235/60 R 18 107T/H 15

8 J x 18 H2, RO 57

T = all-terrain
H = winter
17-mm spacers permitted on rear axle only for
wheels with Part No. 955.362.136.10.9A1 16

255/55 R 18 109V/Y 15

8 J x 18 H2, RO 57

V = all-season, winter
Y = summer

255/55 R 18 109V/Y 15

8 J x 18 H2, RO 57

V = all-season, winter
Y = summer
17-mm spacers permitted on rear axle only for
wheels with Part Nos. 955.362.136.10.9A1
and 7L5.601.025.A 16

255/50 R 19 107V

9 J x 19 H2, RO 60

Only winter tires
Snow chains can only be installed on rear axle

9 J x 19 H2, RO 60

V = all-season18
Snow chains can only be installed on rear axle
Y = summer15
Snow chains cannot be installed

275/45 R 19 108V/Y

9 J x 19 H2, RO 60

V = all-season18
Y = summer15
17-mm spacer per wheel permitted on rear
axle 16

275/40 R 20 106V/Y

9 J x 20 H2, RO 60

V = winter
Y = summer,
snow chains cannot be installed

275/40 R 20 106V/Y

9 J x 20 H2, RO 60

V = winter
Y = summer,
17-mm spacer per wheel permitted on rear
axle 16 ,
snow chains cannot be installed

275/40 R 20 106V/Y

10 J x 20 H2, RO
5517

V = winter
Y = summer,
snow chains cannot be installed

275/45 R 19 108V/Y

14

Not for Cayenne S, Cayenne Turbo, Cayenne Turbo S.

15

Not for Cayenne Turbo with engine power kit "E81", Cayenne Turbo S.

16

Spacers must be removed in order to install emergency spare wheel or snow chains.

17

Only permitted on rear axle.

18

Not for Cayenne Turbo, Cayenne Turbo with engine power kit "E81", Cayenne Turbo S.

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WARNING
Wheel electronics units not detected, incorrectly secured or loose on vehicles without Tire Pressure
Monitoring (TPM)
•

Risk of damage to wheels and/or tires

•

Uncontrollable vehicle handling



Do not mount wheels with wheel electronics units on vehicles without TPM.

Wheels:

Overview of Porsche wheels for all-terrain, all-season and summer tires
Identification on the inside/outside of the wheel disc:
wheel size, rim offset (RO) in mm, order and part number, and Porsche logo
(the order number is not shown on the part).

7.5 J x 17 H2, RO 53
Part Nos.
955.362.126.00 9A1 and
7L5.601.025.P

17-inch Cayenne wheel

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8 J x 18 H2, RO 57
Part Nos.
955.362.136.10 9A1 and
7L5.601.025.A

18-inch Cayenne S wheel

8 J x 18 H2, RO 57
Part Nos.
955.362.136.30 9A1 and
7L5.601.025.C

18-inch Turbo wheel

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9 J x 19 H2, RO 60
Part Nos.
955.362.138.20 9A1 and
7L5.601.025.B

19-inch Design wheel

9 J x 20 H2, RO 60
Part Nos.
955.362.140.50 9A1 19 and
7L5.601.025.E19
955.362.140.80 9A1 and
7L5.601.025.N

20-inch Sport Design wheel

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9 J x 20 H2, RO 60
Part Nos.
955.362.140.60 9A1 19 and
7L5.601.025.F 19
(only permitted on vehicles with 18-inch brake
system)
955.362.140.91 9A1 and
7L5.601.025.CH

20-inch Sport Techno wheel

Front: 9 J x 20 H2, RO 60
Part Nos.
955.362.140.60 9A1 19 and
7L5.601.025.F 19
(only permitted on vehicles with 18-inch brake
system)
955.362.140.91 9A1 and
7L5.601.025.CH
Rear: 10 J x 20 H2, RO 55
Part Nos.
955.362.142.009A1 and
7L5.601.025.Q
20-inch Sport Techno wheel
19

Not for Cayenne Turbo with engine power kit "E81", Cayenne Turbo S

Information
Improper handling can damage the wheel surface.
Carry out tire removal and mounting using a bead holding-down device only.
Use a leather pad on the rim flange to support the valve insertion tool.
Only use the Porsche centering clamping set for balancing.
Do not use brushes to clean the wheels because brushes can cause deep scratches that cannot be
removed by polishing.
Never use solvents or other chemical substances on tires.

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WARNING
Incorrectly installed snow chains
•

Uncontrollable vehicle handling



Do not exceed the maximum speed of Speed 30 mph/50 km/h.



Observe installation instructions from the chain manufacturer.

Snow Chains:

The best possible handling characteristics are achieved when snow chains are installed on all four wheels
of the vehicle. However, it is also possible to install snow chains on only one axle (preferably the rear
axle).
Porsche offers the following snow chains as accessories:
Tire size

Porsche part no.

Type of snow chain

235/65 R 17

955.044.600.07

Link-type chain, 5.0 mm

235/60 R 18

955.044.600.07

Link-type chain, 3.5 mm

255/55 R 18

955.044.600.08

Link-type chain, 3.5 mm

255/50 R 19

955.044.600.08 20

Link-type chain, 3.5 mm

275/45 R 19

955.044.600.08 20

Link-type chain, 3.5 mm

20

Wheel
Mounting:

Only permitted on rear axle.

