Wheels / Tires; Inspecting The Wheels; Tires - APRILIA Scarabeo 50 I.E.-50 4T Workshop Manual

WHEELS / TIRES

Carefully read p. 2 (GENERAL SAFETY RULES).

INSPECTING THE WHEELS

♦ Make sure that the wheel rims are neither cracked, nor
deformed. Change them if necessary.
♦ Check the wheel eccentricity.
If it is deformed beyond the tolerance limits, check the
rim and the bearings.
If necessary, replace the wheel.
Eccentricity limit:
Vertical: 2 mm (0.07874 in)
Horizontal: 2 mm (0.07874 in)
♦ Check the wheel balancing.
♦ Place the wheel on a balancing stand, and rotate it
several times, observing the position in which the
wheel stops.
If the wheel is statically balanced, it will not always stop
in the same place. If it always stops in the same place,
the wheel is out of balance, and must be balanced.
Place balancing weights on the lightest side of the
wheel until it no longer stops in any one position after
being rotated several times.

TIRES

This vehicle is equipped with inner tube tires, see p. 8
(TECHNICAL DATA).
WARNING
Check the tire inflation at room temperature at least
once a week, see p. 8 (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 uncom-
fortably harsh ride will result, and riding comfort will
be compromised.
Also, road holding, especially during turns and in
wet conditions, will likewise be compromised.
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 3 mm (0.12 in) deep, the tire is worn out, and must
be replaced. Also, if a tire suffers a puncture that is
larger than 5 mm (0.20 in) 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. 8 (TECHNICAL DATA).
Insure that all tires are equipped with properly in-stalled
valve caps.
Release 00 2003-02
Scarabeo 50 I.E.-50/100 4T
55