Smart Forfour Tyre Pressures

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

4
Wheel sizes
10
Model variants
£26
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Find the right pressure for your Smart Forfour

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 Smart Forfour 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 Smart Forfour

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

Tyre sizeFrontFront (loaded)RearRear (loaded)
175/65 R14 82T FORFOUR COOLSTYLE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
175/65 R14 82T FORFOUR PASSION 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
175/65 R14 82T FORFOUR PULSE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
155/60 R15 74H FORFOUR 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
155/60 R15 74H FORFOUR EDITION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
155/60 R15 74H FORFOUR ELECTRIC 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
155/60 R15 74H FORFOUR NIGHT 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
155/60 R15 74H FORFOUR PASSION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
155/60 R15 74H FORFOUR PRIME 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
155/60 R15 74H FORFOUR PROXY 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR EDITION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR ELECTRIC 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR NIGHT 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR PASSION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR PRIME 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR PROXY 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
165/65 R15 81T FORFOUR URBANSHADOW 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
175/55 R15 77H FORFOUR ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
175/55 R15 77H FORFOUR EDITION ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
175/55 R15 77H FORFOUR ELECTRIC ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
175/55 R15 77H FORFOUR NIGHT ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
175/55 R15 77H FORFOUR PASSION ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
175/55 R15 77H FORFOUR PRIME ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
175/55 R15 77H FORFOUR PROXY ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 84H FORFOUR 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
185/60 R15 84T FORFOUR ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 84H FORFOUR EDITION 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
185/60 R15 84T FORFOUR EDITION ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 84H FORFOUR ELECTRIC 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
185/60 R15 84T FORFOUR ELECTRIC ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 84H FORFOUR NIGHT 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
185/60 R15 84T FORFOUR NIGHT ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 84H FORFOUR PASSION 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
185/60 R15 84T FORFOUR PASSION ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 84H FORFOUR PRIME 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
185/60 R15 84T FORFOUR PRIME ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 84H FORFOUR PROXY 32 psi2.2 bar221 kPa 32 psi2.2 bar221 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
185/60 R15 84T FORFOUR PROXY ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/60 R15 88T FORFOUR URBANSHADOW ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
195/50 R15 82H FORFOUR COOLSTYLE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
195/50 R15 82H FORFOUR PASSION 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
195/50 R15 82H FORFOUR PULSE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
175/50 R16 77T FORFOUR NIGHT 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81H FORFOUR 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81H FORFOUR EDITION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR EDITION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81H FORFOUR ELECTRIC 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR ELECTRIC 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81H FORFOUR NIGHT 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR NIGHT 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81H FORFOUR PASSION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR PASSION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81H FORFOUR PRIME 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR PRIME 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81H FORFOUR PROXY 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR PROXY 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
185/50 R16 81T FORFOUR URBANSHADOW 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa ––– –––
205/45 R16 83H FORFOUR ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
205/45 R16 83V FORFOUR COOLSTYLE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
205/45 R16 83H FORFOUR EDITION ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR EDITION ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
205/45 R16 83H FORFOUR ELECTRIC ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR ELECTRIC ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
205/45 R16 83H FORFOUR NIGHT ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR NIGHT ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
205/45 R16 83H FORFOUR PASSION ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR PASSION ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
205/45 R16 83V FORFOUR PASSION 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
205/45 R16 83H FORFOUR PRIME ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR PRIME ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
205/45 R16 83H FORFOUR PROXY ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR PROXY ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
205/45 R16 83V FORFOUR PULSE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
205/45 R16 87T FORFOUR URBANSHADOW ––– ––– 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
185/45 R17 78H FORFOUR 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
185/45 R17 78H FORFOUR EDITION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
185/45 R17 78H FORFOUR ELECTRIC 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
185/45 R17 78H FORFOUR NIGHT 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
185/45 R17 78H FORFOUR PASSION 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
185/45 R17 78H FORFOUR PRIME 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
185/45 R17 78H FORFOUR PROXY 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
205/40 R17 78H FORFOUR ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/40 R17 84V FORFOUR COOLSTYLE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
205/40 R17 78H FORFOUR EDITION ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/40 R17 78H FORFOUR ELECTRIC ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/40 R17 78H FORFOUR NIGHT ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/40 R17 78H FORFOUR PASSION ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/40 R17 84V FORFOUR PASSION 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
205/40 R17 78H FORFOUR PRIME ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/40 R17 78H FORFOUR PROXY ––– ––– 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa
205/40 R17 84V FORFOUR PULSE 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
205/40 R17 84H FORFOUR URBANSHADOW 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa 36 psi2.5 bar248 kPa 36 psi2.5 bar248 kPa
225/35 R17 86Y FORFOUR COOLSTYLE ––– ––– 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
225/35 R17 86Y FORFOUR NIGHT ––– ––– 29 psi2.0 bar200 kPa 29 psi2.0 bar200 kPa
225/35 R17 86Y FORFOUR PASSION ––– ––– 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa
225/35 R17 86Y FORFOUR PULSE ––– ––– 32 psi2.2 bar221 kPa 36 psi2.5 bar248 kPa

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