wheel size Lancia Thesis 2006 Owner handbook (in English)

191
To make ESP, ASR and
ABS systems work prop-
erly, 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. stantly changed and controlled in
the attempt to keep the driver’s
direction.
The ESP system considerably
increases the car safety in several
critical conditions and it is particu-
larly useful during overtaking, when
the grip conditions on the road bed
change.ASR FUNCTION (ANTISLIP
REGULATION)
General
The ASR function is part of the
ESP system and it checks the car
drive, taking action every time one
or both driving wheels slip, thus pre-
venting car instability and tyre wear.
On the basis of slipping conditions,
two different check systems are acti-
vated:
– if slipping affects both driving
wheels, as a result of the excessive
force transmitted, the ASR function
reduces the power supplied by the
engine;
– if slipping affects only one of the
driving wheels, the ASR function
automatically brakes the slipping
wheel, with an effect similar to the
self-locking differential.The action of the ASR function is
particularly useful in the following
conditions:
– internal wheel slipping when cor-
nering due to load dynamic varia-
tions and excessive acceleration;
– excessive power supplied to
wheels according to the road bed;
– acceleration on slippery ground,
covered with snow or ice;
– in case of grip loss on wet ground
(aquaplaning).
ASR function activation
The ASR function is activated
automatically whenever the engine
is started.
During driving it is possible to dis-
engage and engage this function by
pressing button A(fig. 142) on the
central console.
When the ASR function is on, sym-
bol Vis lighted on the multifunc-
tion display together with the mes-
sage “ASR ON”.

256
Make sure that any mats
are appropriate in size:
any hindrance, even
slight, to the braking system may
require a higher pedal stroke
than normal.
Water, ice and salt on
the road may deposit on
brake disks, reducing
braking efficiency the first time
they are used.Driving while drunk or
under the influence of
drugs or certain medi-
cines is dangerous both for you
and other road users.
Always fasten both front
and back seat belts,
including child restraint
systems if there are children trav-
elling with you. Travelling with
seat belts unfastened increases
the risk of injury or death if you
are involved in a collision. Take care when fitting
additional spoilers, alloy
rims and wheel caps: they
might reduce ventilation of the
brakes, thus their efficiency dur-
ing abrupt braking or long down-
hill slopes.
Never drive with objects
on the floor in front of the
driver’s seat: they might
get stuck under the pedals mak-
ing it impossible to accelerate or
brake.

356
RIMS AND TYRES
Alloy rims or steel.
Tubeless tyres with radial carcass.
The homologated tyres are listed in
the log book.
IMPORTANTIn the event of dis-
crepancies between information
given in the Owner Handbook and
that shown in the Log Book, refer to
the latter one.
To ensure safety of the car in
movement, it must be fitted with
tyres of specified size and of the
same make and type on all wheels.
IMPORTANTDo not use inner
tubes with tubeless tyres. CORRECT TYRE READING
Below, please find the instructions
needed to understand the meaning
of the code stamped on the tyre, as
shown in fig. 6.
The code may be in one of the ways
given in the example.
Example:
225/50 R 17 94 W
or
225/50 ZR 17 94W
fig. 6
L0A0257b
225= Nominal width (S, distance
in mm between sides)
50= Percentage height/width
ratio (H/S)
R= Radial tyre
ZR= Radial tyre, with speed over
240 km/h
17= Rim diameter in inches (Ø)
94= Load index (capacity)
W= Maximum speed index.