Tyre Wear/Wheel Inspection
Warning - Tyre Safety Fragment
Tyre Wear
As the tyre tread wears down, the tyre becomes more susceptible to puncture and failure. It is estimated that 90% of all tyre failures occur during the last 10% of tread life (90% worn). It is false economy and unsafe to use tyres until they are worn to their minimum.
All tyres are fitted with tread wear indicators. When the tyre becomes worn down as far as the top of a tread wear indicator, the tyre is worn beyond its service life and must be replaced.
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Attention must also be paid to the legal limits for tread wear, which differ from country to country. Tyres that have worn to the legal limit in the country or region in which the motorcycle is operated must be replaced, even if tread wear has not yet reached the level of the tread wear indicators.
In accordance with the scheduled maintenance chart, measure the depth of the tread with a depth gauge, and replace any tyre that has worn to, or beyond the minimum allowable tread depth.
Mud and Snow/Dual Purpose Tyres (if fitted)
The use of mud and snow/dual purpose tyres may result in reduced motorcycle stability. If the stability or handling characteristics of the motorcycle (with the mud and snow/dual purpose tyres fitted) begins to change adversely, then check the tyre tread depth. It is recommended that mud and snow/dual purpose tyres are replaced earlier than normal tyres and before they are worn near to the minimum allowable tread depth, see https://www.triumphmotorcycles.co.uk/owners/your-triumph#tyres.
Wheel Inspection
Inspect wheels for cracks, splits and kerb damage. Always replace wheels that are suspected of having become damaged.