BMW C 650 GT Rider's Manual page 112

on the performance of the sys-
8
tem.
The sensor rings are essential
110
for correct road-speed calcula-
tion, and they too must match
the vehicle's system and con-
sequently cannot be changed.
If you decide that you would
like to fit non-standard wheels
to your Maxi-Scooter, it is very
important to consult a specialist
workshop beforehand, preferably
an authorised BMW Motorrad
z dealer. In some cases, the data
programmed into the control unit
can be changed to suit the new
wheel sizes.
Effect of wheel size on
ASC
Wheel size is very important as a
parameter for the ASC running-
gear control system. In particular,
the radii of the vehicle'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.
ATTENTION
Faults of the ASC due to
changing tyre radii
ASC intervenes despite good
grip
Check both tyres for wear and
check the tyre pressures.
Always calibrate the ASC after
changing a tyre or tyres.
If ASC interventions are unex-
pectedly frequent: Re-calibrate
the ASC.
ATTENTION
Loss of the adaptation values
for the tyre radii in the Digital
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Risk of falling
Always re-calibrate the ASC
after every software update.
See the section entitled "Opera-
tion" ( 60) for information on
the calibration procedure.
RDC adhesive label
with tyre pressure control
OE
(RDC)
ATTENTION
Tyre removal not in compli-
ance with correct procedure
Damage to RDC sensors