Audi A8 Tyre Pressures

Manufacturer-recommended front and rear pressures for every A8 tyre size and variant — in psi, bar or kPa.

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Wheel sizes
4
Model variants
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Find the right pressure for your Audi A8

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 Audi A8 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 Audi A8

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

Tyre sizeFrontFront (loaded)RearRear (loaded)
235/60 R17 102H A8 S8 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
235/60 R17 102Y A8 S8 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
235/60 R17 102Y A8 TDI 32 – 35 psi2.2 – 2.4 bar221 – 241 kPa 35 – 36 psi2.4 – 2.5 bar241 – 248 kPa 29 – 30 psi2.0 – 2.1 bar200 – 207 kPa 36 – 38 psi2.5 – 2.6 bar248 – 262 kPa
235/55 R18 104H A8 S8 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
235/55 R18 104Y A8 S8 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
235/55 R18 104H A8 TDI 35 – 45 psi2.4 – 3.1 bar241 – 310 kPa 36 – 48 psi2.5 – 3.3 bar248 – 331 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 38 – 45 psi2.6 – 3.1 bar262 – 310 kPa
235/55 R18 104Y A8 TDI 35 – 41 psi2.4 – 2.8 bar241 – 283 kPa 36 – 44 psi2.5 – 3.0 bar248 – 303 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 38 – 44 psi2.6 – 3.0 bar262 – 303 kPa
235/55 R18 104H A8 TFSI 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
235/55 R18 104Y A8 TFSI 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
235/50 R19 103H A8 S8 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
235/50 R19 103H A8 TDI 35 – 45 psi2.4 – 3.1 bar241 – 310 kPa 36 – 48 psi2.5 – 3.3 bar248 – 331 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 38 – 45 psi2.6 – 3.1 bar262 – 310 kPa
235/50 R19 103H A8 TFSI 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
255/45 R19 104V A8 S8 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
255/45 R19 104Y A8 S8 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
255/45 R19 104V A8 TDI 35 – 41 psi2.4 – 2.8 bar241 – 283 kPa 36 – 44 psi2.5 – 3.0 bar248 – 303 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 36 – 44 psi2.5 – 3.0 bar248 – 303 kPa
255/45 R19 104Y A8 TDI 35 – 41 psi2.4 – 2.8 bar241 – 283 kPa 36 – 44 psi2.5 – 3.0 bar248 – 303 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 36 – 44 psi2.5 – 3.0 bar248 – 303 kPa
255/45 R19 104V A8 TFSI 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
255/45 R19 104Y A8 TFSI 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
265/40 R20 104Y A8 QUATTRO 30 psi2.1 bar207 kPa 30 psi2.1 bar207 kPa 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa
265/40 R20 104V A8 S8 36 – 41 psi2.5 – 2.8 bar248 – 283 kPa 39 – 44 psi2.7 – 3.0 bar269 – 303 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 36 – 44 psi2.5 – 3.0 bar248 – 303 kPa
265/40 R20 104Y A8 S8 30 – 41 psi2.1 – 2.8 bar207 – 283 kPa 30 – 44 psi2.1 – 3.0 bar207 – 303 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 32 – 44 psi2.2 – 3.0 bar221 – 303 kPa
265/40 R20 104V A8 TDI 35 – 45 psi2.4 – 3.1 bar241 – 310 kPa 36 – 48 psi2.5 – 3.3 bar248 – 331 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 36 – 45 psi2.5 – 3.1 bar248 – 310 kPa
265/40 R20 104Y A8 TDI 30 – 41 psi2.1 – 2.8 bar207 – 283 kPa 30 – 44 psi2.1 – 3.0 bar207 – 303 kPa 30 – 38 psi2.1 – 2.6 bar207 – 262 kPa 32 – 44 psi2.2 – 3.0 bar221 – 303 kPa
265/40 R20 104V A8 TFSI 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
265/40 R20 104Y A8 TFSI 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
265/35 R21 101W A8 S8 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
265/35 R21 101Y A8 S8 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
275/35 R21 103V A8 S8 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
275/35 R21 103W A8 S8 45 psi3.1 bar310 kPa 48 psi3.3 bar331 kPa 38 psi2.6 bar262 kPa 45 psi3.1 bar310 kPa
275/35 R21 103Y A8 S8 41 psi2.8 bar283 kPa 44 psi3.0 bar303 kPa 38 psi2.6 bar262 kPa 44 psi3.0 bar303 kPa
275/35 R21 103W A8 TDI 35 psi2.4 bar241 kPa 36 psi2.5 bar248 kPa 30 psi2.1 bar207 kPa 38 psi2.6 bar262 kPa
275/35 R21 103Y A8 TDI 32 – 35 psi2.2 – 2.4 bar221 – 241 kPa 32 – 36 psi2.2 – 2.5 bar221 – 248 kPa 30 – 32 psi2.1 – 2.2 bar207 – 221 kPa 32 – 38 psi2.2 – 2.6 bar221 – 262 kPa

Always double-check against the tyre placard inside the driver's door or your Audi 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 A8 below Audi'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 Audi A8 be?
It depends on your tyre size and variant — most A8 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 Audi 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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