Porsche 911 Tyre Pressures

Manufacturer-recommended front and rear pressures for every 911 tyre size and variant — in psi, bar or kPa.

6
Wheel sizes
5
Model variants
£30
New tyres from

Find the right pressure for your Porsche 911

Not sure of your wheel size? It's the last number in the tyre size on your sidewall.

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How to check

Checking your Porsche 911 tyre pressure

Two minutes at home or on a garage forecourt is all it takes.

Find your pressure

Look up your tyre size in the pressure chart, or check the sticker inside the driver's door jamb or fuel filler flap.

Check the tyres cold

Recommended figures are cold pressures — measure before driving, or at least a couple of hours after a journey.

Top up all four monthly

Check every tyre (and the spare) once a month and before long trips, then refit the valve caps securely.

Tyre Pressure Chart

Recommended pressures for your Porsche 911

Cold inflation pressures as recommended by Porsche. Use the laden figures when the car is fully loaded with passengers or luggage.

Tyre sizeFrontFront (loaded)RearRear (loaded)
205/55 R16 91H 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/55 R16 90Y 911 36 psi2.5 bar248 kPa ––– ––– –––
205/55 R16 91Y 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/55 R16 91H 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/55 R16 91Y 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/50 R16 96H 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
225/50 R16 92Y 911 ––– ––– 44 psi3.0 bar303 kPa –––
225/50 R16 96H 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
245/45 R16 94H 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
245/45 R16 94Y 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
245/45 R16 94H 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
245/45 R16 94Y 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
205/50 R17 93H 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/50 R17 93V 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/50 R17 89W 911 37 psi2.6 bar255 kPa ––– ––– –––
205/50 R17 89Y 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/50 R17 90Y 911 36 psi2.5 bar248 kPa ––– ––– –––
205/50 R17 89H 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
205/50 R17 89W 911 CARRERA 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa ––– –––
205/50 R17 89Y 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
205/50 R17 89H 911 TARGA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
205/50 R17 93H 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/50 R17 93V 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
205/50 R17 89Y 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/45 R17 90H 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
225/45 R17 91H 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
225/45 R17 94V 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
225/45 R17 90H 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
225/45 R17 90H 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
225/45 R17 91H 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
225/45 R17 94V 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
255/40 R17 89W 911 ––– ––– 37 psi2.6 bar255 kPa –––
255/40 R17 92Y 911 ––– ––– 36 psi2.5 bar248 kPa –––
255/40 R17 94Y 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
255/40 R17 94W 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
255/40 R17 94Y 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
255/40 R17 94Y 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
225/40 R18 88H 911 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 92H 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/40 R18 88V 911 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 92V 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/40 R18 88Y 911 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 92Y 911 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/40 R18 88H 911 CARRERA 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa ––– –––
225/40 R18 88V 911 CARRERA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/40 R18 92V 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 88Y 911 CARRERA 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 92Y 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 92H 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/40 R18 92V 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/40 R18 88Y 911 TARGA 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 92Y 911 TARGA 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa ––– –––
225/40 R18 92V 911 TURBO 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
