No. 10-23

Installation and Conversion Instructions
Cayenne (9YA)
10/23
ENU
4439
4
Snow Chain
Cause:
Instructions for assembly and use
Model Year:
As of 2024
Restrictions:
NOT approved for use on the front axle!
NOT approved for use with all-weather tires (all-season tires)!
– Cayenne (9YA):
ONLY approved for winter complete wheels on the rear axle with the following dimensions:
•
•
20-inch winter complete wheel (295/45 R20 M+S on 10,5J x 20 RO 64 rim)
21-inch winter complete wheel (305/40 R21 M+S on 11J x 21 RO 58 rim)
– Cayenne Coupé (9YB):
ONLY approved for winter complete wheels on the rear axle with the following dimensions:
•
•
20-inch winter complete wheel (295/45 R20 M+S on 10,5J x 20 RO 55 rim)
21-inch winter complete wheel (305/40 R21 M+S on 11J x 21 RO 49 rim)
Figure 1
Notes:
Snow chains:
•
•
•
•
have been tested and approved for the rear axle of the Cayenne ( Figure 1).
have plastic elements (eyelets and sleeve on the spring steel clip) to protect the rim from damage.
can be installed easily in the narrow wheel housing on the rear axle using the spring steel clip.
can be repaired by retail outlets if necessary.
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Cayenne (9YA)
4439
Parts Info:
ENU
Installation and Conversion Instructions
10/23
9Y0.091.355.C
 Snow chains, set
Parts List:
Figure 2
2x
Snow chain  Figure 2 -1-
———
2x
Fitting glove  Figure 2 -2-
———
1x
Bag  Figure 2 -3-
———
2x
Chain link (for temporary repairs)  Figure 2 -4-
———
1x
Instructions for assembly and use (not shown)
———
Technical Data: – Min. spring steel clip diameter (closed): approx. 570 mm
– Max. spring steel clip diameter (opening dimension): approx. 660 mm (for installing approx. 980 mm)
– Empty weight: approx. 3560 g/piece
– Permissible. maximum speed (vmax): 50 km/h (30 mph)
DANGER
Driving with snow chains
•
Danger of injury
•
Risk of material damage

Snow chains may ONLY be used for driving on snow-covered and icy roads.

On partly snow-covered roads: Drive much more slowly.

Driving with snow chains in off-road areas has NOT been tested and approved.

Allow for change in vehicle handling (see also Owner's Manual).
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Tequipment
Installation and Conversion Instructions
Cayenne (9YA)
10/23
ENU
4439
4

Avoid spinning wheels installed with snow chains.

Observe recommended maximum speed of 30 MPH (50 km/h) on roads that are well covered with snow.

Immediately after installing and after driving a short distance (150–300 ft/50 – 100 m): Check that snow
chains are perfectly centered and re-tension if necessary.

After a distance of 12 miles (20 km) and after test emergency braking: Check that snow chains are
installed correctly and check for signs of wear.

If the installed snow chain hits/touches against a curb: Check that the snow chain is installed correctly
and check for signs of wear.

Before starting EVERY trip: Check that the snow chain is installed/positioned correctly on the wheel.

When towing a trailer, follow the instructions in the Owner’s Manual and observe all road traffic laws.
WARNING
Installing/removing snow chains
•
Danger of injury
•
Risk of damage to the wheel housing, fender and other vehicle parts

Learn how to handle snow chains by installing/removing them when dry as a test.

AFTER installation: Check clearance of the wheel WITH snow chain in extreme positions (compressed).

Always install/remove snow chains on level ground.

Always install/remove snow chains when the vehicle is stationary and secured as described in the Owner’s
Manual.

As soon as the wheel installed with the chain moves: Keep ALL parts of the body (fingers, hands and hair) a
safe distance away.

When tightening and loosening the tensioner: Keep ALL parts of the body (fingers, hands and hair) a safe
distance away.

For greater visibility and for your own safety when installing/removing snow chains, wear a Hi-vis jacket
(e.g. from PORSCHE TEQUIPMENT).

Read the Installation and Conversion Instructions carefully and follow these instructions exactly during
installation/removal.

Observe the specified tire pressure (see Owner's Manual). Reducing the tire pressure for installation/removal is NOT permitted.

Observe the snow chains' substantial own weight.
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Cayenne (9YA)
4439
ENU
10/23
Installation and Conversion Instructions
WARNING
Using snow chains
•
Danger of injury
•
Risk of material damage

Snow chains may ONLY be used if the vehicle and tire and rim combination have been approved by
Porsche for the use of snow chains.

Incorrect and improper use of snow chains, e.g. pulling, lifting or other actions, is NOT permitted! After
installing snow chains correctly, ONLY use them for driving on suitable surfaces.

The use of one snow chain is NOT permitted. ALWAYS use snow chains on the left and right side of the
vehicle when installing them on the rear axle.

Visually check previously used snow chains before installing. Damaged or broken snow chains must
NEVER be used. This applies even if the wire diameter of a chain link is more than half worn in just a small
area.

