NHTSA ID Number: 11028373
Manufacturer Communication Number: No. 54-25
TSB/Document Date: 2026-02-05
Summary
Manufacturers certificate for approved wheels and tires on the 911, 911 T, 911 S, 911 4 GTS, 911 Targa 4 GTS, 911 Turbo S
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1608128
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/1608129
Tire size
Tire make and type /
Label value (link to EU database)
911 Carrera Turbo S
WITH hybrid
engine
Pirelli PZero R NA2
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1865052
FA: 255/35 ZR 20 (97Y) XL
RA: 325/30 ZR 21 (108Y) XL
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/1865067
Goodyear Eagle F1 SuperSport R NA2
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2091612
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2093910
Winter Tires:
Tire size
Tire make and type /
Label value (link to EU database)
911 Carrera / 911 Carrera T / 911 Carrera S
WITHOUT hybrid engine
FA: 235/40 R 19 96V XL
RA: 295/35 R 20 105V XL
Pirelli P Zero Winter 2 NA2
not for 911 Carrera S
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/1955871
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/1973064
AfterSales
Jan 5, 2026
Page 11 of 20
4
911 (992)
4400
ENU
Manufacturer's Certificate
54/25
Tire make and type /
Label value (link to EU database)
Tire size
911 Carrera / 911 Carrera T / 911 Carrera S
WITHOUT hybrid engine
Goodyear Ultragrip Performance 3 NA2
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2150488
FA: 245/35 R 20 95V XL
RA: 305/30 R 21 104V XL
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2128506
Michelin Pilot Alpin 5 NA2
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038237
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038238
Tire make and type /
Label value (link to EU database)
Tire size
911 Carrera GTS / 911 Carrera 4 GTS / 911 Targa 4 GTS
WITH hybrid engine
Goodyear Ultragrip Performance 3 NA2
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2150488
FA: 245/35 R 20 95V XL
RA: 305/30 R 21 104V XL
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2128506
Michelin Pilot Alpin 5 NA2
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038237
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2038238
Tire size
Tire make and type /
Label value (link to EU database)
911 Carrera Turbo S
WITH hybrid engine
Goodyear Ultragrip Performance 3 NA6
FA: HTTPS://EPREL.EC.EUROPA.EU/QR/2091610
FA: 245/35 R 20 95V XL
RA: 315/30 R 21 105V XL
RA: HTTPS://EPREL.EC.EUROPA.EU/QR/2091613
Michelin Pilot Alpin 5 NA6
FA: HTTP://EPREL.EC.EUROPA.EU/QR/2241792
RA: HTTP://EPREL.EC.EUROPA.EU/QR/2241790
Jan 5, 2026
Page 12 of 20
AfterSales
911 (992)
Manufacturer's Certificate
54/25
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
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
"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.
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.
WARNING
Driving with different tires (mixed tires)
•
Uncontrollable vehicle handling
Þ
⇒
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.
AfterSales
Jan 5, 2026
Page 13 of 20
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911 (992)
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ENU
Manufacturer's Certificate
54/25
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
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.
Standard tire pressure for summer tires
Standard tire pressure for summer tires
911 Carrera
Jan 5, 2026
Page 14 of 20
Tire size
Wheel size
Part load
Full load
Part load,
comfort air
pressure up to
270 km/h (168
mph)
235/40 ZR 19
8.5J x 19
FA
2.3 bar
(33 psi)
2.4 bar
(35 psi)
2.0 bar
(29 psi)
295/35 ZR 20
11.5J x 20
RA
2.6 bar
(37 psi)
3.0 bar
(44 psi)
2.2 bar
(31 psi)
AfterSales
911 (992)
Manufacturer's Certificate
54/25
ENU
4400
245/35 ZR 20
8.5J x 20
FA
2.3 bar
(33 psi)
2.6 bar
(37 psi)
2.0 bar
(29 psi)
305/30 ZR 21
11.5J x 21
RA
2.7 bar
(39 psi)
3.2 bar
(46 psi)
2.2 bar
(31 psi)
4
Standard tire pressure for summer tires
911 Carrera T
Tire size
Wheel size
Part load
Full load
Part load,
comfort air
pressure up to
270 km/h (168
mph)
245/35 ZR 20
8.5J x 20
FA
2.3 bar
(33 psi)
2.6 bar
(37 psi)
2.0 bar
((29 psi))
305/30 ZR 21
11.5J x 21
RA
2.7 bar
(39 psi)
3.2 bar
(46 psi)
2.2 bar
(31 psi)
Standard tire pressure for summer tires
911 Carrera S
C2S Coupé / C4S Coupé
Tire size
Wheel size
Part load
Full load
Part load,
comfort air
pressure
up to 270
km/h (168
mph)
245/35 ZR 20
8.5J x 20
FA
2.3 bar
(33 psi)
2.5 bar
(36 psi)
2.0 bar
((29 psi))
2.3 bar
(33 psi)
305/30 ZR 21
11.5J x 21
RA
2.6 bar
(37 psi)
3.1 bar
(45 psi)
2.2 bar
(31 psi)
2.6 bar
(37 psi)
AfterSales
Full load,
comfort air
pressure
up to 270
km/h (168
mph)
Jan 5, 2026
Page 15 of 20
4
911 (992)
4400
ENU
Manufacturer's Certificate
54/25
Standard tire pressure for summer tires
911 Carrera S
C2S Coupé Aerokit / C4S Coupé Aerokit
C2S convertible / C4S convertible
Tire size
Wheel size
Part load
Full load
Part load,
comfort air
pressure
up to 270
km/h (168
mph)
Full load,
comfort air
pressure
up to 270
km/h (168
mph)
245/35 ZR 20
8.5J x 20
FA
2.3 bar
(33 psi)
2.5 bar
(36 psi)
2.0 bar
((29 psi))
2.3 bar
(33 psi)
305/30 ZR 21
11.5J x 21
RA
2.7 bar
(39 psi)
3.2 bar
(46 psi)
2.2 bar
(31 psi)
2.7 bar
(39 psi)
Full load,
comfort air
pressure up
to 270 km/h
(168 mph)
Standard tire pressure for summer tires
911 Carrera S
C4S Targa
Tire size
Wheel size
Part load
Full load
Part load,
comfort air
pressure up
to 270 km/h
(168 mph)
245/35 ZR 20
8.5J x 20
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Last update on 2026-06-21 / Affiliate links / Images from Amazon Product Advertising API
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TSB/Document ID: No. 54-25
Replacement Service Bulletin Number:
MFR Communication Date: 2026-01-05
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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