225/40 R18 88Y 911 TURBO 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R18 91V 911 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R18 91Y 911 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R18 91V 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R18 91Y 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R18 91Y 911 TARGA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R18 91V 911 TURBO 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R18 91Y 911 TURBO 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa ––– –––
265/35 R18 93H 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/35 R18 93V 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/35 R18 97V 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
265/35 R18 93Y 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/35 R18 97Y 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
265/35 R18 93H 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
265/35 R18 93V 911 CARRERA ––– ––– 44 psi3.0 bar303 kPa 44 psi3.0 bar303 kPa
265/35 R18 100Y 911 CARRERA ––– ––– 36 psi2.5 bar248 kPa –––
265/35 R18 93Y 911 CARRERA ––– ––– 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa
265/35 R18 97Y 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/35 R18 97V 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
265/35 R18 93Y 911 TARGA ––– ––– 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa
265/35 R18 97Y 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
265/35 R18 93Y 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/40 R18 97V 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/40 R18 101V 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/40 R18 97V 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/40 R18 101Y 911 CARRERA ––– ––– 39 psi2.7 bar269 kPa 37 psi2.6 bar255 kPa
265/40 R18 101V 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/40 R18 97V 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
285/30 R18 98H 911 ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
285/30 R18 94W 911 ––– ––– 36 psi2.5 bar248 kPa –––
285/30 R18 93Y 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
285/30 R18 93Y 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
285/30 R18 98Y 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
285/30 R18 98H 911 TARGA ––– ––– 43 psi3.0 bar296 kPa 43 psi3.0 bar296 kPa
285/30 R18 93Y 911 TARGA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
285/30 R18 93Y 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/30 R18 91Y 911 ––– ––– 35 psi2.4 bar241 kPa 44 psi3.0 bar303 kPa
295/30 R18 98Y 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/30 R18 91Y 911 CARRERA ––– ––– 36 psi2.5 bar248 kPa –––
295/30 R18 98Y 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/30 R18 91Y 911 TURBO ––– ––– 36 psi2.5 bar248 kPa –––
295/30 R18 98Y 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/35 R18 99V 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/35 R18 99V 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
315/30 R18 98Y 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
315/30 R18 98Y 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
315/30 R18 98Y 911 TARGA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
315/30 R18 98Y 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
235/35 R19 87V 911 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/35 R19 87Y 911 33 psi2.3 bar228 kPa 32 psi2.2 bar221 kPa ––– –––
235/35 R19 87V 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/35 R19 87Y 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/35 R19 91Y 911 CARRERA 33 psi2.3 bar228 kPa ––– ––– –––
235/35 R19 87V 911 TURBO 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/35 R19 87Y 911 TURBO 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
235/40 R19 92V 911 32 psi2.2 bar221 kPa 35 psi2.4 bar241 kPa ––– –––
235/40 R19 92Y 911 30 psi2.1 bar207 kPa 35 psi2.4 bar241 kPa ––– –––
235/40 R19 92V 911 CARRERA 334 psi23.0 bar2303 kPa 334 psi23.0 bar2303 kPa ––– –––
235/40 R19 96W 911 CARRERA 33 psi2.3 bar228 kPa 33 psi2.3 bar228 kPa ––– –––
235/40 R19 92Y 911 CARRERA 334 psi23.0 bar2303 kPa 35 psi2.4 bar241 kPa ––– –––
235/40 R19 92V 911 TARGA 32 psi2.2 bar221 kPa 35 psi2.4 bar241 kPa ––– –––
235/40 R19 92Y 911 TARGA 334 psi23.0 bar2303 kPa 35 psi2.4 bar241 kPa ––– –––
235/40 R19 92V 911 TURBO 30 psi2.1 bar207 kPa 30 psi2.1 bar207 kPa ––– –––
235/40 R19 92Y 911 TURBO 30 psi2.1 bar207 kPa 35 psi2.4 bar241 kPa ––– –––
285/35 R19 99V 911 ––– ––– 35 psi2.4 bar241 kPa 38 psi2.6 bar262 kPa
285/35 R19 103Y 911 ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
285/35 R19 99V 911 CARRERA ––– ––– 35 psi2.4 bar241 kPa 38 psi2.6 bar262 kPa
285/35 R19 99W 911 CARRERA ––– ––– 35 psi2.4 bar241 kPa 38 psi2.6 bar262 kPa
285/35 R19 103Y 911 CARRERA ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
285/35 R19 99V 911 TARGA ––– ––– 35 psi2.4 bar241 kPa 38 psi2.6 bar262 kPa
285/35 R19 103Y 911 TARGA ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
285/35 R19 99V 911 TURBO ––– ––– 35 psi2.4 bar241 kPa 38 psi2.6 bar262 kPa
