2008 SMART FORTWO COUPE torque

Tires and wheels
>> Operation
207
Uniform Tire Quality Grading Standards
A tire information system that provides
consumers with ratings for a tire’s traction,
temperature and treadwear. Ratings are
determined by tire manufacturers using
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 determined
by distributing to each axle its share of the
maximum loaded vehicle weight and dividing it
by two.
Rotating tiresThoroughly clean the mounting face of the
wheels and brake disks, i.e. the inner side of
the wheels/tires each time the wheels/tires
are changed. Check for and ensure proper
tire inflation pressure.For information on wheel change, see "Flat
tire" (

page 265).
G
Warning!
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.
G
Warning!
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.

Flat tire
270
>> Practical hints.
!
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.>Drive to the nearest authorized smart cen

ter, to have the damaged tire replaced.
>Contact an authorized smart center as soon
as possible to obtain a new filler hose
4 and
a new tire sealant container
9.
>Bring used tire sealant materials to an
authorized smart center for proper dispos

al.
>Replace your tire sealant container every
4 years. Replacement containers are avail

able at any authorized smart center.
G
Warning!
Follow recommended tire inflation
pressures.
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 underinflate tires. Underinflated
tires wear excessively and/or unevenly,
adversely affect handling and fuel econ

omy, and are more likely to fail from being
overheated.
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. Overload

ing the tires can overheat them, possibly
causing a blowout. Overloading the tires
can also result in handling or steering
problems, or brake failure.
G
Warning!
After changing a tire, contact a smart
center to make sure that the bolts holding
the wheel to the car are tight enough.
Otherwise, the wheels could come off.
Each bolt should be tightened to a torque
of 81 lb
ft (110 Nm).

Engine
>> Technical data.
297
Engine specifications
All models
1
1 The quoted data apply only to the standard vehicle. Contact an authorized smart center for the corresponding data of all special bodies and special equipment.Engine
M132
Mode of operation
4
stroke engine, gasoline injection
Number of cylinders
3
Valves per cylinder
4
Bore
2.83 in (72 mm)
Stroke
3.22 in (81.8 mm)
Total piston displacement
61 cu in (1 000 cm
3)
Compression ratio
10.0:1
Output acc. to SAE J 1349
70 hp/5 800 rpm
(52 kW/5 800 rpm)
Maximum torque acc. to SAE J 1349
68 lb
ft/4 500 rpm
(92 Nm/4 500 rpm)
Maximum engine speed
6400rpm
Firing order
1
2
3
Poly
V
belt
802 mm

Electrical system
300
>> Technical data.
Electrical system
All models
Generator (alternator)
14 V/90 A
Starter motor
12 V/0.95 kW
Battery
12 V/42 Ah
Spark plugs
DENSO XU22 HDR9
Electrode gap
0.035 in (0.9 mm)
Tightening torque
11
15lb
ft(15
20Nm)