2010 PORSCHE CAYMAN brake

Practical Tips, Emergency Service
217
Danger!
Driving on worn tires can result in loss of con-
trol of the vehicle an d could cause serious
personal injuries or death.
f Do not drive with worn tires or tires showing
cuts or bruises as they may lead to sudden
deflation and loss of control which could cause
severe personal injury.
f Specialized high performance tires on high
performance sports cars exhibit more wear
than those on a family sedan, or even a high
performance sedan.
Therefore, it is important to check your tire
pressure and condition at least every two weeks.
If you notice that tires are wearing unevenly, con-
sult your Porsche dealer.
Uneven wear may not always be due to improper
wheel alignment. It can be the result of individual
driving habits such as cornering at high speeds. If
the tire pressure is not checked and adjusted
regularly, abnormal tire wear can also occur.
Tire care f Avoid damaging tires and wheel rims.
f If you must drive over a curb or other obstacle,
drive slowly and at an obtuse angle.
f Check tires for uneven wear and damage
before driving off.
f Remove imbedded material.
f Replace worn or damaged tires immediately.
f Keep oil, fuel, brake fluid, etc. away from tires.
f Replace missing valve stem caps.
f Keep tires inflated correctly.
f Wash tires when washing the vehicle. Also
clean inner side of wheels.
f Do not use abrasive cleaners when washing
the wheels.
f Check wheel rims for corrosion.
f Remove road salt, if driving in winter.
Tire damage, puncture High-pressure cleaning units can damage the
tires.
f Please see the chapter “HIGH-PRESSURE
CLEANING UNITS, STEAM CLEANERS” on
Page 203.
f Check tires for imbedded material, cuts, punc-
tures, cracks and bulges (side wall) before driv-
ing off.
In case of tire damage, where it is uncertain wheth-
er there is a break in the ply with all its conse-
quences or tire damage caused by thermal or me-
chanical overloading due to loss of pressure or
any other prior damage, we recommend that the
tire be replaced for safety reasons.
If one faulty tire is replaced it should be noted that
the difference in tread depth on one axle must not
exceed 30%.
Handling inconsistencies may result.
f Perform a visual inspection if necessary.

Practical Tips, Emergency Service
221
Snow chains
Caution!
Risk of damage to body, axle or brake com-
ponents.
f 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.
f 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.
f Remove chains as soon as the roads are free
of ice and snow. Fitting snow chains
The use of snow chains is not permitted when
5 mm spacers are mounted.
Caution!
Risk of damage to the wheel housings if the
5 mm spacers are not removed before fitting
snow chains.
f To permit the fitting of snow chains, have the 5 mm spacers removed on all 4 wheels.
f To fit/remove the spacers:
Please consult an authorized Porsche dealer.
f Please see the chapter “SPACERS” on
Page 233.
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.,
265/40 ZR 18 (Z = code letter for radial tires for
speeds above 150 mph / 240 km/h).

Practical Tips, Emergency Service
227
Changing a wheel
Warning!
Risk of serious personal injury or death. The
car may slip off the jack.
f Make sure that no one is in the vehicle when
jacking up and changing a wheel.
f Always place the car on stable supports if work
has to be carried out under the car.
Risk of damage to the brake discs of the
Porsche Ceramic Composite Brake (PCCB).
f Always screw in both assembly aids when changing a wheel.
Note
The tools required for changing a wheel (e.g. jack,
wheel bolt wrench, assembly aids) are not sup-
plied with the car.
Your authorized Porsche dealer will be pleased to
advise you.
1. Apply the handbrake fully and engage 1st gear or PDK selector-lever position P and remove
the ignition key.
2. Switch on the hazard warning lights if neces- sary.
3. Secure the car against rolling away, e.g. by
means of wedges under the wheels on the op-
posite side.
This is particularly important on slopes. 4. Slightly slacken the whee
l bolts of the wheel to
be changed.
5. Lift the car only at the specified jacking points.
6. Raise the car until the wheel lifts off the ground.
Please see the chapter “LIFTING THE VEHICLE
WITH A LIFTING PLATFORM OR GARAGE LIFT”
on Page 232.
7. Remove 1 or 2 wheel bolts (see respective illustration).
8. Screw in assembly aids instead of the wheel bolts.
Screw in assembly aid for cars without Porsche Ceramic
Composite Brake9. Remove the remaining wheel bolts.
Note on operation
f To remove or mount the spacers:
Please see the chapter “SPACERS” on
Page 233.

