Porsche 92854 Owner's Manual page 82

Wheels
If you intend to use other than original equip-
ment wheels, be sure that they conform to
Porsche specifications for your model.
Check with your Porsche dealer regarding the
correct wheel specifications for type and mo-
del year.
Removing and storing tires
The driving direction should be clearly marked
on all tires before removing them for storage.
This is to make sure that they are mounted
and run in the s a m e direction as before. When
remounting, p u t tires with the most tread depth
at the front. Have tires/wheels balanced as
soon as possible.
The supposition that tires become long wear-
ing due to storage and age is unfounded.
Chemical additives, which make the rubber
elastic, loose their effectiveness in the course
of time and the rubber perishes. Therefore,
the tires, especially the collapsible spare tire,
should from time to time undergo a visual
check. F o r this, p u m p up the collapsible spare
tire.
Under no circumstances should tires be
older than 6 years.
The age of the tire can be seen from the "DOT"
code number. If, for example, the last three
numbers read 1 2 5 , this m e a n s it w a s produced
in the 12th week of 1985.
Store tires in a cool and dry place.
Snow tires
For a better grip on snow and ice use radial
M+S tires or snow tires with studs. Check
with your local Motor Vehicle Bureau for pos-
sible restrictions.
Radial ply M+S tires should be inflated with
the same cold tire inflation pressures required
for the regular radial ply tires. However, do
not exceed the maximum tire inflation pres-
sure listed on the tire sidewalk
S n o w tires should h a v e the s a m e l o a d capac-
ity as original equipment tires and should be
mounted on all four wheels. Snow tires with
studs should be run at moderate speeds when
new in order to give the studs time to settle.
If tires are fitted already mounted on their rims,
the direction of rotation and position with re-
spect to the wheel hub should be marked
before the wheels are removed (e.g. by mak-
ing a clear m a r k on the stud nearest the valve).
This precaution ensures that the wheels will
be remounted in the same position, thus ob-
viating the risk of imbalance.
WARNING
Tires with b a d l y w o r n treads a n d studs are
very dangerous. Make sure they are re-
placed immediately.
Do not drive a vehicle equipped with snow
tires at prolonged high speed. Snow tires do
not have the same degree of traction on dry,
wet or snow free roads as a normal tire. Further-
more, snow tires wear rapidly under these
conditions.
Snow tires do not fulfill their purpose if the
5
tread depth is less than / 3 2 in/4 mm. Comply
with all state and local laws governing s n o w
tire and tread depth requirements.
Snow chains
Should snow chains be necessary, they
must be mounted on the drive wheels only.
Check with local authorities for possible re-
strictions.
Use only snow chains with fine pitch links,
so that enough space remains between the
chains and the inside of the wheel arches.
Drive wheels must rotate freely with chains
mounted to prevent damage to body, axle or
brake components. Follow instructions issued
by the supplier of the chains. Remove chains
as soon as roads are free of ice and snow.
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