No. 29-23 Service Bulletin/Repair Instructions

4
911 (992)
Manufacturer's Certificate
29/23
ENU
4400
Approved: Wheels and Tires (29/23)
Revision:
This bulletin replaces bulletin Group 4 26/23, dated October 10, 2023.
Model Year:
As of 2021
Vehicle Type:
Type 992: 911 GT3, 911 GT3 Touring package, 911 GT3 RS, 911 S/T
Information:
Approval status: September 2023
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, 911 S/T

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
Nov 17, 2023

Page 1 of 10
4
911 (992)

4400
ENU
Manufacturer's Certificate
29/23

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
20/21-inch wheel “GT3”

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

Part No. 9GT.601.025.Q_FFF

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

Part No. 9GT.601.025.R_FFF

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

Part No. 9GT.601.025.B_FFF

RA: 11,5J x 21, RO 46 (winter)

Part No. 9GT.601.025.C_FFF

GT3
20/21-inch wheel “S/T”

FA: 9,5J x 20, RO 46 (summer)

Part No. 9GT.601.025.BE_FFF

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

Part No. 9GT.601.025.BF_FFF
S/T
Nov 17, 2023

Page 2 of 10
AfterSales
911 (992)
Manufacturer's Certificate
29/23
ENU
4400
4
20/21-inch wheel “GT3 RS” basic wheel

FA:10J x 20, RO 45 (summer)

Part No. 9GT.601.025.AE_FFF

RA: 13J x 21, RO 31 (summer)

Part No. 9GT.601.025.T__FFF
GT3 RS basic wheel
20/21-inch wheel “GT3 RS” Aluminum lightweight forged wheel

FA:10J x 20, RO 45 (summer)

Part No. 9GT.601.025.AF_FFF

RA: 13J x 21, RO 31 (summer)

Part No. 9GT.601.025.AH_FFF
GT3 RS Aluminum lightweight forged wheel
20/21-inch wheel “GT3 RS”

FA:10J x 20, RO 45 (summer)

Part No. 9GT.601.025.AL_FFF

RA: 13J x 21, RO 31 (summer)

Part No. 9GT.601.025.AM_FFF
GT3 RS
AfterSales
Nov 17, 2023

Page 3 of 10
4
911 (992)

4400
ENU
Manufacturer's Certificate
29/23
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 (444 ftlb.)
Tire make and type /

Label value (Link to EU database)
Tire size
911 GT3, 911 GT3 Touring-Package, 911 S/T

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

No offer for 992 S/T

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

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

Goodyear Eagle F1 Super Sport RS N0

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

RA: 315/30 ZR 21 (105Y) XL
No offer for 992 S/T

FA: https://eprel.ec.europa.eu/qr/1079540

RA: https://eprel.ec.europa.eu/qr/1100069

Michelin Pilot Sport Cup 2 R N0

No offer for 992 S/T

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

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

Pirelli P Zero Trofeo R N0

No offer for 992 S/T

FA: Label values currently not available.

RA: Label values currently not available.
Nov 17, 2023

Page 4 of 10
AfterSales
911 (992)
Manufacturer's Certificate
29/23
ENU
4400
4
Tire make and type /

Label value (Link to EU database)
Tire size
FA: 255/35 ZR 20 (93Y)

RA: 315/30 ZR 21 (105Y) XL
Pirelli P-Zero Corsa N0

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

RA: https://eprel.ec.europa.eu/qr/596216
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
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

Michelin Pilot Sport Cup 2 R N0

Label values currently not available
Winter Tires:
Tire make and type /

Label value (Link to EU database)
Tire size
911 GT3, 911 GT3 Touring-Package, 911 GT3 RS, 911 S/T

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

Not for India.

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

RA: https://eprel.ec.europa.eu/qr/529627
AfterSales
Nov 17, 2023

Page 5 of 10
4
911 (992)

4400
ENU
Manufacturer's Certificate
29/23
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.
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.

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Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

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