Cautions - Porsche 911 CARRERA - 2003 Manual

Before mounting snow tires, consult with
your Porsche dealer. He has the technical
information necessary to advise you on
wheel and tire compatibility.
Snow tires should have the same load capacity 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.
A
Warning!
Tires with badly worn treads and studs are
very dangerous and could cause accidents
resulting in severe personal injuries.
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Make sure they are replaced immediately.
Do not drive a vehicle equipped with snow tires
at prolonged high speed.
Snow tires do not have the same degree of trac-
tion on dry, wet or snowfree roads as a normal
tire.
Furthermore, snow tires wear rapidly under
these conditions.
Snow tires do not fulfill their purpose if the tread
depth is less than 5/32
in (4 mm).
Comply with all state and local laws
governing snow tire and tread depth
requirements.
Snow chains
A
Caution!
Risk of damage to body, axle or brake
components.
[>
Fit snow chains only to the rear wheels, and
only with the tire/rim combination listed in the
Technical Data.
To ensure adequate clearance between chain
and body, Porsche recommends only the use
of fine-link chains such as those approved by
Porsche.
[>
Follow instructions issued by the supplier of
the chains.
Different states and countries have varying statu-
tory requirements regarding maximum speed.
Check with local authorities for possible restric-
tions.
[>
Remove chains as soon as the roads are free
of ice and snow.
Tire designations
Due to new speed and load ratings for radial
tires, new designations have come into force for
snow tires for your Porsche.
The designation to be used for ZR tires is e.g.,
255/40
ZR 17 (Z = code letter for radial tires
for speeds above 150 mph (240 km/h).
Practical Tips, Emergency Service 203