228
Practical Tips, Emergency Service
Screw in two assembly aids for cars with Porsche
Ceramic Composite Brake10.Take the wheel off and put a new wheel on.
Please see the chapter “WHEEL BOLTS” on
Page 226.
11.Insert wheel bolts and tighten by hand.
12.Remove assembly aids, screw in remaining wheel bolts.
Initially tighten bolts only slightly in diagonally
opposite sequence so that the wheel
is centred.
13.Inflate the tire if necessary. Please see the chapter “TIRE PRESSURE FOR
COLD TIRES (68 °F/ 20 °C)” on Page 267.
14.Lower the car fully and remove the jack.
15.Tighten wheel bolts in diagonally opposite sequence.
f Immediately after changing a wheel, use
a torque wrench to check the prescribed
tightening torque (96 ftlb./130 Nm).
Note on operation for vehicles with
Tire Pressure Monitoring
f On vehicles with Tire Pressure Monitoring, the
settings on the on-board computer must be
updated after the wheel change.
f Please see the chapter “TIRE PRESSURE FOR
COLD TIRES (68 °F/ 20 °C)” on Page 267.
Checking tire pressure with a
pressure gage1. Remove the valve stem cap from the tire.
2. Press the pressure gage onto the valve stem.
Note on operation
fDo not press too hard or force the valve stem
sideways, or air will escape.
If the sound of air escaping from the tire is
heard, reposition the pressure gage.
3. Read the tire pressure on the gage stem and compare it to the permissble tire pressure.
This information can be found on the tire pres-
sure plate or in the chapter Technical Data.
Please see the chapter “TIRE PRESSURE FOR
COLD TIRES (68 °F/ 20 °C)” on Page 267.
4. Remove the pressure gage.
f Please see the chapter “TPM TIRE PRESSURE
MONITORING” on Page 151.

Practical Tips, Emergency Service
229
Flat Tire
Warning!
Failure to follow these instructions may result
in serious personal injury to you or to by-
standers.
f If you have a flat tire, move a safe distance off
the road. Turn the emergency flasher on and
use other warning devices to alert other motor-
ists. Set the parking brake.
f Do not park your vehicl e where it may contact
dry grass, brush or other flammable materials.
The hot parts of the exhaust system could set
such materials on fire, thereby causing both
property damage and serious personal injury or death.
A tire sealant and compressor with pressure
tester are located in the luggage compartment.
f Please observe the safety and operating in-
structions on the special sealant bottle with a
special Porsche part number and on the com-
pressor – these are essential. Important note
Sealing the tire with the tire repair kit is only
an emergency repair. Even with the tire air-
tight, it may be used only for short journeys
in an emergency.
The maximum permitted speed is 50 mph
(80 km/h).
f
Do not use commercially available sealant or
tire inflating bottles.
Use only the tire sealant located in the luggage
compartment.
Warning!
Risk of accident, resulting in serious
personal injury or death.
f Have tires replaced by a specialist workshop
as soon as possible.
f Avoid hard acceleration and high cornering speeds.

Practical Tips, Emergency Service
233
SpacersfUse the spacers only together with wheels and
fastening parts approved by Porsche.
Before having spacers fitted, find out about the
current approval status.
Mounting an emergency spare wheel
If 5 mm spacers are mounted, these must not be
removed to mount an emergency spare wheel.
Fitting snow chains
The use of snow chains is not permitted when
5 mm spacers are mounted.
Caution!
Risk of damage to the wheel housings if the
5 mm spacers are not removed before fitting
snow chains.
f To permit the fitting of snow chains, have the 5 mm spacers removed on all 4 wheels.Note on operation
f
To fit/remove the spacers:
Please consult an authorized Porsche dealer.
f Please see the chapter “CHANGING A WHEEL”
on Page 227.
Removing the spacers
1. Unscrew both countersunk screws (M6x16) on the wheel hub.
2. Remove the spacer.
3. Fasten the brake disc with the short M6x12
countersunk screws, part No.:
900.269.047.09.
Tightening torque 7.5 ftlb. (10 Nm) .
4. For wheel mounting without a spacer, 5 mm
shorter wheel bolts (part No.:
997.361.203.01 ) must be used.
Tightening torque: 96 ftlb. (130 Nm) .

256
Practical Tips, Emergency Service
3. Remove side marker and undo bulb holder
(bayonet lock).
4. Remove the bulb from the holder and replace it. Insert holder.
Check operation of the light.
5. Insert the side marker’s retaining lugs A into
the side section at the front.
Push in side marker until the securing spring B
is felt to engage.
6. Press the cap into the wheel housing liner.
Number Plate LightChanging bulb1. Unscrew both screws A and take off the light
lens.
2. Remove defective bulb from between the contact springs and replace.
3. Reassemble in reverse order. Check operation of the light.
Changing Light-Emitting Diodes
and Long-Life BulbsThe following lights are equipped with light-
emitting diodes (LEDs) or long-life bulbs and
cannot be replaced individually. Replacement also
involves a greater amount of installation work.
– Side light, front,
– Daytime driving lights on vehicles with Bi-Xenon headlights,
– Tail lights and
– Additional brake lights
f Have the defective light replaced at an autho-
rized Porsche dealer.

Practical Tips, Emergency Service
261
Pulling vehicle onto flat bed 1. Position wooden ramps at the base of the flat bed to reduce the angle of the pull.
2. Reel in the hoist cable and check the underside of the vehicle for any interference.
Tieing down vehicle on flat bed 1. Carefully feed towing straps through the open-ing in the rear wheels .
Make sure metal parts of straps do not dam-
age rim.
Make sure the strap is flat over the rim bead.
Make sure brake backing plate is not dam-
aged.
2. Secure straps to rear of flat bed.
3. Reel in hoist cable only far enough to tension
tie-down straps. 4. Carefully feed towing
straps through the open-
ing in the front wheels .
Make sure metal parts of straps do not dam-
age rim.
Make sure the strap is flat over the rim bead.
Make sure brake backing plate is not dam-
aged.
5. Secure straps to front of flat bed.
6. Release tension on hoist cable, but do not dis- connect.
Use hoist cable as a safety cable.