Ducati SPORT TOURING ST3 Manuel D'utilisation Et Entretien page 105

Carrying the maximum load allowed
Your motorcycle is designed for long-distance riding,
carrying the maximum load allowed in full safety and
comfort.
Even weight distribution is critical to preserving these
safety features and avoiding trouble when performing
sudden manoeuvres or riding on bumpy roads.
Important
When the side panniers are fitted, it is
E
recommended to never exceed 120 Km/h.
Further reduce speed if tyres are worn down and when
riding on poor road surface or with poor visibility.
8
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Information about carrying capacity
The total weight of the motorcycle in running order
including rider, pillion passenger, luggage and additional
accessories should not exceed 420 Kg.
The weight of luggage alone should never exceed 23 Kg
divided as follows (fig. 1):
max 9 kg for each side pannier;
max 5 kg for tank bag.
fig. 1