snow chains PORSCHE CAYMAN 2006 1.G Owners Manual

Controls, Instruments
63
Examples of PSM control operations
– If the “front wheels of the vehicle drift” on a
bend, the rear wheel on the inside of the bend
is braked and the engine power is reduced if
necessary.
– If the rear of the vehicle swings out on a bend,
the front wheel on the outside of the bend is
braked.
PSM should always be switched on during
“normal” driving.
However, it may be advantageous to switch off
PSM temporarily in exceptional situations, for
example:
– On a loose surface or in deep snow,
– When “rocking the vehicle free”, or
– When using snow chains.
Switching off PSMfPress the PSM OFF button.
PSM is switched off after a short delay.
The light-emitting diode in the button is illumi-
nated.
When the PSM is switched off, the multifunc-
tional PSM light on the instrument panel is lit
and a message is shown by the on-board
computer.
An acoustic signal also sounds.The following functions stabilize the vehicle in
emergency situations, even with PSM switched
off:
– When PSM is off, the vehicle is stabilized as
soon as one of the two front wheels enters the
ABS control range.
– When PSM is off and Sport mode is on, the
vehicle is stabilized as soon as both front
wheels enter the ABS control range.
One-sided spinning of the wheels is reduced,
even with PSM switched off, to enable optimum
traction on all drive wheels.
Switching PSM back onfPress PSM OFF button.
PSM is switched on after a short delay.
The light-emitting diode in the button and the
multifunctional PSM light go out.
The on-board computer shows a message.

218
Practical Tips, Emergency Service
Snow chains
Caution!
Risk of damage to body, axle or brake com-
ponents.
fFit 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.
fFollow 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. 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.
fTo permit the fitting of snow chains, have the 5 mm spacers removed on all 4 wheels.
fTo fit/remove the spacers:
Please consult an authorized Porsche dealer.
fPlease observe the chapter “SPACERS” on
Page 230.
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).

230
Practical Tips, Emergency Service
SpacersfUse the spacers only together with wheels and
fastening parts approved by Porsche.
Before having spacers fitted, find out about the
current authorization status.
Mounting an emergency spare wheel
If 5 mm spacers are fitted, 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 wheel housings if the
5 mm spacers are not removed before fitting
snow chains.
fIn order to enable the fitting of snow chains,
have the 5 mm spacers removed on all 4wheels.Note on operation
fTo fit/remove the spacers:
Please consult an authorized Porsche dealer.
Removing the spacersfPlease observe the chapter “CHANGING A
WHEEL” on Page 228.
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 10 Nm (7.5 ftlb.).
4. For wheel mounting without a spacer, 5 mm
shorter wheel bolts (part No:
996.361.203.02) must be used.
Tightening torque 130 Nm (96 ftlb.).Required scope of parts if the spacers are
removed
Short countersunk screws (M6x12)
Part No: 900.269.047.09
1 set of short wheel bolts
Part No: 996.361.203.02
Short anti-theft protection devices
Part No: 996.361.057.01

268
Vehicle Identification, Technical Data
Tires, Rims, Tracks
Danger!
Installation of sizes not authorized by
Porsche may have a dangerous effect on
the driving stability and could result in
severe personal injury or death.
fBefore mounting new tires, check with yourPorsche dealer about the current release status. Tire Rim Rim offset Track
Summer tires
front 235/40 ZR 18 91Y 8 J x 18 H2
57 mm 58.5 in./1486 mm
rear 265/40 ZR 18 101Y XL9 J x 18 H2
43 mm 60.2 in./1528 mm
or front 235/35 ZR 19 87Y8 J x 19 H2
57 mm 58.5 in./1486 mm
rear 265/35 ZR 19 94Y9.5 J x 19 H2
46 mm 60.0 in./1522 mm
Snow tiresfront 235/40 R 18 91V M+S8 J x 18 H2
57 mm 58.5 in./1486 mm
rear * 255/40 R 18 95V M+S9 J x 18 H2
43 mm 60.2 in./1528 mm
The load capacity coefficient (e.g. “91”) and maximum speed code letter (e.g. “V”) are minimum requirements.
Please observe the chapter “TIRES/WHEELS” on Page 207.
Tire and rim sizes
Extensive tests are performed before specific tires and wheels are approved by Porsche. Your Porsche dealer has information
about approved tires and wheels and is happy to assist you. If aftermarket tires and/or wheels are installed which are not
approved by Porsche, the vehicle’s roadability and handling characteristics might be impaired. Since Porsche has no data on
such combinations, Porsche cannot stand behind the safety or durability of these aftermarket combinations.
* Snow chains Can be mounted only on the rear wheels; maximum speed 30 mph/50 km/h.
Use only Porsche authorized fine-link cross-type or edge chains.
Snow chain clearance can be guaranteed only with the tire + rim combination marked.

