No. 53-25 Service Bulletin/Repair Instructions

4
911 (992)
Manufacturer's Certificate
53/25
ENU
4400
Approved: Wheels and Tires (53/25)

Revision:
This bulletin replaces bulletin Group 4 39/25, dated October 7, 2025.
Model Year:
As of 2025
Vehicle Type:
Type 992PA: 911 GT3, 911 GT3 Touring-Package
Cause:
Approval status: November 2025
Sizes:
Permissible tire 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"

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
FA: 9J x 20, RO 43

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

20/21"

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
AfterSales
Jan 5, 2026

Page 1 of 9
4
911 (992)

4400
ENU
Manufacturer's Certificate
53/25
20/21-inch wheel "GT3"

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

Part No. 9GT.601.025.BL_FFF

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

Part No. 9GT.601.025.BM_FFF
GT3
20/21-inch wheel "992 GT3/RS Winter"

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
992 GT3/RS Winter
Jan 5, 2026

Page 2 of 9
AfterSales
911 (992)
Manufacturer's Certificate
53/25
ENU
4400
4
20/21-inch wheel "992 GT3 WP"

FA: 9.5J x 20, RO 46

Part No. 9GT.601.025.BJ_FFF

RA: 12J x 21, RO 45

Part No. 9GT.601.025.BK_FFF
992 GT3 WP
20/21-inch - Wheel “OM-3”

FA: 9.5J x 20, RO 46

Part No.: 992.044.614

RA: 12J x 21, RO 45

Part No.: 992.044.615
OM-3
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 centring clamping set for balancing.

Do not use hard brushes to clean the wheels as these can cause deep scratches that cannot be removed by

polishing.

Never use solvents or other chemical substances not approved by Porsche on tires.
Information

Only install wheels with identical part numbers on each axle.
AfterSales
Jan 5, 2026

Page 3 of 9
4
911 (992)

4400
Wheel

Mounting:
Summer (UHP):
ENU
Manufacturer's Certificate
53/25
Using central wheel lock:

Tightening torque 600 Nm (442.5 ftlb.)
Tire make and type /

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

Goodyear Eagle F1 Super Sport R N1

FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1938931

FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1934678

Pirelli P Zero R N1

FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1840639

RA: HTTPS://EPREL.EC.EUROPA.EU/QR/1840638

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

RA: 315/30 ZR 21 (105Y) XL
Michelin Pilot Sport Cup 2 N1

FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1857004

RA: HTTPS://EPREL.EC.EUROPA.EU/QR/1851939

Pirelli P Zero Trofeo RS N1

FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2303256

RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2303257

Michelin Pilot Sport Cup 2 R N1

FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2164679

RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2164739
Winter tires:
Tire make and type /

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

FA: 245/35 R 20 95V XL

RA: 305/30 R 21 104V XL
Jan 5, 2026

Page 4 of 9
Michelin Pilot Alpin 5 NA2

FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038237

RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038238
AfterSales
911 (992)
Manufacturer's Certificate
53/25
ENU
4400
Arrow with inscription “Rotation”
= Directional mounting
“Inside/Outside” inscription
= Mounting on specified side only
Arrow with inscriptions “Rotation” and

“Inside/Outside”
= Directional mounting on specified side only.
4
Information

The tire pressure applies only to the tire makes and types approved by Porsche and is specified for cold tires

(approx. 20 °C/ 68 °F). The tire pressure must not be lower than the specified values.
Information

The tire pressure applies only to the tire makes and types approved by Porsche and is specified for cold tires

(approx. 20 °C/ 68 °F). The tire pressure must not be lower than the specified values.
Information

“N...” = Specification code of the tire, e.g. “N0”, “N1”, “N2” or “Nx0”, “Nx1”, “Nx2”, etc. The complete “N...”

code of the tires in question must be shown on the tire sidewall near the tire 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

•
Uncontrollable vehicle handling
Þ

⇒
Only use tires of the same make and type, with the same speed index and the same specification code (N0, N1, N2, etc.

or Nx0, Nx1, Nx2, etc.) on a vehicle.
AfterSales
Jan 5, 2026

Page 5 of 9
4
911 (992)

4400
ENU
Manufacturer's Certificate
53/25
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. Recommendation: Replace tires that are more than 6 years old.
⇒

Þ

⇒
Perform visual inspections.

Use only tires approved by Porsche.

WARNING
Driving at high speed with low tire pressure

•
Irreparable damage to tires
Þ

⇒
Set comfort and performance air pressure for tires only on vehicles with “Comfort pressure” and “Performance

pressure” selected in the instrument cluster.
Information

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Last update on 2026-03-24 / Affiliate links / Images from Amazon Product Advertising API

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