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Some tire pressure tables only show the rim diam-
eter instead of the complete tire size, e.g. R18.
The rim diameter is part of the tire size and can
be found on the tire side wall (
page 345).
/
Tire and Loading Information placard
R
(
page 337)
/
Maximum tire pressure (
page 344)
/
R
Checking the tire pressure manually
Read the tire pressure recommended for the
#
current operating conditions from the tire and
loading information placard or the tire pres-
sure table. Observe the notes on tire pressure.
Remove the valve cap of the tire to be
#
checked.
Press the tire pressure gauge securely onto
#
the valve.
Read the tire pressure.
#
If the tire pressure is lower than the recom-
#
mended value, increase the tire pressure to
the recommended value.
If the tire pressure is higher than the recom-
#
mended value, release air. To do so, press
down the metal pin in the valve, e.g. using the
tip of a pen. Then check the tire pressure
again using the tire pressure gauge.
Screw the valve cap onto the valve.
#
Further related subjects:
Notes on tire pressure (
page 332)
/
R
Tire pressure table (
page 334)
/
R
Tire and loading information placard
R
(
page 337)
/
Tire pressure monitoring system
Function of the tire pressure monitoring system
& DANGER Risk of accident due to incorrect
tire pressure
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recommen-
ded by the vehicle manufacturer on the vehi-
cle placard or tire inflation pressure label. (If
Wheels and tires 335
your vehicle has tires of a different size than
the size indicated on the vehicle placard or
tire inflation pressure label, you should deter-
mine the proper tire inflation pressure for
those tires.)
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pres-
sure telltale when one or more of your tires is
significantly under-inflated. Accordingly, when
the low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper pres-
sure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead
to tire failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect
the vehicle's handling and stopping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driv-
er's responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
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