Index
279
Rear fog light .....................................122
, 256
Rear lid ...................................................... 150
Rear view mirrors ......................................... 29
Rear window defogger.................................. 31
Rear wiper ................................................. 127
Replacing ........................................... 175
Relays ........................................................ 232
Release button ........................................... 165
Remote control ............................................. 18
Replacement key .......................................... 17
Replacing bulbs .......................................... 245
Replacing wiper blades................................ 173
Retractable rear spoiler ................................. 66
Rims
Diameter ............................................ 220
Rim width ........................................... 220
Roof load ................................................... 162
Roof Transport System........................162, 272
Running in .................................................... 14
SSafety belts ..........................................40
, 202
Warning light ........................................ 41
Safety compliance sticker ........................... 264
Sealing set ................................................. 225
Seals, care of ............................................. 200
Seat ............................................................ 32
Adjustment ........................................... 32
Heating ................................................ 36
Memory ............................................... 34
Selector lever ............................................. 165
Selector lever position indicator .............87, 167
Service flap ................................................ 151
Shifting gear............................................... 164Shiftlock .....................................................165
Side lights ..................................................256
Side marker light ............................... 122
, 253
Side storage compartments ........................144
Side vents ..................................................136
Snow chains .............................. 218
, 268
, 269
Snow tires ......................................... 217, 268
Sockets .....................................................140
Spacers .....................................................230
Spare key .....................................................17
Spare wheel ...............................................269
Speed code letter .......................................219
Speed control .............................. 82
, 129
, 130
Speed limit .......................................... 94, 219
Speedometer................................................84
Spoiler .........................................................66
Sport mode ..................................... 61
, 64, 65
Sports seat ..................................................32
Stability management system (PSM) ...............62
Starting ................................................. 74, 75
Starting and stopping the engine ....................74
Steering wheel
Adjustment ...........................................37
Buttons ................................................38
Lock ................................. 74
, 75, 76, 77
Rocker switches..................................165
Toggle switches ..................................165
Stopwatch ....................................................98
Storage options ..........................................141
Storing your Porsche..................................203
Sun visors ....................................................39
TTachometer ..................................................85Tail light ..................................................... 255
Tank .................................................. 186
, 187
Cap ................................................... 187
Ventilation system.............................. 191
Telephone .................................................. 157
Temperature setting........................... 130, 133
Temperature, outside indicator ...................... 89
Test stand, measurements ............................ 64
Theft protection ........................................... 16
Tie-down rings ........................................... 151
Tiptronic .................................................... 165
Indicator .............................................. 87
Tire filling compressor ................................ 149
Tire pressure monitoring ............................. 103
Tires ........................................... 14
, 207
, 268
Checking pressure............................. 227
Inscription .......................................... 219
Loading information ............................ 221
Pressure................................ 5
, 210
, 269
Pressure plate.................................... 265
Sealant .............................................. 225
Sidewall ............................................. 219
Size .................................................. 219
Tires and tire care ...................................... 207
Tools ......................................................... 149
Towing .............................................. 260, 261
TPC Tire pressure monitoring ...................... 103
Track ........................................................ 268
Transmission ............................. 163
, 164
, 267
Fluid .......................................... 194, 271
Trunk entrapment ....................................... 146
Turn signals ......................................... 85, 124

280UUndercoating ............................. 190
, 199
, 200
VValves ........................................................ 215
Vanity mirror................................................. 39
Vehicle
Care .................................................. 195
Data bank........................................... 264
Identifikation number ........................... 264
Laying up the car................................ 237
Putting into operation .......................... 238
Washing ............................................. 195
Ventilation .................................................. 133
Vents .................................................130
, 133
Viscosity, engine oil.................................... 180
WWarning messages ..................................... 114
Washer fluid .......................................192
, 271
Washer lever .............................................. 125
Washing ..................................................... 195
Weights...................................................... 272
Welcome Home Function............................. 123
Wheel ....................................... 201
, 207
, 268
Bolts ............................................17, 227
Changing............................................ 228
Checking pressure..........................5, 227
Inscription .......................................... 219
Loading information............................ 221
Pressure plate .................................... 265
Sidewall ............................................. 219Size ................................................... 219
Tire pressure ................................. 5
, 210
Tire sealant ........................................ 225
Windows ....................................... 23
, 26, 199
Washer nozzles................................... 125
Washer system .......................... 192, 271
Windshield wipers .............................. 125, 173
Replacing ........................................... 173
Winter driving
Battery ............................................... 236
Jump lead starting.............................. 242
Winter operation
Coolant .............................................. 176
Seals ................................................. 200
Snow chains ....................................... 218
Tires .................................................. 217
Washer fluid........................................ 192
Wiper blades....................................... 173