285/35 R19 103Y 911 TURBO ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/30 R19 100V 911 ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/30 R19 100V 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/30 R19 100Y 911 CARRERA 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 32 – 37 psi2.2 – 2.6 bar221 – 255 kPa 32 – 37 psi2.2 – 2.6 bar221 – 255 kPa
295/30 R19 100V 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/30 R19 100Y 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
295/35 R19 104V 911 ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/35 R19 104Y 911 ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/35 R19 100V 911 CARRERA ––– ––– 35 psi2.4 bar241 kPa 38 psi2.6 bar262 kPa
295/35 R19 104V 911 CARRERA ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/35 R19 104Y 911 CARRERA ––– ––– 35 psi2.4 bar241 kPa 38 psi2.6 bar262 kPa
295/35 R19 104V 911 TARGA ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/35 R19 104V 911 TURBO ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
305/30 R19 102Y 911 ––– ––– 39 psi2.7 bar269 kPa 32 psi2.2 bar221 kPa
305/30 R19 102V 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
305/30 R19 102Y 911 CARRERA ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
305/30 R19 102Y 911 TURBO ––– ––– 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
245/35 R20 91V 911 32 psi2.2 bar221 kPa 38 psi2.6 bar262 kPa ––– –––
245/35 R20 91Y 911 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa ––– –––
245/35 R20 91V 911 CARRERA 32 psi2.2 bar221 kPa 35 psi2.4 bar241 kPa ––– –––
245/35 R20 91Y 911 CARRERA 30 – 33 psi2.1 – 2.3 bar207 – 228 kPa 33 – 36 psi2.3 – 2.5 bar228 – 248 kPa 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
245/35 R20 95Y 911 CARRERA 33 psi2.3 bar228 kPa 33 psi2.3 bar228 kPa ––– –––
245/35 R20 91V 911 GT3 32 psi2.2 bar221 kPa 35 psi2.4 bar241 kPa ––– –––
245/35 R20 91Y 911 GT3 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa ––– –––
245/35 R20 91V 911 TARGA 32 psi2.2 bar221 kPa 35 psi2.4 bar241 kPa ––– –––
245/35 R20 91Y 911 TARGA 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa ––– –––
245/35 R20 91V 911 TURBO 32 psi2.2 bar221 kPa 35 psi2.4 bar241 kPa ––– –––
245/35 R20 91Y 911 TURBO 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa ––– –––
245/35 R20 95Y 911 TURBO 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa ––– –––
265/35 R20 99Y 911 33 psi2.3 bar228 kPa 36 psi2.5 bar248 kPa ––– –––
265/35 R20 99Y 911 CARRERA 33 psi2.3 bar228 kPa 38 psi2.6 bar262 kPa ––– –––
265/35 R20 99Y 911 TARGA 33 psi2.3 bar228 kPa 38 psi2.6 bar262 kPa ––– –––
265/35 R20 99Y 911 TURBO 33 psi2.3 bar228 kPa 38 psi2.6 bar262 kPa ––– –––
295/30 R20 97V 911 ––– ––– 35 psi2.4 bar241 kPa 41 psi2.8 bar283 kPa
295/30 R20 101Y 911 ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/30 R20 97V 911 CARRERA ––– ––– 35 psi2.4 bar241 kPa 41 psi2.8 bar283 kPa
295/30 R20 101Y 911 CARRERA ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/30 R20 97V 911 GT3 ––– ––– 35 psi2.4 bar241 kPa 41 psi2.8 bar283 kPa
295/30 R20 97V 911 TARGA ––– ––– 35 psi2.4 bar241 kPa 41 psi2.8 bar283 kPa
295/30 R20 101Y 911 TARGA ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/30 R20 101V 911 TURBO ––– ––– 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
295/30 R20 97V 911 TURBO ––– ––– 35 psi2.4 bar241 kPa 41 psi2.8 bar283 kPa
295/30 R20 101Y 911 TURBO ––– ––– 36 psi2.5 bar248 kPa 42 psi2.9 bar290 kPa
295/35 R20 101V 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
295/35 R20 105W 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
305/30 R20 103W 911 ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103Y 911 ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103W 911 CARRERA ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103Y 911 CARRERA ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103Y 911 GT3 ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103W 911 TARGA ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103Y 911 TARGA ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103W 911 TURBO ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
305/30 R20 103Y 911 TURBO ––– ––– 39 psi2.7 bar269 kPa 45 psi3.1 bar310 kPa
315/35 R20 110V 911 ––– ––– 35 psi2.4 bar241 kPa 44 psi3.0 bar303 kPa
315/35 R20 110V 911 CARRERA ––– ––– 35 psi2.4 bar241 kPa 44 psi3.0 bar303 kPa
315/35 R20 110V 911 TARGA ––– ––– 35 psi2.4 bar241 kPa 44 psi3.0 bar303 kPa
315/35 R20 110V 911 TURBO ––– ––– 35 psi2.4 bar241 kPa 44 psi3.0 bar303 kPa
295/30 R21 98V 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
305/30 R21 100Y 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
305/30 R21 104Y 911 CARRERA ––– ––– 37 psi2.6 bar255 kPa 37 psi2.6 bar255 kPa
325/30 R21 108Y 911 ––– ––– 36 psi2.5 bar248 kPa 44 psi3.0 bar303 kPa
325/30 R21 108Y 911 CARRERA ––– ––– 36 psi2.5 bar248 kPa 44 psi3.0 bar303 kPa
325/30 R21 108Y 911 TARGA ––– ––– 36 psi2.5 bar248 kPa 44 psi3.0 bar303 kPa
325/30 R21 108Y 911 TURBO ––– ––– 36 psi2.5 bar248 kPa 44 psi3.0 bar303 kPa

