APRILIA SR 50 - 2001 Manual page 42

TIRES
This vehicle is equipped with tubeless
tires.
WARNING
Check the tire inflation at room tempera-
ture at least once a week, see p. 88
(TECHNICAL DATA).
Pressure measurement must always be
carried out when the tires are cold, as
when the tires are warmed up, pressure
will increase, and if they are checked at
this time erroneous readings will be seen.
If the tire is inflated to too high a pressure,
an uncomfortably harsh ride will result,
and riding comfort will be compromised.
Also, road holding, especially during
turns and in wet conditions, will likewise
be compromised.
use and maintenance SR 50
42
If the tire is underinflated (pressure is
too low), the tire may slip on the rim with
consequent loss of control. Again, road
holding and handling characteristics will
be degraded, and brake performance will
be reduced.
When the tire is worn to a point where
any tread is less than 0.12 in (3 mm) deep,
the tire is worn out, and must be replaced.
Also, if a tire suffers a puncture that is
larger than 0.20 in (5 mm) in its longest
dimension, the tire must not be repaired,
but should be replaced.
After a tire is repaired, balance the
wheels. Use only tires that are listed, see
p. 88 (TECHNICAL DATA).
Insure that all tires are equipped with
properly installed valve caps.
WARNING
Do not ride the vehicle if the tire wear
indicators show that the tire is worn out.
Failure to heed this warning can lead to
an accident with subsequent serious
injury or even death.
Some types of tires homologated for this
vehicle are provided with wear indicators.
There are several kinds of wear
indicators.
For more information on how to check the
wear, contact your Dealer.
Visually check if the tires are worn and in
this case have them changed.
If a tire should go flat while you are riding
the vehicle, do not attempt to continue
riding. Avoid abrupt braking and steering
inputs, and avoid shutting the trottle
quickly. Slowly decrease the throttle
setting, moving to the side of the road,
using the engine compression to slow you
to a stop. Non-compliance with these
instructions may cause accidents with
consequent risk of injuries or even death.
If the tires are old, even if not completely
worn out, they may become hard and may
not ensure good road holding.
In this case, have the tires changed.
Have the tire changed when it is worn
out or in case of puncture on the tread
side, if the puncture is larger than 0.20
in (5 mm).
After repairing a tire, have the wheels
balanced.
Use only tires in the size suggested by
aprilia , see p. 88 (TECHNICAL DATA).
Do not install tires with air tube on rims
for tubeless tires and viceversa.
Make sure that the tires always have their
valve sealing caps on, to prevent them
from suddenly going flat.
Repair, maintenance, changing and
balancing of tires are very important to
your safety, and should only be performed
by qualified mechanics using the
appropriate tools.
For this reason, we suggest that you
have your tires serviced by your Local
aprilia Delear.