wheel bolts SMART FORTWO COUPE 2011 Owners Manual

The brake fluid level is correct when it
is between the minimum mark and the
maximum mark.
R If the brake fluid level has fallen
slightly below the minimum mark,
drive to an authorized smart center.
R If the brake fluid level has fallen
significantly below the minimum
mark, call Roadside Assistance or an
authorized smart center.XRemount the service flap and close it
( Y page 122).
Tires and wheels
Safety notes
Contact an authorized smart center for
information on tested and recommended
rims and tires for summer and winter
operation. They can also offer advice
concerning tire service and purchase.
GWarning!
Replace rims or tires with the same
designation, manufacturer and type as
shown on the original part. For further
information contact an authorized smart
center. If incorrectly sized rims and tires
are mounted, the wheel brakes or
suspension components can be damaged.
Also, the operating clearance of the wheels
and the tires may no longer be correct.
GWarning!
Worn, old tires can cause accidents. If the
tire tread is worn to minimum tread depth,
or if the tires have sustained damage,
replace them.
When replacing rims, only use genuine
smart wheel bolts specified for the
particular rim type. Failure to do so can
result in the bolts loosening and possibly
an accident.
Retreaded tires are not tested or
recommended by smart, since previous
damage cannot always be recognized on
retreads. The operating safety of the
vehicle cannot be assured when such tires
are used.GWarning!
If you feel a sudden significant vibration
or ride disturbance, or you suspect that
possible damage to your vehicle has
occurred, you should turn on the hazard
warning flashers, carefully slow down, and
drive with caution to an area which is a safe
distance from the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle or tires
appear unsafe, have the vehicle towed to the
nearest authorized smart center or tire
dealer for repairs.
GWarning!
Do not drive with a flat tire. A flat tire
affects the ability to steer or brake the
vehicle. You could lose control of the
vehicle. Continued driving with a flat tire
or driving at high speed with a flat tire
will cause excessive heat build-up and
possibly a fire.
Modifications to the brake system and
wheels and the use of brake dust rings are
not permissible.
Important guidelines
R Only use sets of tires and rims of the same
type and make.
R Tires must be of the correct size for the
rim.
R Break in new tires for approximately
60 miles (100 km) at moderate speeds.
R Regularly check the tires and rims for
damage. Dented or bent rims can cause
tire pressure loss and damage to the tire
beads.
126Tires and wheels>> Operation.
BA 451 USA, CA Edition A 2011; 1; 4, en-UShereepeVersion: 3.0.3.62010-05-11T15:12:26+02:00 - Seite 126

sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A represent
higher levels of performance on the
laboratory test wheel than the minimum
required by law.
Rotating tires
GWarning!
Do not rotate front and rear wheels as they
have different dimensions, e.g. rim size,
wheel offset etc. Otherwise, the handling
can be affected and you could endanger
yourself and others.
Thoroughly clean the mounting face of the
wheels and brake discs, i.e. the inner side
of the wheels/tires each time the wheels/
tires are changed. Check for and ensure
proper tire inflation pressure.
GWarning!
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
81 lb‑ft (110 Nm).
Only use genuine smart wheel bolts
specified for your vehicle’s rims.
For information on wheel change, see “Flat
tire” ( Y page 188).
Tire labeling
Besides tire name (sales designation) and
manufacturer name, a number of markings
can be found on a tire.
Following are some explanations for the
markings on your vehicle’s tires:
0046 Uniform Quality Grading Standards
( Y page 137)0047 DOT, Tire Identification Number (TIN)
( Y page 141)008A Maximum tire load ( Y page 135)0088 Maximum tire inflation pressure
( Y page 131)0086 Manufacturer0087 Tire ply material ( Y page 142)006E Tire size designation, load and speed
rating ( Y page 139)006F Load identification ( Y page 141)0070 Tire name
i
For illustration purposes only. Actual
data on tires are specific to each vehicle
and may vary from data shown in above
illustration.
For more information, see “Rims and
tires” ( Y page 217).
138Tires and wheels>> Operation.
BA 451 USA, CA Edition A 2011; 1; 4, en-UShereepeVersion: 3.0.3.62010-05-11T15:12:26+02:00 - Seite 138

