2007 Alfa Romeo 147 wheel

VEHICLE MAINTENANCE
238
WINDSCREEN/
REARSCREEN WIPERS
BLADES
Periodically clean the rubber part using spe-
cial products; TUTELA PROFESSIONAL
SC 35is recommended.
If the rubber blades are bent or worn they
should be replaced. In any case they should
be changed once a year.
A few simple notions can reduce the pos-
sibility of damage to the blades:
– If the temperature falls below zero,
make sure that ice has not frozen the rub-
ber against the glass. If necessary, thaw us-
ing an antifreeze product.
– Remove any snow from the glass: in ad-
dition to protecting the blades, this prevents
effort on the motor and overheating.
– Do not operate the windscreen and
rearscreen wipers on dry glass.
RUBBER HOSES
As far as the brake system and fuel sup-
ply rubber hoses are concerned, carefully fol-
low the Scheduled Maintenance Programme
of this chapter. Indeed, ozone, high tem-
peratures and the prolonged lack of fluid in
the system may cause hardening and crack-
ing of the hoses, with possible leaks. Care-
ful control is therefore necessary.
Do not cross switch the
tyres, moving them from
the right of the car to the left and
vice versa.
WARNING
Alloy rim painting involving
temperatures exceeding
150°C should be avoided since
wheel mechanical characteristics
could be impaired.
WARNING

VEHICLE MAINTENANCE
240
HEADLIGHT WASHERS
Regularly check that the spray jets are in-
tact and clean (fig. 17).
If it is necessary to direct the jet, contact
an Alfa Romeo Authorised Service.
BODYWORK
PROTECTION FROM
ATMOSPHERIC AGENTS
The main causes of corrosion are:
– atmospheric pollution
– salty air and humidity (coastal areas, or
hot humid climates)
– seasonal environment conditions.
Not to be underestimated is also the abra-
sive action of wind-borne atmospheric dust
and sand and mud and gravel raised by oth-
er vehicles.
On your
Alfa 147 GTA, Alfa Romeo
has implemented the best manufacturing
technologies to effectively protect the body-
work against corrosion.
These include:
– Painting products and systems which
give the vehicle particular resistance to cor-
rosion and abrasion.
– Use of galvanised (or pretreated) steel
sheets, with high resistance to corrosion.
– Spraying the underbody, engine com-
partment, wheel arches and other parts with
highly protective wax products.
fig. 17
A0A0425m
– Spraying of plastic parts, with a protec-
tive function, in the more exposed points:
underdoor, inner wheel arch linings, etc.
– Use of “open” boxed sections to pre-
vent condensation and pockets of moisture
from triggering rust inside.
VEHICLE EXTERIOR AND
UNDERBODY WARRANTY
TheAlfa 147 GTAis guaranteed
against perf oration due to rust of any orig-
inal element of the structure or body. For the
general terms of this warranty, refer to the
Warranty Booklet.

TECHNICAL SPECIFICATIONS
247
SPARK PLUGS
Clean, intact spark plugs are determinant
with regard to engine efficiency and for re-
ducing the emission of pollutants.Spark plugs should be re-
placed at the intervals
specified in the Scheduled
maintenance programme. Only use
spark plugs of the specified type:
if the thermal capacity is inade-
quate or if the envisaged life is not
guaranteed inconveniences may en-
sue.
BRAKES
Service brakes: – front
– rear
Parking brake
If examined by an expert eye, the ap-
pearance of a spark plug is a sound clue
for locating a fault, even if not involving the
ignition system. Therefore if you are expe-
riencing any engine problems, it is impor-
tant to have the spark plugs checked by Al-
fa Romeo Authorized Services.
STEERING
Type
Turning radius (between pavements)
3.2 V6 24V - 3.2 V6 24V Selespeed
Disk self-ventilated
Disk
3.2 V6 24V 3.2 V6 24V Selespeed
Rack and pinion.
Hydraulic power steering with fluid reservoir in engine compartment
12.1 m 12.1 m Wheel anti-look system (ABS) with electronic braking distribution.
Servo-brake. Electronic control with brake pad wear sensors. Gaskets of ecological type.
Controlled by hand lever operating rear brakes.

TECHNICAL SPECIFICATIONS
248
WHEELS
Standard fittings
Rims
Tyres
Optional items
Rims
Tyres
Winter tyres
(*)IMPORTANTChainable tyres; see paragraph "Snow chains" in section "Correct use of the car".
(▼) Size certified and admitted only for YOKOHAMA.3.2 V6 24V - 3.2 V6 24V Selespeed
7,5J x 17“
225/45 ZR17“ 91Y(unchainable tyres)
8J x 18”
235/35 R18” 90Y (▼) (unchainable tyres)
215/45 R17” 87W (*)
215/45 ZR17” 87W (*)
225/45 ZR17“ 91Q (M+S) (unchainable tyres)
TYRES INFLATION PRESSURES COLD
With the tyre hot the inflating pressure should be +0.3 bar compared with the specified rating. Recheck pressure value with cold tyres.
With winter tyres the inflation pressure should be +0.2 bar compared with the specified rating.
Tyres
215/45 ZR17“ 87W
front rear
2.5 2.3
2.8 2.6Tyres
215/45 R17“ 87W
front rear
2.5 2.3
2.8 2.6Tyres
235/35 R18“ 90Y
front rear
2.5 2.3
2.8 2.6Tyres
225/45 ZR17“ 91Y
front rear
2.5 2.3
2.8 2.6
Reduced load
bar
(2 occupants)
Full load bar

