BMW F 650 GS Manual page 44

Wheels
2
42
Securing valve caps
At high road speeds, tire
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 tire tread depth
Comply with local legal re-
quirements concerning mini-
mum tread depth. Worn tires
can impair handling.
• Measure tread depth at the
center of the tire tread
BMW's minimum tread depth
recommendation:
Front ................. 2 mm(0.08 in)
Rear .................. 3 mm(0.12 in)