Always double-check against the tyre placard inside the driver's door or your Porsche handbook — pressures can vary by exact specification and year.

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Why it matters

The right pressure pays for itself

Tyres naturally lose around 1–2 psi a month, and more in cold weather — so even careful drivers end up under-inflated. Running your 911 below Porsche's recommended pressure increases rolling resistance, which means more fuel burned, faster shoulder wear and longer braking distances in the wet.

Over-inflating isn't the answer either: too much air shrinks the tyre's contact patch, wearing the centre of the tread and making grip and ride quality worse. The recommended figures in the chart are the sweet spot — and if you're carrying a full load of passengers or luggage, switch to the laden values before you set off.

How pressure shapes your grip on the road

Under-inflated Only the shoulders touch — vague steering, extra fuel, hot edges
Correct pressure Full, even contact — best grip, wear and fuel economy
Over-inflated Just the centre grips — harsher ride, faster middle wear

The red zones are where a mis-inflated tyre carries the load — and where it wears out first.

Help & Advice

Tyre pressure questions, answered

What tyre pressure should a Porsche 911 be?
It depends on your tyre size and variant — most 911 fitments sit roughly between 30 and 38 psi (about 2.1–2.6 bar). Use the chart on this page to find your exact size, and confirm against the sticker inside the driver's door jamb or your handbook.
Where do I find the recommended pressure on the car?
Most Porsche models have a tyre placard inside the driver's door jamb; some print it inside the fuel filler flap or glovebox lid. It lists front and rear pressures for each approved tyre size, including fully-laden figures. The owner's handbook has the same table.
When should I use the laden pressures?
Use the laden (loaded) figures when the car is carrying close to a full load — four or five occupants, a packed boot, or towing. The extra pressure supports the added weight and keeps the car stable. Drop back to the normal figures once you've unloaded.
What's the difference between psi, bar and kPa?
They're just different units for the same pressure. UK forecourt gauges usually read psi (pounds per square inch), European handbooks often quote bar, and kPa (kilopascals) appears on many door stickers. 1 bar = 14.5 psi = 100 kPa — or simply switch units on the pressure chart.
How often should I check my tyre pressures?
Once a month, and always before a long journey or when loading the car up. Tyres lose air naturally, and a visual glance won't spot a few psi missing. Check them cold, and if one tyre keeps losing pressure faster than the rest, have it inspected — it may have a slow puncture.
Still stuck? Chat with our team — we're happy to help. 🙂

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