2005 PORSCHE CAYENNE S tire size

Practical Tips, Minor Repairs
289
Example of InscriptionInscription on radial tireATire size
Example: P 255/55R18 109 Y
–P - The tire is designed for Passenger vehicle.
This information is not included on all tires.
–255 - Indication of tire width in mm
–55- Indication of tire height to tire width ratio
in percent
–R- Belt type code letter for radial–18 - Indication of rim diameter in inches
–109 - Load capacity coefficient
–Y - Speed code letter
B TIN (Tire Identification Number)
Example: DOT xx xx xxxx xxxx
–DOT
The DOT symbol indicates that the tires com-
ply with the requirements of the US Depart-
ment of Transportation and provides informa-
tion about:
– first two-digit code means manufacture’s iden-
tification mark.
– second two-digit code means tire size.
– third four-digit code means tire type code.
– fourth four-digit code means date of manufac-
ture.
If, for example, the last four numbers read
1204, the tire was produced in the 12th week
of 2004.
C Tire ply composition and material
The number of layers in the tread and sidewalls
and their material composition.
D Maximum permissible inflation pressure
The maximum permissible cold inflation pressure
to which a tire can be inflated.
fDo not exceed the permissible inflation pres-
sure.
E Maximum Load rating
The maximum load in kilograms and pounds can
be carried by the tire. If you replace tires always
use a tire that has the same maximum load rating
as the factory installed tire.
F Term of tubeless or tube tire
Identification for tubeless tires.
GRadial
The identification indicates if the tire has radial
structure.

Practical Tips, Minor Repairs
307
Spare wheel
Warning!
Risk of accident. The wheel and tire size and
the tire quality of the spare wheel and normal
wheel may differ.
If a spare wheel that differs from the normal
tires is used, this may impair the driving
behavior.
fThe spare wheel must be used only over short
distances in cases of emergency.
For safety reasons, replace the tires before
the wear indicators appear (webs in the tire
grooves, 1/16 in. (1.6 mm) high).
fNever deactivate the Porsche Stability
Management (PSM) system.
fIf the tire on the spare wheel is older than
4 years, the spare wheel should be used only
in the event of a flat.
fAvoid hard acceleration and high cornering
speeds.
The maximum permitted speed is 50 mph
(80 km/h) if the mounted spare wheel differs
from the other three wheels on the car. This
maximum speed must not be exceeded
because of altered driving characteristics and
for reasons of wear.
fDo not use a spare wheel from a different vehi-
cle type.
fDo not mount the spare wheel from your car on a different vehicle.Removing spare wheel
Warning!
Danger of injury if the spare wheel is
removed improperly.
fRemove the spare wheel only when the spare
wheel bracket is locked.
fRemove the spare wheel from the spare wheel
bracket with care. The wheel is very heavy (approx. 77 lbs. (35 kg)).
1. Unscrew all five wheel bolts.
2. Remove the top wheel bolt.
Remove assembly aid from the tool kit and
screw in instead of the wheel bolt.
Remove the remaining wheel bolts.
Fitting spare wheel
fInsert wheel bolts and tighten by hand.
Remove assembly aid and screw in remaining
wheel bolt.
Initially tighten bolts in diagonally opposite
sequence so that the wheel is centerd.
fPlease observe the chapter “TIRE PRES-
SURES, COLD” on Page 361.
fAfter mounting the wheel, tighten all five wheel
bolts to 111 ftlb. (150 Nm).

Vehicle Identification, Technical Data
359
Cayenne S Tires Wheel Rim offset Track
front/rear front/rear front rearSummer tires
255/55 R 18 109 Y XL
1)8 J x 18
2.24 in. (57 mm)
64.8 in. (1647 mm)
65.4 in. (1662 mm)
275/45 R 19 108 Y XL 9 J x 19 2.36 in. (60 mm) 64.6 in. (1641 mm) 65.2 in. (1656 mm)
275/40 R 20 106 Y XL
9 J x 20
2.36 in. (60 mm)
64.6 in. (1641 mm)
65.2 in. (1656 mm)
275/40 R 20 106 Y XL9Jx20/
10 J x 202.36 in. (60 mm)/
2,17 in. (55 mm)64.6 in. (1641 mm) 65.6 in. (1666 mm)
Winter tires
235/60 R 18 107 H XL
1)8 J x 18
2.24 in. (57 mm)
64.8 in. (1647 mm)
65.4 in. (1662 mm)
255/55 R 18 109 V XL
1)8 J x 18 2.24 in. (57 mm) 64.8 in. (1647 mm) 65.4 in. (1662 mm)
255/50 R 19 107 V XL
1)9 J x 19
2.36 in. (60 mm)
64.6 in. (1641 mm)
65.2 in. (1656 mm)
All-Season
255/55 R 18 109 V XL
1)8 J x 18
2.24 in. (57 mm)
64.8 in. (1647 mm)
65.4 in. (1662 mm)
All-Terrain
235/60 R 18 107 T XL
1)8 J x 18
2.24 in. (57 mm)
64.8 in. (1647 mm)
65.4 in. (1662 mm)
Collapsible spare wheel
195/75 18
6.5 J x 18
Cayenne and Cayenne SThe load capacity coefficient (e.g. “106”) and maximum speed code letter (e.g. “T”) for permitted top
speed are minimum requirements.
When fitting new tires or changing tires: Please observe the chapter “TIRES/WHEELS” on Page 277.Tire and rim sizes
The authorisation of tire and rim sizes is determined on the basis of extensive testing.
Your authorized Porsche dealer will be pleased to advise you about the current authorisation status.
Refitting with sizes not authorized by Porsche may have a dangerous effect on driving stability.

