wheel size Alfa Romeo Brera/Spider 2007 Owner handbook (in English)

103
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND
CONTROLS
CORRECT USE
OF THE CAR
Performance of the
VDC system, in terms
of active safety should not in-
duce the driver to take point-
less and unnecessary risks.
The style of driving must in
any case always be adapted to
the conditions of the road sur-
face, visibility an traffic. Road
safety is always the driver’s
responsibility.
WARNING
During the use of the
space-saver spare
wheel (where provided), the
VDC system carries on work-
ing. However, you must re-
mind that the space-saver
spare wheel has dimensions
smaller than the standard tyre
and therefore its grip is re-
duced as to the other car tyres.
WARNING
For correct operation of
the VDC system, the
tyres must absolutely be of
the same brand and type on all
wheels, in perfect conditions
and, above all, of type, brand
and size specified.
WARNING
HILL HOLDER SYSTEM
This system is an integral part of the VDC
system and it is provided to facilitate
starting on slopes:
❒uphill: car at a standstill on a road
with a gradient higher than 6%, en-
gine running, clutch and brake ped-
al depressed, gearbox to neutral or
engaged gear other than reverse;
❒downhill: car at a standstill on a road
with a gradient higher than 6%, en-
gine running, clutch and brake ped-
al depressed and reverse gear en-
gaged.
At pickup the VDC system control unit
will keep brake force on wheels until
reaching the torque suitable for starting,
or in any case for about 1 second in or-
der to pass easily from the brake pedal
to the accelerator pedal.
FAILURE WARNING LIGHTS
In the event of failure, the VDC system
is automatically disconnected and the
warning light
ácomes on with fixed
light on the instrument panel (together
with a message on the display) (see sec-
tion “Warning lights and messages”). In
this case contact Alfa Romeo Authorized
Services as soon as possible.

105
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND
CONTROLS
CORRECT USE
OF THE CAR
Switching the ASR system
on/off
The ASR system switches on automati-
cally each time the instrument panel is
turned on.
When travelling the ASR can be
switched off by pressing briefly the
ASR/VDC button on the central console.
When the ASR is switched off this is
shown by the lighting up of the
ASR/VDC button led and by symbol
V
on the display.
If the ASR is switched off when travel-
ling, it will turn on again automatically
the next time the engine is started.
When travelling on snowy roads with
snow chains, it may be helpful to turn
the ASR off: in fact, in these conditions,
slipping of the driving wheels when mov-
ing off makes it possible to obtain bet-
ter drive.MSR system (engine braking
torque control)
It is an integral part of the ASR system
that in case of sudden gear shifting, cuts
in providing torque to the engine thus
preventing excessive driving wheel dri-
ve that, specially in poor grip conditions,
can lead to loss of stability.
For correct operation of
the ASR system, all
tyres must absolutely be of
the same brand, size and type,
in normal conditions of use and
at the pressure values speci-
fied in paragraph “Wheels” in
section “Technical Specifica-
tions”).
WARNING
Failure warnings
In the event of malfunctioning, the ASR
system is automatically disconnected
and symbol
Vwill be displayed. In this
case contact Alfa Romeo Authorized Ser-
vices as soon as possible.

150
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND
CONTROLS
CORRECT USE
OF THE CAR
Due to the snow tyre features, under
normal conditions of use or on long mo-
torway journeys, the performance of
these tyres is lower than that of normal
tyres. It is therefore necessary to limit
their use to the purposes for which they
are certified.
IMPORTANTWhen snow tyres are
used with a max speed index below the
one that can be reached by the car (in-
creased by 5%), place a notice in the
passenger compartment, plainly in the
driver’s view which states the max per-
missible speed of the snow tyres (as per
EC Directive).
All four tyres should be the same (brand
and track) to ensure greater safety
when driving and braking and better dri-
veability.
Remember that it is inappropriate to
change the direction of rotation of tyres.SNOW TYRES
Use snow tyres of the same size as the
normal tyres provided with the car.
Alfa Romeo Authorized Services will be
glad to provide advice concerning the
most suitable type of tyre for the cus-
tomer’s requirements.
For the type of tyre to be used, inflation
pressures and the specifications of snow
tyres, follow the instructions given in para-
graph “Wheels” in section “Technical
specifications”.
The winter features of these tyres are re-
duced considerably when the tread
depth is below 4 mm. In this case, they
should be replaced.
The max speed for
snow tyres with “Q”
marking is 160 km/h; 190
km/h for tyres with “T”
marking and 210 km/h for
tyres with H marking. The
Road Traffic Code speed lim-
its must however be always
strictly observed.
WARNING

151
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND
CONTROLS
CORRECT USE
OF THE CAR
IMPORTANTSnow chains cannot be
fitted to the space-saver spare wheel
(where provided). So, if a front (drive)
wheel is punctured and chains are need-
ed, a rear wheel should be fitted to the
front of the car and the spare wheel should
be fitted to the rear (adjust tyre pressure
to the specified value as soon as possi-
ble). This way with two normal drive
wheels, snow chains can be fitted to them
to solve an emergency.SNOW CHAINS
Use of snow chains should be in compli-
ance with local regulations.
Snow chains should only be applied to
the driving wheels (front wheels).
Check the tension of the chains after the
first few metres have been driven.
Use snow chains with reduced size: for
tyres 215/55 R16” use snow chains
with reduced size with max protrusion
beyond the tyre profile of 12 mm.
Use of snow chains may be compulso-
ry also for cars with four-wheel drive.
On tyres 225/50 R17”
only “spider” type
chains can be used.
Keep your speed down
when snow chains are
fitted. Do not exceed
40 km/h. Avoid pot-
holes, steps and pave-
ments and avoid also to drive
for long distances on roads not
covered with snow to prevent
damaging the car and the
roadbed.
WARNING
Disengage the ASR sys-
tem when snow chains
are fitted. Press button
ASR/VDC (see paragraph “ASR
system” in section “Dashboard
and controls”).
Tyres 235/45 R18”
cannot be fitted with
snow chains due to in-
terference with fender. On 3.2 JTS version
snow chains shall be fit-
ted to FRONT wheels.

UNDERSTANDING
TYRE MARKING fig. 5
Example: 215/55 R 16 93 V
215= Nominal width (S, distance be-
tween sidewalls in mm).
55= Percentage height/width ratio
(H/S).
R= Radial tyre.
16= Rim diameter in inches. (Ø).
93= Load rating (capacity).
V = Maximum speed index.
WHEELS
RIMS AND TYRES
Alloy rims. Tubeless tyres with radial car-
cass. The homologated tyres are listed
in the Log book.
WARNINGIn the event of discrep-
ancies between the information provid-
ed on this “Owner’s Manual” and the
“Log book”, consider the specifications
shown in the log book only.
On cars fitted with four-wheel drive, all
four tyres should be the same (brand
and track) to prevent damaging the 4-
WD system. The efficiency of the 4-WD
system however, is not jeopardized if
tyres with different wear conditions are
fitted.
242
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND
CONTROLS
CORRECT USE
OF THE CAR
A0F0186mfig. 5
Attaining to the prescribed size, to en-
sure safety of the car in movement, it
must be fitted with tyres of the same
make and type on all wheels.
WARNINGDo not use inner tubes
with Tubeless tyres.
SPACE-SAVER SPARE WHEEL
Pressed steel rim. Tubeless tyre.