Effect Of Wheel Size On Chassis And Suspension Control Systems; Removing Front Wheel - BMW F 750 GS Rider's Manual

Effect of wheel size on
chassis and suspension
control systems
Wheel size is very important as
a parameter for the suspension
control systems. In particular,
the diameter and the width
of a vehicle's wheels are pro-
grammed into the control unit
and are fundamental to all cal-
culations. 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 important to con-
sult a specialist workshop
beforehand, preferably an
authorised BMW Motorrad
retailer. In some cases, the
data programmed into the
control units can be changed to
suit the new wheel sizes.

Removing front wheel

Make sure the ground is level
and firm and place the motor-
cycle on its stand.
Remove screw 1 and remove
the wheel speed sensor from
its bore.
Disengage the cable for the
wheel speed sensor from
holding clips 2 and 3.
Remove mounting bolts 4
from the left and right brake
calipers.
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