Collapsible Spare Tire; Tire Tread Depth; Lockable Wheel Nuts; To Unlock A Wheel/To Lock A Wheel - Porsche 944 Driver Manual

Collapsible Spare Tire

The spare tire is stored underneath the
luggage compartment cover.
Due to tread and space saver design features
of the collapsible tire, car handling may be
affected.
Therefore, do not drive more than 50 mph
(80 km/h) when using the collapsible spare
tire. It is for emergency use and short
distances only. Remount the original road
tire as soon as possible.

Lockable Wheel Nuts

You can guard against wheel theft by installing
lockable wheel nuts on your wheels. Each kit
contains three keys and four wheel nuts with
lock sleeve. The locking mechanism is
identical for all four wheel nuts. When taking
the vehicle to your Porsche dealer or to a
workshop for wheel or tire service, remember
to leave one key with the service attendant.
In case of loss, duplicate keys cannot be
furnished by your Porsche dealer. Do not
leave these keys in the vehicle. Keep them
in a safe place.
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Inflating the collapsible tire
WARNING
Do not overinflate your spare tire.
Inflate the collapsible tire with the electric air
compressor that comes with your Porsche. Do
not use other equipment!
1. Mount spare wheel before inflating the tire.
The wheel nuts for the light alloy wheels of
the vehicle can be used to mount the spare
wheel. This applies to emergency use and
short distances only.
2. Attach hose to tire valve. Insert plug of
electric cord into cigarette lighter socket.
3. The required tire pressure is 36 psi or
2.5 bar/atm (front or rear). Check
pressure with tire pressure gauge.
4. Disconnect hose and electric cord and store
air compressor.
5. Have flat road tire repaired and remounted
on car at next service stop. Remember, the
collapsible tire is for emergency use and
short distances only.
When the air is released from the collapsible
tire, it will return to its original shape after
cooling down for several hours. Store
collapsible tire in luggage compartment.
The collapsible spare tire cannot be
repaired or mounted on the rims with
standard workshop equipment. Repair and
remounting must only be done by the tire
manufacturer.
To unlock a wheel
1. Remove protective plastic cap from wheel
nut.
2. Insert key all the way and turn left about
30°.
3. Remove lock sleeve together with inserted
key.

Tire tread depth

As required by law, the tread depth of the
collapsible tire is the same as that of the
original equipment tire. Replace a worn
collapsible spare tire in time.
If air compressor does not work
... Check if tobacco or any other foreign matter
is lodged in the cigarette lighter socket.
Remove carefully with a wooden pick. Do
not use metal object to prevent short circuit.
... Check if fuse is blown. Replace with new
equivalent fuse.
Maintenance of air compressor
The air compressor is maintenance-free. Do
not apply oil or any other lubricant.
The air filter should be cleaned periodically to
assure maximum efficiency of the unit.
To lock a wheel
1. Turn the key again approx 30° to the right
and remove.
2. Push the lock onto the wheel nut until you
can feel it latch.
3. Check whether the sleeve (of the lock) is up
against the collar of the wheel nut.
4. Generally it is not necessary to balance the
wheels after installing the lockable wheel
nuts.
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