BMW R nineT 2020, Rider'S Manual, Page: 126 / 221

120 MAINTENANCE
Checking tyre tread depth
WARNING
Riding with badly worn tyres
Risk of accident due to im-
paired handling
If applicable, have the tyres
changed in good time be-
fore they wear to the min-
imum tread depth permitted
by law.
Place the motorcycle on its
stand on firm, even ground.
Measure the tyre tread depth
in the main tread grooves
with wear marks.
Wear indicators are built
into the main profile
grooves on each tyre. The tyre
is worn out when the tyre tread
has worn down to the level of
the marks. The locations of
the marks are indicated on the
edge of the tyre, e.g. by the
letters TI, TWI or by an arrow.
If the tyre tread is worn to min-
imum:
Replace tyre or tyres, as ap-
plicable.
WHEEL RIMS
Checking rims
Place the motorcycle on its
stand on firm, even ground.
Visually inspect the rims for
defects.
Have damaged rims inspec-
ted by a specialist workshop
and replaced if necessary,
preferably by an authorised
BMW Motorrad dealer.
Checking spokes
Place the motorcycle on its
stand on firm, even ground.
Use a screwdriver handle or
similar object to brush over
the spokes and pay attention
to the sequence of sounds.
If the sequence of sounds is
irregular:
Have the spokes checked
by a specialist workshop,
preferably by an authorised
BMW Motorrad Retailer.
WHEELS
Effect of wheel size on
chassis and suspension
control systems
Wheel size is very important as
a parameter for the running-
gear control systems such as
ABS, for example. In particu-
lar, the diameter and the width
of a vehicle's wheels are pro-
grammed into the control unit