XAfter driving for about 1.8 miles (3 km)
or ten minutes, take all of the
appropriate safety precautions and then
take the tire repair kit from the vehicle.XScrew the end of filler hose 0088 onto tire
valve 0072.XCheck the tire inflation pressure using
pressure gauge 0047.GWarning!
If tire inflation pressure has fallen below
130 kpa (1.3 bar, 20 psi) do not continue to
drive the vehicle.
Park your vehicle safely away from the
roadway and contact the nearest smart
center or call Roadside Assistance.
Have the damaged tire replaced.
XIf the tire inflation pressure is at least
130 kpa (1.3 bar, 20 psi), inflate or deflate
the tire to correct tire inflation
pressure (see Tire and Loading
Information placard located on the
driver’s door B‑pillar).
R To increase the tire inflation
pressure: Switch on the electric air
pump.
R To decrease the tire inflation
pressure: Open vent screw 008A. Recheck
the tire inflation pressure with the
electric air pump’s pressure gauge.XAfter checking the tire inflation
pressure, unscrew the end of filler
hose 0088 from tire valve 0072.XPlug filler hose with the stopper.XPlace the tire repair kit securely in the
vehicle.XScrew the valve cap onto the tire valve.
! The manufacturer is unable to
guarantee that all tire punctures can be
repaired with the tire repair kit, in
particular cuts or perforations larger
than approximately 0.16 in (4 mm) or away
from the tire’s tread. The manufacturer
is not liable for damage sustained
through improper use of the tire repair
kit.GWarning!
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated
tires wear excessively and/or unevenly,
adversely affect handling and fuel
economy, and are more likely to fail from
being overheated.
Do not overinflate tires. Overinflated
tires can adversely affect handling and
ride comfort, wear unevenly, increase
stopping distance, and result in sudden
deflation (blowout) because they are more
likely to become punctured or damaged by
road debris, potholes etc.
Do not overload the tires by exceeding the
specified load limit as indicated on the
Tire and Loading Information placard on
the driver’s door B‑pillar. Overloading the
tires can overheat them, possibly causing
a blowout. Overloading the tires can also
result in handling or steering problems, or
brake failure.
XDrive to the nearest authorized smart
center, to have the damaged tire
replaced.XContact an authorized smart center as
soon as possible to obtain a new filler
hose and a new tire sealant container.XBring used tire sealant materials to an
authorized smart center for proper
disposal.XReplace your tire sealant container
every 4 years. Replacement containers
are available at any authorized smart
center.GWarning!
After changing a tire, contact a smart
center to make sure the bolts holding the
wheel to the car are tight enough.
Otherwise, the wheels could come off. Each
192Flat tire>> Practical hints.
BA 451 USA, CA Edition A 2011; 1; 4, en-UShereepeVersion: 3.0.3.62010-05-11T15:12:26+02:00 - Seite 192

Steel rim with wheel cover
XVehicles with wheel cover on steel rim:
Pull the wheel cover off of the rim.
If necessary, use a suitable tool to pry
the wheel cover off.
XOn wheel to be changed, loosen but do not
yet remove the wheel bolts
(approximately one full turn with wheel
wrench).
Steel rim with wheel trim cap
XVehicles with wheel trim cap on steel
rim: On wheel to be changed, loosen but
do not yet remove the wheel bolts
(approximately one full turn with wheel
wrench).
XTake the wheel trim cap off.XPosition jack \000G under take-up
bracket \000F so that it is always vertical
as seen from the side, even if the vehicle
is parked on an incline.
The take-up brackets are identified by
the embossed recesses in the area of the
door sills.
! Only position the jack on the
designated take-up brackets. Otherwise,
the vehicle could be damaged.
XJack up the vehicle until the wheel is a
maximum of 1.2 in (3 cm) from the ground.
XUnscrew and remove the wheel bolts.
! Do not place wheel bolts in sand or dirt.
This could result in damage to the wheel
bolts and wheel hub threads.
XRemove the wheel.
Mounting the wheel
GWarning!
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized smart Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly
tightened wheel bolts can cause the wheel
194Wheel change>> Practical hints.
BA 451 USA, CA Edition A 2011; 1; 4, en-UShereepeVersion: 3.0.3.62010-05-11T15:12:26+02:00 - Seite 194

to come off. This could cause an accident.
Be sure to use the correct wheel bolts.
GWarning!
Only use genuine smart wheel bolts. Other
wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.
XClean contact surfaces of wheel and wheel
hub.
! To avoid paint damage, place wheel flat
against hub and hold it there while
installing first wheel bolt.
XGuide the wheel onto the wheel hub and
push it on.
XInsert two wheel bolts and tighten them
slightly.
XVehicles with wheel trim cap on steel
rim: Attach the wheel trim cap so that it
is held by the two wheel bolts.
XInstall last wheel bolt and tighten it
slightly.
XLower the vehicle until the vehicle is
resting fully on its own weight.
XRemove the jack.XTighten the wheel bolts. Observe a
tightening torque of 80 lb-ft (110 Nm).
GWarning!
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque
of 80 lb-ft (110 Nm).
Steel rim with wheel cover
XVehicles with wheel cover on steel rim:
Position wheel cover aperture \000F so
valve \000G fits through.
XPush the wheel cover evenly onto the
wheel rim with both hands.
XCheck that the wheel cover is fixed
securely to the wheel rim.
iThe Tire Pressure Monitoring System
(TPMS)* only functions on wheels that are
equipped with the proper electronic
sensors (Y page 129).
Battery
About the battery
Your vehicle’s battery is located in the
passenger footwell below the footrest
(Y page 197).
The battery should always be sufficiently
charged in order to achieve its rated
service life. Refer to Maintenance Booklet
for battery maintenance intervals.
If you use your vehicle mostly for short-
distance trips, you will need to have the
battery charge checked more frequently.
When replacing the battery, always use
batteries approved by smart.
Battery: 12 V and 42 Ah
If you do not intend to operate your vehicle
for an extended period of time, consult an
Battery195>> Practical hints.* optionalBA 451 USA, CA Edition A 2011; 1; 4, en-UShereepeVersion: 3.0.3.62010-05-11T15:12:26+02:00 - Seite 195Z