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 minim-
um:
Replace tyre or tyres, as applic-
able.
Rims
Visual inspection
Make sure the ground is level
and firm and place the motor-
cycle on its stand.
Visually inspect the rims for
defects.
Have damaged rims checked
and, if necessary, replaced by a
specialist workshop, preferably
an authorised BMW Motorrad
dealer.
Wheels
Tyre recommendation
For each size of tyre BMW Mo-
torrad tests and classifies as
roadworthy certain makes. BMW
Motorrad cannot assess the suit-
ability or provide any guarantee
of road safety for other tyres.
BMW Motorrad recommends
using only tyres tested by BMW
Motorrad.
You can obtain detailed informa-
tion from your authorised BMW
Motorrad dealer or on the Inter-
net at www.bmw-motorrad.com.
Effect of wheel size
on suspension-control
systems
Wheel size is very important as
a parameter for the suspension-
control systems ABS and ASC.
In particular, the diameter and the
width of a motorcycle's wheels
are programmed into the control
unit and are fundamental to all
calculations. Any change in these
influencing variables, caused for
example by a switch to wheels
other than those installed ex-
works, can have serious effects
on the performance of the con-
trol systems.
The sensor rings are essential
for correct road-speed calcula-
tion, and they too must match
the motorcycle's control sys-
tems and consequently cannot
be changed.
If you decide that you would like
to fit non-standard wheels to
your motorcycle, it is very import-
ant to consult a specialist work-
shop beforehand, preferably an
authorised BMW Motorrad deal-
er. In some cases, the data pro-
grammed into the control units
can be changed to suit the new
wheel sizes.
8
103
z
Maintenance
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