BMW F 650 GS Rider's Manual page 44

Wheels
2
42
Securing valve caps
d
Warning:
At high road speeds, tyre
valves have a tendency to
open as a result of centrifugal
force.
Use only metal valve caps
with rubber seals. Valve caps
that are screwed on well pre-
vent air from escaping sud-
denly.
Checking tyre tread depth
d
Warning:
Comply with local legal re-
quirements concerning mini-
mum tread depth. Worn tyres
can impair handling.
• Measure tread depth at the
centre of the tyre tread
BMW's minimum tread depth
recommendation:
Front ..................2 mm (0.08 in)
Rear ...................3 mm (0.12 in)