TECHNICAL SPECIFICATIONS
249
RIMS AND TYRES
Alloy rims.
Radial Tubeless tyres.
The Log book shows all the homologated
tyres.
IMPORTANTIn the event of any dis-
crepancies between this Handbook and the
vehicle Log Book, only the latter should be
considered.
While the specified dimensions remain the
same, for driving safety, the vehicle must be
fitted with tyres of the same brand and type
on all wheels.
IMPORTANTDo not use inner tubes
with Tubeless tyres.
CORRECT TYRE
READING
(fig. 5)
Below are the instructions necessary to
know the meaning of the code stamped on
the tyre.
The code may be like one of the examples
given below.Load index (capacity)
60= 250 kg
61= 257 kg
62= 265 kg
63= 272 kg
64= 280 kg
65= 290 kg
66= 300 kg
67= 307 kg
68= 315 kg
69= 325 kg
70= 335 kg
71= 345 kg
72= 355 kg
73= 365 kg
74= 375 kg
75= 387 kg
76= 400 kg
77= 412 kg
78= 425 kg
79= 437 kg
80= 450 kg
81= 462 kg
82= 475 kg
83= 487 kg84= 500 kg
85= 515 kg
86= 530 kg
87= 545 kg
88= 560 kg
89= 580 kg
90= 600 kg
91= 615 kg
92= 630 kg
93= 650 kg
94= 670 kg
95= 690 kg
96= 710 kg
97= 730 kg
98= 750 kg
99= 775 kg
100= 800 kg
101= 825 kg
102= 850 kg
103= 875 kg
104= 900 kg
105= 925 kg
106= 950 kg
Example:
225/45 ZR17 91Y
225= Nominal width (S, distance
in mm between sides).
45= Percentage height/width ratio
(H/S).
ZR= Radial tyre with speed above
240 kph.
17= Rim diameter in inches (Ø).
91= Load index (capacity).
Y= Maximum speed index.

TECHNICAL SPECIFICATIONS
250
Example:
7.5 J x 17 H2 ET 43
Maximum speed index
Q= up to 160 km/h
R= up to 170 km/h
S= up to 180 km/h
T= up to 190 km/h
U= up to 200 km/h
H= up to 210 km/h
V= up to 240 km/h
W= up to 270 km/h
Y= up to 300 km/h
Maximum speed index
for snow tyres
Q M + S= up to 160 km/h
T M + S= up to 190 km/h
H M + S= up to 210 km/hCORRECT RIM READING
Below are the instructions necessary to
know the meaning of the code stamped on
the rim, as shown in fig. 5.
fig. 5
A0M0465m
7.5= rim width in inches (1)
J= rim drop centre outline (side pro-
jection where the tyre bead rests
(2)
17= rim nominal diameter in inches
(corresponds to diameter of the
tyre to be mounted) (3=Ø)
H2= “hump“ shape and number (relief
on the circumference holding the
Tubeless tyre bead on the rim)
ET 43= camber angle (distance be-
tween disk/rim line and wheel
rim centre line)

TECHNICAL SPECIFICATIONS
251
PERFORMANCE
Maximum speed
Acceleration from 0-100 km/h
Kilometer with standing start
3.2 V6 24V
246 km/h
6.3 s
26.1 s
WHEEL GEOMETRY
3.2 V6 24V - 3.2 V6 24V Selespeed
– 0° 24´ ± 20´
4° 6´ ± 30´
–2 ± 0.6 mm (*) (–18 ± 5)
– 1° 12´ ± 20´
+2.5 ± 1 mm (*) (23´ ± 9)
3.2 V6 24V Selespeed
246 km/h
6.3 s
26.1 s
– camber
Front wheels: – caster
– toe-in
Rear wheels:– camber
– toe-in
(*) The toe-in value, primes to mm conversion, is always calculated taking into account a 15" rim regardless of rims actually used. Should it be impossible
to set the 15" rim at the test bench, refer to primes value. The toe-in value, tolerance included, shall always be evenly distributed between the two wheels.

RIGHT HAND DRIVE VERSION
260
DASHBOARD
1. Side swivel air vents - 2. Fixed side window air vents - 3. Passenger’s front Air bag - 4. Tailgate release button - 5. Card holder - 6. Radio -
7. Centre swivel air vents - 8. Fixed upper vent - 9. Glass holder - 10. Fog lamp button - 11. Hazard warning light switch - 12. Rear fog guard
button - 13. Outer light control lever - 14. Speedometer with mileage recorder and trip recorder and headlamp aiming display - 15. Fuel level
gauge with reserve warning light - 16. Multifunction display - 17. Engine coolant fluid temperature gauge - 18. Rev counter - 19. Wind-
screen/rearscreen wiper control lever - 20. Bonnet opening lever - 21. Set of controls: trip meter reset, headlamp aiming device, trip comput-
er - 22. Ignition key and switch - 23. Horn - 24. Steering wheel locking/release lever - 25. Driver’s front Air bag - 26. Door locking button -
27. Controls for heating, ventilation and climate control - 28. Ashtray - 29. Cigar lighter - 30. Temperature sensor - 31Glovebox.
fig. 1A0A0475m