BMW Motorrad R 1200 GS 2012, Rider'S Manual

Page: 109 / 168

If the tyre tread is worn to min-
imum:
Replace tyre or tyres, as applic-
able.
Checking spokes
with cross-spoked wheels
OE
Make sure the ground is level
and firm and place the motor-
cycle on its stand.
Draw the handle of a screw-
driver or a similar instrument
across the spokes and listen
to the notes of the individual
spokes.
If the notes vary:
Have the spokes checked by a
specialist workshop, preferably
an authorised BMW Motorrad
dealer.
Wheels
Tyre recommendation
For each size of tyre BMW
Motorrad tests and classifies
as roadworthy certain makes.
BMW Motorrad cannot assess
the suitability 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 im-
portant to consult a specialist
workshop beforehand, prefer-
ably an authorised BMW Motor-
rad dealer. In some cases, the
data programmed into the control
units can be changed to suit the
new wheel sizes.
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