Tyre Inflation Pressures; Tyre Wear - Triumph Thunderbird Commander Handbook

Warning
Inner tubes must only be used on
motorcycles fitted with spoked wheels and
with tyres marked 'TUBE TYPE'.
Some brands of approved tyres marked
'TUBELESS' may be suitable for use with
an inner tube. Where this is the case, the
tyre wall will be marked with text
permitting the fitment of an inner tube (see
illustration below).
Use of an inner tube with a tyre marked
'TUBELESS', and NOT marked as suitable
for use with an inner tube, or use of an
inner tube on an alloy wheel marked
'SUITABLE FOR TUBELESS TYRES' will
cause deflation of the tyre resulting in loss
of motorcycle control and an accident.
Typical Tyre Marking -
Tubeless Tyre Suitable For Use
With An Inner Tube
Maintenance and Adjustment

Tyre Inflation Pressures

Correct inflation
maximum stability, rider comfort and tyre life.
Always check tyre pressures before riding
when the tyres are cold. Check tyre pressures
daily and adjust if necessary. See the
Specification section for details of the correct
inflation pressures.
Warning
Incorrect tyre inflation will cause abnormal
tread wear and instability problems that
may lead to loss of control and an accident.
Under-inflation may result in the tyre
slipping on, or coming off the rim. Over-
inflation will cause
accelerated tread wear.
Both conditions are dangerous as they may
cause loss of control leading to an accident.

Tyre Wear

As the tyre tread wears down, the tyre
becomes more susceptible to punctures and
failure. It is estimated that 90% of all tyre
problems occur during the last 10% of tread
life (90% worn).
recommended to use tyres until they are
worn to their minimum.
pressure will provide
instability and
It is therefore not
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