No. 11-23 Service Bulletin/Repair Instructions

4
911 (992)
Manufacturer's Certificate
11/23
ENU
4400
Approved: Wheels and Tires (11/23)
Revision:
This bulletin replaces bulletin Group 4 61/22, dated January 20, 2023.
Model Year:
As of 2021
Vehicle Type:
Type 992 (Coupé / Cabriolet): 911 GT3, 911 GT3 Touring package, 911 GT3 RS
Information:
Approval status: November 2022
Sizes:
Permissible summer tires and wheel sizes

(RO = rim offset in mm, FA = front axle, RA = rear axle)

Tire sizes
Wheel sizes
Snow

chains
911 GT3, 911 GT3 Touring package

Summer (UHP)

20/21-inch

FA: 255/35 ZR 20 (97Y) XL

RA: 315/30 ZR 21 (105Y) XL
FA: 9.5J x 20, RO 46

RA: 12J x 21, RO 45
No
20/21-inch

FA: 245/35 R 20 95V XL

RA: 305/30 R 21 104V XL
FA: 9J x 20, RO 43

RA: 11.5J x 21, RO 46
RA only
Tire sizes
Wheel sizes
Snow

chains
FA: 10J x 20, RO 45

RA: 13J x 21, RO 31
No
20/21-inch

FA: 255/35 ZR 20 (93Y)

RA: 315/30 ZR 21 (105Y) XL

Winter
911 GT3 RS

Summer (UHP)

20/21-inch

FA: 275/35 ZR20 (102Y) XL

RA: 335/30 ZR21 (109Y) XL
AfterSales
Aug 4, 2023

Page 1 of 9
4
911 (992)

4400
ENU
Manufacturer's Certificate
11/23

Tire sizes
Wheel sizes
Snow

chains
FA: 9J x 20, RO 43

RA: 11.5J x 21, RO 46
RA only
Winter

20/21-inch

FA: 245/35 R 20 95V XL

RA: 305/30 R 21 104V XL

Wheels:
Overview of Porsche wheels for summer (UHP) and winter tires

Identification on the inside of the wheel:

Wheel size, rim offset (RO) in mm, part number (without color code marking FFF) and Porsche logo
20-inch-wheel "GT3"

FA: 9.5J x 20, RO 46 (summer (UHP))

Part No. 9GT.601.025.Q_FFF

FA: 9J x 20, RO 43 (winter)

Part No. 9GT.601.025.B_FFF
GT3
21-inch-wheel "GT3"

RA: 12J x 21, RO 45 (summer (UHP))

Part No. 9GT.601.025.R_FFF

RA: 11.5J x 21, RO 46 (winter)

Part No. 9GT.601.025.C_FFF
GT3
Aug 4, 2023

Page 2 of 9
AfterSales
911 (992)
Manufacturer's Certificate
11/23
ENU
4400
4
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.

Wheel

mounting:
Summer (UHP):
using central wheel lock:

Tightening torque 600 Nm
Tire make and type /

Label value (Link to EU database)
Tire size
911 GT3, 911 GT3 Touring package

Michelin Pilot Sport Cup 2 N0

FA: https://eprel.ec.europa.eu/qr/410894

RA: https://eprel.ec.europa.eu/qr/408874

Goodyear Eagle F1 Super Sport R N0

FA: 255/35 ZR 20 (97Y) XL

RA: 315/30 ZR 21 (105Y) XL
Not for South Korea.

Not for Japan.

FA: https://eprel.ec.europa.eu/qr/530187

RA: https://eprel.ec.europa.eu/qr/530188

Michelin Pilot Sport Cup 2 R N0

FA: https://eprel.ec.europa.eu/qr/409102

RA: https://eprel.ec.europa.eu/qr/408957

Pirelli P-Zero Corsa N0
FA: 255/35 ZR 20 (93Y)

RA: 315/30 ZR 21 (105Y) XL
Not for Japan.

FA: https://eprel.ec.europa.eu/qr/596215

RA: https://eprel.ec.europa.eu/qr/596216
AfterSales
Aug 4, 2023

Page 3 of 9
4
911 (992)

4400
ENU
Manufacturer's Certificate
11/23
Tire make and type /

Label value (Link to EU database)
Tire size
911 GT3 RS

Michelin Pilot Sport Cup 2 N0

FA: https://eprel.ec.europa.eu/qr/1138011

RA: https://eprel.ec.europa.eu/qr/1138008

Goodyear Eagle F1 Supersport R N0

FA: 275/35 ZR20 (102Y) XL

RA: 335/30 ZR21 (109Y) XL
Not for South Korea.

FA: https://eprel.ec.europa.eu/qr/1057890

RA: https://eprel.ec.europa.eu/qr/1057891

Pirelli P-Zero Corsa N0

FA: https://eprel.ec.europa.eu/qr/596966

RA: https://eprel.ec.europa.eu/qr/596967
Winter Tires:
Tire make and type /

Label value (Link to EU database)
Tire size
911 GT3, 911 GT3 Touring package, 911 GT3 RS

Michelin Pilot Alpin 5 NA5

FA: https://eprel.ec.europa.eu/qr/411084

FA: 245/35 R 20 95V XL

RA: 305/30 R 21 104V XL
RA: https://eprel.ec.europa.eu/qr/410097

Goodyear Ultragrip Performance Gen-1 NA0

FA: https://eprel.ec.europa.eu/qr/529616

RA: https://eprel.ec.europa.eu/qr/529627
Aug 4, 2023

Page 4 of 9
Arrow with inscription “Rotation”
= directional mounting
"Inside/Outside" inscription
= mounting on specified side only
Arrow with both inscriptions “Rotation” and

“Inside/Outside”
= directional mounting on specified side only.
AfterSales
911 (992)
Manufacturer's Certificate
11/23
ENU
4400
4
Information

If a tire is damaged and it is not possible to determine with absolute certainty that there is no ply damage

- with all of its consequences - or if the tire was thermally and/or mechanically overloaded due to a loss of

pressure or other prior damage, replace the tire in question for safety reasons.

Repairs to "V", "W", "Y" and "ZR" tires are not permissable, as well as the use of inner tubes in tubeless

tires. Please inform your customers accordingly. It is advisable to mount winter tires at temperatures

below 45° F/7°C , because the driving characteristics of summer tires are reduced at low temperatures.

Extremely low temperatures can cause permanent damage to summer tires.
Information

"N..." = Specification code of the tire, e.g. "NA0", "NA1", "NA2" ... The complete “N ...” code of the

relevant tire makes must be shown on the tire sidewall near the type designation.

Instructions for correct mounting of the tires are also given on the tire sidewall. If there are no mounting

instructions on the tire sidewall, the tire must be mounted so that the DOT marking is visible from the

outside.

WARNING

Driving with different tires (mixed tires)

•
Uncontrollable vehicle handling

Only use tires of the same make and type, with the same speed index and the same specification code

(NA0, NA1, NA2, etc.) on a vehicle.
Tire Pressure:

WARNING

Incorrect tire pressure

•
Uncontrollable vehicle handling

Adjust the tire pressure according to specifications. Never allow the pressure to fall below the minimum

pressure.

Check age of tires. Replace tires that are more than 6 years old.

Perform visual inspections.

Use only tires recommended by Porsche.

WARNING
Driving at high speed with low tire pressure can cause irreparable damage to tires.


Set Comfort air pressure for tires only on vehicles with Tire Pressure Monitoring System (TPMS) and

“Comfort” selected in the "Tire pressure" main menu in the multi-function display.
AfterSales
Aug 4, 2023

Page 5 of 9
4
911 (992)

4400
ENU

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