Broken chain elements can be repaired at retail outlets. ONLY use genuine spare parts for repairs.

After use: Clean/wash snow chains and leave them to dry. Store snow chains away from damaging
chemicals.
Information
Please inform the customer of this accordingly.
Assembly:
1
Preparatory work
1.1
Check whether the installed tire/wheel combination on the rear axle is listed/approved in the
Manufacturer’s Certificate ( “Cayenne” Driver’s Manual, section on “Tires and wheels”)
1.2
ONLY vehicles with adaptive air suspension with levelling system and height adjustment
including Porsche Active Suspension Management (PASM = I-no. 1BK):
Check chassis setup.
For installing the snow chain, set the chassis level to “High” if necessary ( “Cayenne”
Driver’s Manual, section on “Porsche Active Suspension Management (PASM) with air
suspension and levelling system”). Check chassis setup.
1.3
Remove snow and ice from around the wheel housings on the rear axle.
1.4
Unpack snow chain and read instructions carefully.
1.5
Check previously used snow chain for damage/breaks.
The wire diameter must NOT be worn by more than half at any point!
2
Install snow chain
2.1
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Position snow chain on the wheel
Tequipment
Installation and Conversion Instructions
2.1.1
Cayenne (9YA)
10/23
ENU
4439
4
Hold the snow chain at the ends of
the spring steel clips.
1
2
3
4
5
–
–
–
–
–
End of spring steel clip
Chain net
Locking plate
Tensioning chain
Bungee cord with hook
Arrange the chain net in such a way
that it hangs down correctly at the
clip ( Figure 3).
Turn entwined parts of the chain
back over the clip if necessary.
Figure 3
Information
The snow chain that was tested and approved for Porsche does NOT have blue
plastic corners ( Fig. 4, item 3).
2.1.2
Position snow chain in front of
the wheel with the opening facing
downwards.
1
2
3
– Spring steel clip
– Chain net
– Plastic corner
Figure 4
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Cayenne (9YA)
4439
ENU
Installation and Conversion Instructions
10/23
2.1.3
Pull the ends of the spring steel clip
the maximum distance apart (
Figure 5 -A-).
1
– End of spring steel clip
Guide snow chain over the wheel
from above ( Figure 5 -B-).
Figure 5
2.1.4
Guide the ends of the spring steel
clip at the bottom of the wheel
behind the wheel ( Figure 6 -C-).
1
2
2.2
– End of spring steel clip
– Chain bar
2.1.5
Carefully let the ends of the spring
steel clip go so that the spring steel
clip springs together.
2.1.6
Arrange the chain net and make
sure that no bars of the chain are
caught in the tread ( Figure 6
-Magnifier-).
Tension snow chain on the wheel
Figure 6
2.2.1
Drive forward or back to turn the
wheel by approx. 1/4 ( Figure 7
-Arrows-).
1
2
– Tensioning chain
– Locking plate
The tensioning chain ( Figure 7
-1-) must NOT be under the wheel.
Figure 7
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Tequipment
Installation and Conversion Instructions
2.2.2
Cayenne (9YA)
10/23
ENU
4439
4
Check that the tensioning chain is
running parallel at the tensioning
point and deflection roller (end of
spring steel clip on inside of wheel)
 Figure 8 -A- and is NOT twisted
 Figure 8 -B-.
1
2
3
A
B
– Tensioning chain
– Deflection roller (end of
spring steel clip)
– Tensioning point
– Tensioning chain routing:
“OK”
– Tensioning chain routing:
“NOT OK”
Figure 8
Turn deflection roller for spring steel clip if necessary ( Figure 8 -Arrow-).
2.2.3
Guide chain link of the tensioning
chain out of the lock in the slot
on the locking plate ( Figure 9
-Arrow-).
1
2
3
– Chain link
– Lock in slot on locking
plate
– Locking plate
To do this, press the chain link
past the locking lug on the lock (
Figure 9 -3-).
2.2.4
Figure 9
Grasp tensioning chain in the wheel
running surface area and pull it
firmly. ( Figure 10 -A-).
1
2
– Tensioning chain
– Ends of spring steel clip
The spring steel clip on the inside of
the wheel closes ( Figure 10 -B-).
Figure 10
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Cayenne (9YA)
4439
ENU
Installation and Conversion Instructions
10/23
2.2.5
Pull the tensioning chain tightly
through the locking plate ( Figure
11 -C-).
1
2
3
4
–
–
–
–
Tensioning chain
Locking plate with lock
Chain link
Slot on locking plate
Check that the colored part of the
tensioning chain ( Figure 11 -X-)
is pulled completely through the
locking plate.
Figure 11
Engage chain link of the tensioning chain in the slot and lock on the locking plate (
Figure 11 -D-).
2.3
Secure the snow chain on the wheel
2.3.1
Guide tensioning chain after the
locking plate to the orange plastic
eyelet first ( Figure 13).
1
2
3
2.3.2
– Tensioning chain
– Plastic eyelet
– Bungee cord with hook
Feed bungee cord with hook
through the plastic eyelet ( Figure
12 -Magnifier arrow-).
Figure 12
2.3.3
Feed the rest of the tensioning chain
in a circle ( Figure 13 -A-) over
the complete wheel through the
remaining plastic eyelets.
1
2
– Bungee cord with hook
– Chain link on outer chain
Figure 13
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Tequipment
Installation and Conversion Instructions
2.3.4
2.4
ENU
4439
4
– Last plastic eyelet
– Tensioning chain
– Bungee cord with hook
Engage hook of the bungee cord
slightly tensioned into a chain link on
the outer chain ( Figure 13 -B- or
 Figure 14 -B-).
Figure 14
Check that the snow chain is installed
correctly on the wheel ( Figure 15)
1
2
3
•
•
3
10/23
If the tensioning chain does not end
at the last plastic eyelet: Feed the
tensioning chain through the plastic
eyelets again ( Figure 14 -A-).
1
2
3
2.3.5
Cayenne (9YA)
– Area marked in red – tensioning
chain
– Slot on locking plate
– Deflection roller/tensioning point
The area marked in red on the tensioning
chain must be pulled completely through
the slot on the locking plate. The
distance between the area marked in
red and the slot on the locking plate
Figure 15
(dimension X  Figure 15 -X-) can vary
depending on the tire size.
Position of deflection roller/tensioning points (inside of wheel  Figure 15 -4-): must
NOT be lying on the running surface of the tire or touching the road.
Remove snow chain
3.1
ONLY vehicles with adaptive air suspension with levelling system and height adjustment
including Porsche Active Suspension Management (PASM = I-no. 1BK):
Check chassis setup.
For removing the snow chain, set the chassis level to “High” if necessary ( “Cayenne”
Driver’s Manual, section on “Porsche Active Suspension Management (PASM) with air
suspension and levelling system”). Check chassis setup.
3.2
Remove snow and ice from around the wheel housings on the rear axle.
3.3
Loosen snow chain.
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Cayenne (9YA)
4439
ENU
Installation and Conversion Instructions
10/23
3.3.1
To make it easier to remove the
snow chain: Drive/roll the vehicle
so that the locking plate of the snow
chain is at axle height ( Figure
16).
1
2
– Locking plate
– Axle height
3.3.2
Disengage bungee cord with hook
from the chain link.
3.3.3
Feed the tensioning chain through
the plastic eyelets as far as the
locking plate ( Figure 16 -1-).
Figure 16
3.3.4
Disengage the chain link at the
locking plate and pull the tensioning
chain through the locking plate (
Figure 17 -C-).
1
2
– Tensioning chain
– Locking plate
Figure 17
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Tequipment
Installation and Conversion Instructions
3.3.5
Cayenne (9YA)
10/23
ENU
4439
4
Hold the chain net above the centre
of the axle and pull it away from the
wheel ( Figure 18 -D-).
1
2
– Chain net
– End of spring steel clip
End of spring steel clip is rubbing
slightly on the tire running surface
( Figure 18 -E-).
Figure 18
3.4
Pull snow chain off the wheel.
3.4.1
If the end of the spring steel clip is
visible: Pull the ends of the spring
steel clip apart as far as possible
( Figure 19 -A-) and pull the snow
chain off the wheel from above (
Figure 19 -B-).
Figure 19
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Cayenne (9YA)
4439
ENU
Installation and Conversion Instructions
10/23
3.4.2
Set the snow chain down on the
road ( Figure 20).
Figure 20
NOTICE
Using snow chains
4
•
Damage to plastic eyelet/locking plate

