.
X
Check whether the charging cable is inserted correctly in
the power sockets of both the vehicle and the power source.
If necessary, unplug the charging cable from both sockets
and reinsert it.
If, afterwards, the message is still displayed:
X Contact an authorized electric drive smart center. Display messages Possible causes/consequences and
0050 0050Solutions 0077
Check Check
Tire
TirePressure
Pressure The tire inflation pressure in at least one tire is signifi-
cantly below the reference value.
X
Carefully bring the vehicle to a halt, avoiding abrupt steer-
ing and braking maneuvers.
X Check and adjust tire inflation pressure as required
(Y page 130).
X If necessary, change the wheel (Y page 195).G
WARNING
Each tire should be checked monthly when cold and inflated to the inflation pressure rec-
ommended by the vehicle manufacturer on the Tire and Loading Information placard. If your
vehicle has tires of a different size than the size indicated on the Tire and Loading Infor-
mation placard, you should determine the proper tire inflation pressure for those tires.
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires
is significantly underinflated. 164
Display messages>> Practical hints.

Problem Possible causes/consequences and
0050
0050Solutions 00ED
The yellow
drive diagnos-
tics indicator
lamp comes on
while driving. There may be a malfunction in the drive system.
X
Have the vehicle checked at an authorized electric drive
smart center immediately. 00ED
The red drive
diagnostics
warning lamp
comes on while
driving. There may be a malfunction in the drive system.
X
Stop the vehicle immediately in a safe location.
X Do not continue to drive.
X Switch off the drive system.
X Engage the parking brake when leaving the vehicle.
X Contact Roadside Assistance or an authorized electric drive
smart center. Tire Pressure Monitoring System (TPMS)*
Problem Possible causes/consequences and
0050 0050Solutions 0077
The yellow com-
bination low
tire pressure/
TPMS malfunc-
tion telltale
illuminates
continuously. The TPMS detects a loss of pressure in at least one tire.
X
Carefully bring the vehicle to a halt, avoiding abrupt steer-
ing and braking maneuvers. Observe the traffic situation
around you.
X Check and correct tire inflation pressure as required
(Y page 129).
If the tire inflation pressure in the respective tire(s) has
(have) been corrected, the combination low tire pressure/TPMS
malfunction telltale goes out after a few minutes of driving.
See also “Restarting the TPMS” (Y page 132).0077
The combina-
tion low tire
pressure/TPMS
malfunction
telltale flashes
60 seconds and
then stays illu-
minated. There is a malfunction in the TPMS.
X
Have the TPMS checked at an authorized electric drive smart
center.
After the malfunction has been remedied the combination low
tire pressure/TPMS malfunction telltale goes out after a few
minutes of driving. G
WARNING
Each tire should be checked monthly when cold and inflated to the inflation pressure rec-
ommended by the vehicle manufacturer on the Tire and Loading Information placard. If your
vehicle has tires of a different size than the size indicated on the Tire and Loading Infor-
mation placard, you should determine the proper tire inflation pressure for those tires. What to do if ...
173>> Practical hints.
* optional Z

Mixed size tires
i Abbreviations used in the following tables:
R FA: Front Axle
R RA: Rear Axle All-season tires Light alloy rims
FA
RA 155/60 R 15 74T M+S
175/55 R 15 77T M+S 4.5 J x 15 H2
Wheel offset: 0.93 in (23.5 mm)
5.5 J x 15 H2
Wheel offset: 0.87 in (22 mm)
Winter tires
12 Light alloy rims
FA
RA 155/60 R 15 74T M+S004D
175/55 R 15 77T M+S004D 4.5 J x 15 H2
Wheel offset: 0.93 in (23.5 mm)
5.5 J x 15 H2
Wheel offset: 0.87 in (22 mm)
Service fluids and capacities
Notes
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by smart.
Please contact an authorized electric
drive smart center for products tested and
approved by smart. G
WARNING
Comply with all valid regulations with
respect to handling, storing and disposing
of service fluids. Otherwise you could
endanger persons or the environment.
Keep service fluids out of the reach of chil-
dren.
For health reasons, you should prevent
service fluids from coming into direct
contact with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.
12 Not available as factory equipment. Service fluids and capacities
217>> Technical data. Z