Porsche 928 GT1991, Owner'S Manual

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Collapsible spare tire
The spare tire is stored underneath the lug-
gage compartment cover. It is covered by a
lid with a quick release catch. The car jack,
the electric air compressor kit and the tire
pressure tester are stored inside the wheel
rim. This kit also includes a plastic cover for
the road wheel to keep luggage compart-
ment or car interior clean.
Due to tread and space saver design fea-
tures of the collapsible tire, car handling may
be affected.
Therefore, do not drive more than 50
mph/ 80 km/h with moderate accelera-
tion when using the collapsible spare tire.
It is for emergency use and short dis-
tances only. Fitting the spare wheel at the
front improves handling of the car and re-
duces wear on the tires. Only one collap-
sible spare tire may be fitted to the car.
Remount the original road tire as soon as
possible.
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.
2. Attach hose of air compressor to tire
valve and insert plug of electric cord into
cigarette lighter socket.
3. The required tire pressure is 36 psi or
2.5 bar. Check pressure with tire pres-
sure gauge.
4. Disconnect hose and electric cord and
store air compressor.
5. Have flat road tire repaired and remount-
ed on car at next service stop. Remem-
ber, 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 collap-
sible tire in the luggage compartment.
The collapsible spare tire cannot be re-
paired or mounted with standard work-
shop equipment. Repair and remounting
must only be done by the tire manufac-
turer.
Tire tread depth
As required by law, the tread depth of the col-
lapsible 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.
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