BMW R 1200 S Rider's Manual page 65

At high road speeds, tire
valves have a tendency
to open as a result of centrifu-
gal force.
To avoid a sudden loss of tire
pressure, use a metal valve
cap with rubber sealing ring
on the rear wheel and tighten
it securely.
Incorrect tire pressure
reduces the life of the
tires.
Ensure proper tire pressure.
Check the tire pressure us-
ing the following data.
Front tire pressure
31.9 psi (2.2 bar) (Single
rider, with cold tire)
36.3 psi (2.5 bar) (Driver
with passenger and/or
load, with cold tire)
Rear tire pressure
36.3 psi (2.5 bar) (Single
rider, with cold tire)
42.1 psi (2.9 bar) (Driver
with passenger and/or
load, with cold tire)
In case of insufficient tire
pressure:
Correct tire pressure.
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