The plastic eyelet/locking plate must be outside of the rolling area on the running
surface of the tire.
•
•
Jun 30, 2023
Page 12 of 13
Carefully drive the vehicle off the snow chain ( Figure 20 -Arrows-).
3.4.4
Shake out the snow chain and stow it away.
Snow chain maintenance
•
•
•
44 39 24 00:
3.4.3
Wash snow chain in hot water immediately after use and dry it.
Visually inspect the snow chain for signs of damage and adequate wire strength (chain links).
Snow chains must NOT be oiled! Spray snow chains with commercially available anti-rust agent
if necessary.
After drying, stow dry snow chains back in the vehicle if necessary.
Snow chains are made of high-quality steel, but are not rust-resistant. A small amount of rust will
not impair the quality of the snow chains.
–Snow chains (2 pieces) installed on the rear axle–
Includes:
Read instructions.
Check snow chains for damage before use and install them.
Check fitting and re-tension after a trip of 50–100 m/ 164 —
328 ft.
Tequipment
Labor time: 50 TU
Installation and Conversion Instructions
44 39 20 00:
Cayenne (9YA)
10/23
–Remove/Install snow chains (2 pieces) on the rear axle–
Includes:
Read instructions.
Remove installed snow chains.
Check snow chains for damage before use and install them.
Check fitting and re-tension after a trip of 50–100 m/ 164 —
328 ft.
ENU
4439
4
Labor time: 75 TU
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.
© 2023 Porsche Cars North America, Inc.
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