Wheels - BMW F 800 GT Rider's Manual

Make sure the ground is level
8
and firm and place the motor-
cycle on its stand.
84
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
z
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 applic-
able.

Wheels

Tyre recommendation
For each size of tyre
BMW Motorrad tests certain
makes, and approves those
that it certifies as roadworthy. If
BMW Motorrad has not approved
the wheels and tyres, it cannot
assess their suitability or provide
any guarantee of road safety.
Use only wheels and tyres ap-
proved by BMW Motorrad for
your type of motorcycle.
You can obtain detailed
information from your authorised
BMW Motorrad dealer or on
the Internet at www.bmw-
motorrad.com.
Effect of wheel size on
ABS
The wheel size has a large in-
fluence on the functionality of
the ABS system. In particular,
the diameter and the width of a
vehicle's wheels are programmed
into the control unit and are fun-
damental to all calculations. Any
change in these influencing vari-
ables, caused for example by a
switch to non-standard installed
wheels, 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, preferably
an authorised BMW Motorrad
dealer. In some cases, the data
programmed into the control
units can be changed to suit the
new wheel sizes.