APRILIA SR 125 - 1999, Manual

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32 use and maintenance SR 50 - SR 125 - SR 150
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This vehicle is provided with tubeless tyres.
a
WARNING
Periodically check the tyre inflation
pressure at room temperature, see p. 79
(TECHNICAL DATA).
If the tyres are hot, the measurement is
not correct.
Carry out the measurement especially
before and after long rides.
If the inflation pressure is too high, the
ground unevenness cannot be damp-
ened and is therefore transmitted to the
handlebar, thus compromising the driv-
ing comfort and reducing road holding
during turns.
If, on the contrary, the inflation pressure
is too low, the tyre sides (1) are under
greater stress and the tyre itself may
slip on the rim or it may become loose,
with consequent loss of control of the
vehicle.
In case of sudden braking the tyres
could even get out of the rims. Further,
the vehicle could skid while turning.
Check the surface and the wear of the
tyres, since tyres in bad conditions can
impair both the grip and the controlla-
bility of the vehicle.
Some types of tyres homologated for
this vehicle are provided with wear indi-
cators.
There are several kinds of wear indica-
tors.
For more information on how to check
the wear, contact your Dealer.
Visually check if the tyres are worn and
in this case have them changed.
If the tyres are old, even if not complete-
ly worn out, they may become hard and
may not ensure good road holding.
In this case, have the tyres changed.
Change the tyre when it is worn out or
in case of puncture on the tread side, if
the puncture is larger than 5 mm.
After repairing a tyre, have the wheels
balanced.
Use only tyres in the size suggested by
APRILIA
, see p. 79 (TECHNICAL DATA).
Do not install tyres with air tube on rims
for tubeless tyres and viceversa.