To check your tyre pressure, find your car’s recommended PSI (usually on a sticker in the driver’s door frame or fuel-cap flap), check the tyres when they are cold, unscrew the valve cap, press a pressure gauge firmly onto the valve until the hissing stops, and read the figure. If it is low, top it up with air; if it is high, let a little out. Compare against the car’s number, not the number moulded into the tyre.
That is the whole job, and it takes about three minutes once you have done it once. Nobody teaches you this in a driving lesson, because lessons are about passing the test, but it is one of the first things you will actually need the week you get your own car. Below I will show you exactly where to find your figures, how to use the forecourt air machine without panicking, what the dashboard warning light means, and why the Highway Code treats correct pressure as a legal requirement rather than a nice-to-have. I am writing this the way I would talk a newly-passed pupil through it from the passenger seat.
How to check your tyre pressure step by step
Here is the full routine. Do it on all four tyres (and the spare, if you have one).
- Park somewhere safe and level, engine off, handbrake on. A petrol-station forecourt or your own driveway is ideal.
- Check when the tyres are cold. That means before you have driven, or after no more than about two miles of gentle driving. Air expands as it heats, so a warm tyre reads higher than it really is.
- Unscrew the little valve dust cap and keep it somewhere you will not lose it (pocket, not the floor).
- Press the gauge squarely onto the valve stem until the hissing stops. If it keeps hissing, you are at an angle – straighten up and push firmly.
- Read the pressure. A digital gauge or the forecourt display gives you a clear number in PSI or bar.
- Adjust to match your car’s figure. Too low, add air a little at a time and re-check. Too high, press the small pin in the centre of the valve for a second to release a puff, then re-check.
- Screw the dust cap back on, and repeat on the next tyre.
The Highway Code (Annex 6) is blunt about this: tyres “MUST be correctly inflated to the vehicle manufacturer’s specification for the load being carried,” and it tells you to check them weekly, before your journey, when the tyres are cold. So this is not fussiness. It is written into the rules of the road.
What tyre pressure should my car be? (finding your PSI)
Your correct tyre pressure is set by the car manufacturer, not the tyre maker, and you will find it in one of these three places:
- A sticker (placard) inside the driver’s door frame – open the door and look at the pillar or the edge that is hidden when the door is shut. This is the most common spot.
- The fuel-filler flap – a small sticker where you put the petrol in.
- The owner’s handbook – in the glovebox, under “tyre pressures” or “wheels and tyres.”
That sticker usually lists two figures: a normal/”comfort” pressure for everyday driving with one or two people, and a higher “fully laden” pressure for when the car is packed with passengers and luggage. For a normal solo drive, use the standard figure. Loading up for a holiday? Use the higher one.
Do not use the number printed on the tyre sidewall. That is the tyre’s maximum safe pressure, not what your car should run at, and it is almost always too high.
If you cannot find any of these, most tyre retailers (Kwik Fit, National, Halfords and others) have a free “search by registration” tool on their websites that returns the manufacturer’s recommended pressures for your exact car. Punch in your reg and it tells you the numbers.
Should tyre pressure be 32 or 34 PSI?
There is no single right answer, because it depends entirely on your car and how loaded it is. That said, most small and medium petrol cars sit somewhere in the 30 to 35 PSI range for normal driving, which is why “32 or 34” comes up so often. As a rough guide only:
| Vehicle type | Typical normal PSI (front/rear) |
|---|---|
| Small hatchback (e.g. city car) | 30 to 33 PSI |
| Medium family car | 32 to 35 PSI |
| Larger car / small SUV | 33 to 38 PSI |
| Fully loaded (holiday, 4+ people) | Often 3 to 6 PSI higher than normal |
Treat that table as a sanity check, never as gospel. Always use the exact figure on your car’s own sticker – two cars that look identical can carry different tyres and different recommended pressures.
What should the tyre pressure be on a Ford Fiesta?
A Ford Fiesta is one of the most common first cars in the UK, and most recent models call for roughly 32 to 36 PSI depending on the engine, wheel size and how loaded the car is. The exact figures for your particular Fiesta are on the sticker in the driver’s door frame or on the fuel-filler flap, and Ford lists them in the handbook – always go by those rather than a generic number, because a 1.0 EcoBoost on small wheels and a bigger-engined version can differ.
What is the tyre pressure for a Skoda Fabia?
