NHTSA ID Number: 11022901
Manufacturer Communication Number: No. 22-25
TSB/Document Date: 2025-09-08
Summary
Manufacturers certificate for approved wheels and tires on the 2025 911
4
911 (992)
Manufacturer's Certificate
22/25
ENU
4400
Approved: Wheels and Tires (22/25)
Revision:
This bulletin replaces bulletin Group 4 51/24, dated February 28, 2025
Model Year:
As of 2025
Vehicle Type:
Type 992PA: 911 GT3, 911 GT3 Touring-Package
Cause:
Approval status: June 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 colour code marking FFF) and Porsche logo
AfterSales
Aug 12, 2025
Page 1 of 8
4
911 (992)
4400
ENU
Manufacturer's Certificate
22/25
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
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
Aug 12, 2025
Page 2 of 8
AfterSales
911 (992)
Manufacturer's Certificate
22/25
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 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.
Wheel
Mounting:
Summer (UHP):
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
FA: 255/35 ZR 20 (97Y) XL
RA: 315/30 ZR 21 (105Y) XL
Pirelli P Zero R N1
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1840639
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/1840638
Michelin Pilot Sport Cup 2 N1
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1857004
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/1851939
AfterSales
Aug 12, 2025
Page 3 of 8
4
911 (992)
4400
Winter Tires:
ENU
Manufacturer's Certificate
22/25
Tire make and type /
Label value (Link to EU database)
Tire size
911 GT3, 911 GT3 Touring-Package
Michelin Pilot Alpin 5 NA2
FA: 245/35 R 20 95V XL
RA: 305/30 R 21 104V XL
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038237
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038238
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.
Information
In principle, only tires that at least correspond to the maximum vehicle speed may be installed on the vehicle.
There may be national exemptions for winter tires marked for M+S and 3PMSF (3 peak mountain snow flake),
which also permit tires that do not correspond to the maximum vehicle speed.
Information
As a general rule, Porsche does not recommend having tires repaired. Local legislation must always be
observed.
It is advisable to install winter tires for temperatures below 7 °C (44 °F), because the driving characteristics
of summer tires and UHP tires are reduced at low temperatures. Subfreezing temperatures can cause
permanent damage to summer tires and UHP tires.
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%. If this value is exceeded, we recommend that you replace both tires.
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.
Aug 12, 2025
Page 4 of 8
AfterSales
911 (992)
Manufacturer's Certificate
22/25
ENU
4400
4
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.
Tire Pressure:
WARNING
Incorrect tire pressure
•
Uncontrollable vehicle handling
Þ
⇒
Adjust the tire pressure according to specifications. Never allow the pressure to fall below the minimum pressure.
Þ
⇒
Check age of tires. Recommendation: Replace tires that are more than 6 years old.
Þ
⇒
Perform visual inspections.
Þ
⇒
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
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.
AfterSales
Aug 12, 2025
Page 5 of 8
4
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TSB/Document ID: No. 22-25
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: WHEELS
MFR Component System:
MFR Component Subsystem:
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