110 Artiglio Master Code User Manual
5 - Belt. This is a non-flexible circumferential structure
comprising cross-plys at very low angles, positioned be-
low the tread, to stabilise the casing in the footprint area.
6 - Centring band. This is a small marking which indicates
the circumference of the top part of the bead and is
used as a reference to check exact tyre centring on the
rim after mounting.
7 - Protective band. This is a circumferential marking in
the area of the sidewall which is more exposed to ac-
cidental rubbing.
8 - Sidewall. This is the area between the shoulder and the
centring band. It consists of a more or less thin layer of
rubber, which protects the casing plys from lateral impact.
9 - Liner. This is a vulcanised, compound sheet, imper-
meable to air, inside tubeless tyres.
10 - Filling. This is a generally triangular rubber profile,
above the side ring; it provides rigidity for the bead and
gradually offsets the abrupt uneven thickness caused
by the side ring.
11 - Flap. This is the part of the casing ply around the
side ring and placed against the casing, to secure the
ply and prevent it from slipping.
12 - Foot. This is the innermost layer of the tread in contact
with the belt, or if the latter is not present (conventional
tyre) with the last casing ply.
13 - Shoulder. This is the outer part of the tread, between
the corner and start of the sidewall.
14 - Bead. This is the part joining the tyre to the rim. The
bead point (a) is the inner corner. The spur (b) is the
outer part of the bead. The base (c) is the area resting
against the rim. The groove (d) is the concave part against
which the rim shoulder rests.
Tube type tyres. As a tyre has to contain pressurised air
for a fairly long time, an air chamber is used. The valve
for adding air and maintaining, controlling and restoring
air pressure is part of the chamber in this case.
Tubeless tyres. Tubeless tyres consist of a tyre with inner
sidewall lined with a thin layer of special impermeable
rubber, called liner. This liner helps to maintain air pres-
sure in the casing. This kind of tyre must be mounted
7
14
6
11
2
10
4
a
c
d
e
b
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