Ducati 999R Anleitung- Und Instandhaltungsheft Seite 168

Minimum tread depth
Measure tread depth (S, fig. 77) at the point where tread
is most worn down.
It should not be less than 2 mm and anyway not below the
legal limit.
Important
Visually inspect the tyres at regular intervals for
detecting cracks and cuts, especially on the side walls,
E
bulges or large spots that are indicative of internal damage.
Replace them if badly damaged.
Remove any stones or other foreign bodies caught in the
tread.
fig. 77
75