Vehicle Identification, Technical Data
361
Tire Pressures, ColdThese tire filling pressures apply only to the tire makes and types approved by Porsche.
Please observe the chapter “TIRES/WHEELS” on Page 277.Partially loaded Cayenne S Cayenne
Tire size Front axle Rear axle Front axle Rear axle
235/65 R 17
38 psi (2.6 bar) 43 psi (2.9 bar) 38 psi (2.6 bar) 43 psi (2.9 bar) 235/60 R 18
255/55 R 18
275/45 R 19
275/40 R 20
Collapsible spare wheel 51 psi (3.5 bar) 51 psi (3.5 bar) 51 psi (3.5 bar) 51 psi (3.5 bar)
Fully loaded Cayenne S Cayenne
Tire size Front axle Rear axle Front axle Rear axle
235/65 R 17
38 psi (2.6 bar) 50 psi (3.4 bar) 38 psi (2.6 bar) 50 psi (3.4 bar) 235/60 R 18
255/55 R 18
275/45 R 19
275/40 R 20
Collapsible spare wheel 51 psi (3.5 bar) 51 psi (3.5 bar) 51 psi (3.5 bar) 51 psi (3.5 bar)

376
Index Te s t s t a n d s
Measurement ..................................... 226
Theft protection ............................................ 16
Through-load bag ........................................ 191
Securing load ..................................... 192
Through-load facility .................................... 191
Tie-down
Belts .................................................. 186
Equipment .......................................... 197
Rings ........................................ 186
,189
Tiptronic ...................................... 15
,52,203
Rocker switches .......................... 52,205
Tire
Care .................................................. 283
Checking pressure .............................. 303
Life .................................................... 282
Traction ............................................. 280
Wear .................................................. 282
Tire and rim sizes ....................................... 359
Tire pressure ....................................... 87,198
Load .................................................. 197
Plate .................................................. 355
Reducing ................................... 304,306
Specifications ..................................... 100
Tables................................................ 361
Warning light ........................ 70
,72,110
Warning message ................................. 95
Tire pressure monitoring system .................... 87
Monitoring ............................................ 94
System learning process ....................... 89
Tire sealant .................................. 91
,98,296
Warning light ...................................... 110
Tires .......................................................... 277
Changing............................................ 174Damage ............................................. 283
Flat .................................................... 295
Inflating ..................................... 303
,305
Inscription .......................................... 289
Replacing ........................................... 284
Sidewall.............................................. 289
Size ................................................... 289
Tracks ............................................... 358
Type .................................................... 91
Valves ................................................ 284
Tool kit ....................................................... 276
Screewdriver ...................................... 291
Tools.......................................................... 276
Screwdriver ........................................ 291
Towing .............................................. 210,350
Capacity ............................................. 195
Hook .................................................. 350
Tow-starting ................................................ 210
Tracks........................................................ 358
Traction...................................................... 230
Traction systems......................................... 217
Trailer
Coupling ............................................. 194
Hitch .................................................. 194
Hitching.............................................. 194
Unhitching .......................................... 194
Transmission ..................................... 202,357
Transport ............................................ 28,238
Turn signal light .......................................... 344
Indicator light ................................. 70,72
Rear................................................... 346
Switch ................................................ 119
Turn signal pilot light
Indicator light ................................. 70,72Turn signal/high beam/headlight flasher stalk 119
Tyre pressure
Warning message..................................95
UUltrasonic measurement ..............................165
Ultrasound sensors, ParkAssist ....................163
Ultrasound sources .....................................165
Undercoating ..............................................270
Unlocking, keyless ........................................24
Immobilizer ...........................................25
Uphill driving ...............................................230
Traction..............................................230VVehicle
Battery .............................174
,320
,333
Care...................................................265
Data bank ...........................................354
Identification number ...........................354
Keys ...........................................17,334
Laying up............................................274
Lowering ............................................238
Putting into operation ..........................321
Raising ...............................................237
Recovery ............................................352
Securing against rolling .......................295
Storage ..............................................321
Transport ....................................28,238
Washing .............................................266
Vehicle door
Locking .........................................20,24
Unlocking .............................................20