Tightening torque 160 Nm (118 ftlb.)

Removing/inst- Before installing or removing a wheel, screw the assembly aids (threaded bolts for installing wheel, Part
alling:
No. 999.571.074.30) into the wheel hub instead of the two wheel bolts. Only then should you remove the
three remaining wheel bolts and remove the wheel carefully, without touching the brake discs.
The wheels are secured with standard wheel bolts (M14 x 1.5 x 51), Part No. 955.361.203.01. Never
grease the wheel bolts. Only "Original Cayenne wheel bolts" may be used!
Install wheel bolts and tighten evenly in diagonally opposite sequence. Start at the top when tightening.
Information
The relevant legal regulations must be observed in the export countries!
Wheel Storage: •
•
•
•

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Tires must be stored in a cool, dry and dark room with adequate ventilation.
Tires must never come into contact with fuel, oil, grease or chemicals.
Do not store summer tires in storage areas with ambient temperatures of less than 5° F (-15° C).
Complete wheel & tire assemblies can be stacked for storage; we recommend that you increase the
tire pressure by approximately 6 psi (0.4 bar).

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•
•
•

General
Information:

•
•
•
•
•

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Optimum conditions for storage of the complete wheels are provided by the Original Porsche
storage trolley, Part No. 000.044.000.38.
If the tires are not mounted on wheels, it is best to store them in a vertical position.
We recommend that you turn tires stored in this position every two weeks in order to prevent flat
spots.
Tires that are stacked in a horizontal position will become severely deformed and cannot be seated
properly in the rim flange when they are mounted.
Always use new valves when changing tires.
Always observe any possible instructions concerning the rolling direction and/or specifying which
side the tires must be mounted on.
Coat the tire beads and humps with mounting lubricant before mounting the tire. This ensures that
the tire beads will slide over the humps easily.
In order to prevent the tire from turning on the wheel, avoid extreme driving maneuvers (acceleration
and braking) during the first 100 to 200 miles with new or recently mounted tires.
In order to optimize smoothness of rolling, it is appropriate - and necessary in individual cases - to
mount the tire in a certain (favorable) position with respect to the wheel (matching).

Matching (uncontrolled and controlled) is explained below: Uncontrolled matching:
•

Turning the tire on the wheel by 90° or 120° if necessary in order to achieve an acceptable value with
regard to rolling smoothness (true running, imbalance and weight distribution of balance weights).

Controlled matching:
•

•

•

With a balancing machine with matching program. In most cases, this produces aneven better result
with regard to the rolling smoothness (true running, imbalance and weight distribution of the balance
weights) than can be achieved with uncontrolled matching.
Maximum permissible radial runout and lateral runout of the wheels < 0.7 mm. Maximum
permissible radial runout and lateral runout of the wheels with tires < 1.25 mm. Values < 1.50 mm
-ideally approx. 0.5 mm - are desirable.
The mounting pressure (seating pressure) of 58 psi/4.0 bar overpressure must not be exceeded
before both tire beads are evenly seated on the rim flange.

New Tires (Replacements):
•
•
•
•

If new tires are to be mounted or the tires of one axle are to be replaced, tires of the same make,
type and with the same specification code must always be used on each of the two axles.
If tires are replaced on one axle only, the different tread depth from that on the other axle can cause a
noticeable change in the familiar handling.
This is especially the case if new tires are mounted on the rear axle.
This effect decreases with increasing tire mileage.

When replacing a tire on an axle, make sure that the tread depth of the new tire does not differ from that of
the other tire by more than 30 %.
Refer to WM 449503 for specific details of the vehicle you are working on.

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Technical Information

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>The 2mm specification will be given here.
> If there is none listed then the default is 30%.

Repairs to Tires:
•

•

If a tire is damaged and it cannot be determined with absolute certainty that there is no ply damage
- with all of its consequences - or if the tire was thermally or mechanically overloaded due to a loss
of pressure or other prior damage, we recommend replacement of the tire in question for safety
reasons.
Repairs on “ZR” tires are not permissible, as is the use of inner tubes in tubeless tires.

Tire Aging:
•
•
•
•
•
•
•

References:

Tires age due to chemical and physical processes, which can impair their function.
Tires that are stored unused for an extended period harden and become brittle faster than tires that
are in continual use.
Hairline aging cracks can occur on older tires.
On tires in continual use, the kneading action activates the plasticizer in the rubber and thereby
prevents hardening and cracking.
Therefore, attention should be paid not only to the tread depth but also to the age of the tire.
Tires should not be older than 6 years.
The age of the tire can be determined via the DOT code on the sidewall, which indicates the
production date of the tire: e.g. DOT 2201= 22nd week of 2001.

 Workshop Manual '44 Wheels and tyres'
 Workshop Manual '440519 Removing and installing wheel'
 Workshop Manual '44 General information on Tyre Pressure Monitoring (TPM)'

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.

© 2020 Porsche Cars North America, Inc.

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