The same rule applies to a Skoda Fabia: most versions sit in the region of 32 to 38 PSI for normal use, with a higher figure for a fully laden car, but the correct numbers for your model year and wheel size are printed on the car’s own placard (driver’s door pillar or fuel flap). Skoda, like every manufacturer, tailors the figure to the specific tyre and load, so check yours rather than trusting a round number online.
How to check tyre pressure at a petrol station
The forecourt air machine is the easiest option if you do not own a gauge, and most drivers use it. Here is how not to fumble it:
- Park with the machine’s hose reaching all four tyres. The hose is longer than it looks, but you may need to shuffle the car once.
- Set your target pressure using the +/- buttons on the machine. Enter the PSI (or bar) from your car’s sticker.
- Unscrew the valve cap and push the nozzle firmly onto the valve. The machine reads the current pressure and beeps or clicks as it inflates or lets air out to hit your target.
- Wait for the beep that tells you it has reached the set pressure, then pull the nozzle off and cap the valve.
- Repeat on each tyre, then re-set the machine if front and rear pressures differ.
Two practical notes. Forecourt machines are sometimes coin-operated (often around £1, though many are free), so have a coin ready. And because the machine sets a fixed target, it is more forgiving than a hand gauge – it stops itself, so you cannot easily over-inflate.
Which petrol stations have tyre pressure machines?
Most larger fuel stations with a forecourt shop have an air machine, usually near the car-wash or the edge of the forecourt – the big supermarket filling stations (the ones attached to large stores) and motorway service areas are a safe bet. Smaller roadside stations sometimes do not, so if you are making a special trip, a large supermarket forecourt is your best chance. Many tyre-fitting branches and garages will also check and inflate your tyres for free if you ask.
How to check tyre pressure at home without a machine
You do not need a forecourt at all. A cheap digital tyre pressure gauge (a few pounds from any motor factor or the same shops that sell bulbs and wipers) lets you check pressures on your own driveway in minutes. To top the tyres up at home you also need a pump – either a foot pump or a 12V electric inflator that plugs into the car’s power socket. Check with the gauge, inflate with the pump, re-check. The one thing you cannot do reliably is judge pressure by eye or by kicking the tyre: a tyre can be 10 PSI down and still look fine, which is exactly why a gauge matters.
How do I check tyre pressure on the dashboard?
Many cars built in the last decade have a Tyre Pressure Monitoring System (TPMS) that shows pressures or warns you on the dashboard. On a lot of models you scroll through the instrument-cluster menu (using the steering-wheel buttons) to a “tyre pressure” screen; on others, the system simply lights a warning symbol when a tyre drops too low. On a Ford Fiesta, for example, you navigate the driver-information display to the tyre-pressure or vehicle-settings menu to see the reading or reset the system after inflating.
A word of caution, though: TPMS is a backstop, not a substitute for a proper check. Many systems only warn you once a tyre is already significantly under-pressure, and “indirect” systems (which infer pressure from wheel-speed sensors) do not show an actual PSI figure at all. So use the dashboard as an early-warning light, but still put a gauge on the valves regularly.
What does the tyre pressure warning light mean?
The tyre-pressure warning light – usually an amber horseshoe shape with an exclamation mark – means at least one tyre has lost enough pressure for the system to flag it, or the system needs resetting. Do not ignore it. Find somewhere safe, check all four tyres with a gauge, and inflate whichever is low to the correct figure. If it keeps coming back on after you have set the pressures correctly, you may have a slow puncture or a faulty sensor and it is worth getting it looked at.
Can I drive with low tyre pressure?
You can physically drive on a slightly soft tyre, but you should not, and a badly under-inflated tyre is genuinely dangerous. Low pressure means more of the tyre drags on the road, which lengthens your braking distance, makes the steering vague, causes the tyre edges to wear out fast, and builds up heat that can lead to a blowout at speed. It also costs you money: soft tyres increase rolling resistance, so the engine works harder and you burn more fuel.
There is a legal dimension too. Driving a vehicle in a dangerous condition – which badly under-inflated or worn tyres can amount to – carries serious penalties. According to gov.uk, you “can be fined up to £2,500, be banned from driving and get 3 penalty points for driving a vehicle in a dangerous condition.” If a tyre is flat or the warning light is on, the safe move is to stop, check it, and either inflate it or change it for the spare before you carry on.
