No. 54-25 Service Bulletin/Repair Instructions

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
4
911 (992)

4400
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
Axle
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
Axle
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
Axle
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
Axle
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
Axle
Part load
Full load
Part load,

comfort air

pressure up

to 270 km/h

(168 mph)
245/35 ZR 20
8.5J x 20

123

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

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