Tyre pressure and tyre condition: the monthly walk-round
Pressure is only half of tyre safety. While you are down at the wheels, glance over the tread and sidewalls too. Under UK law, cars, light vans and light trailers MUST have a tread depth of at least 1.6mm across the central three-quarters of the breadth of the tread and around the entire circumference (Highway Code, Annex 6). Below that, the tyre is illegal, and our guide to the tyre tread depth law and the penalties explains what that costs per tyre.
Here is the quick reference to build into a monthly check:
| Check | What to look for | Why it matters |
|---|---|---|
| Pressure | Matches the door-sticker PSI, checked cold | Braking, grip, fuel, blowout risk; a legal requirement to inflate correctly |
| Tread depth | At least 1.6mm across the central 3/4, all the way round | Below 1.6mm the tyre is illegal |
| The 20p test | Push a 20p into the tread groove; if the coin’s outer band is hidden, you are above the limit | A fast roadside tread check with no gauge |
| Sidewalls | No cuts, bulges, cracks or embedded screws | A bulge can signal internal damage and blowout risk |
| Even wear | Wearing flat across the width | Wear in the middle suggests over-inflation; wear on both edges suggests under-inflation |
The MOT checks tread and tyre condition once a year, but that is only a snapshot – tyres can drop below the limit long before your next test, so the monthly glance is on you.
Why correct tyre pressure matters (safety and fuel)
Getting pressures right is one of the highest-value five-minute jobs on a car. Correctly inflated tyres:
- Stop you shorter. The right pressure keeps the correct patch of rubber on the road, so braking and grip are at their best – which matters most in the wet, when building your driving confidence depends on the car doing what you expect.
- Steer predictably. Soft tyres feel vague and heavy; over-hard tyres feel skittish and skip over bumps.
- Last longer. Wrong pressures wear tyres unevenly and shorten their life, so you replace them sooner.
- Save fuel. Under-inflated tyres increase rolling resistance and push up your fuel bills – a real saving when you are already juggling the running costs of a first car and insurance.
None of this is complicated once someone has shown you, which is really the theme of your first months on the road: a stack of small, practical skills that lessons never covered. If you have just passed and want real-world confidence with motorway, night and bad-weather driving, a post-test course such as the Pass Plus scheme is built for exactly that stage.
And if you are not there yet, still working towards your test, the fastest route for a complete beginner is usually a structured intensive course. Our Provisional intensive driving course is designed for people starting from scratch, and you can see how our intensive courses work before you commit. When you are ready, book your course and we will get you test-ready with an approved instructor. Knowing your way around your own tyres is simply part of the same picture: a safe, confident driver who looks after the car.
Frequently Asked Questions
How do I check my tyre pressure?
Find your car’s recommended PSI on the sticker in the driver’s door frame, fuel-filler flap or owner’s handbook. With the tyres cold, unscrew each valve cap, press a pressure gauge firmly onto the valve until the hissing stops, and read the figure. Add air if it is low or release a little if it is high, then re-check and refit the cap. Repeat on all four tyres.
What tyre pressure should my car be?
Whatever the car manufacturer specifies – not the maximum figure moulded into the tyre. You will find the correct PSI on the placard inside the driver’s door frame or on the fuel flap, with a normal figure for everyday driving and a higher one for a fully loaded car. Most small and medium petrol cars sit around 30 to 35 PSI, but always use your own car’s exact number.
Should tyre pressure be 32 or 34 PSI?
It depends on your specific car and how loaded it is, so there is no universal answer. Many small and medium cars fall in the low-to-mid 30s PSI, which is why those figures come up, but the only figure that matters is the one on your car’s door sticker or in the handbook. Set it to that.
Can I drive with low tyre pressure?
You can, but you should not. Low pressure lengthens braking distances, makes handling vague, wears the tyre out faster, wastes fuel and raises the risk of a blowout. A badly under-inflated tyre can count as driving in a dangerous condition, which gov.uk says can bring a fine of up to £2,500, penalty points and a driving ban. Stop, check and inflate before carrying on.
How do I check tyre pressure at a petrol station?
Park so the air hose reaches all four tyres, set your target PSI on the machine using the +/- buttons, unscrew each valve cap and push the nozzle onto the valve. The machine inflates or lets air out to your set figure and beeps when done. Cap the valve and repeat on each tyre. Have a coin ready, as some machines charge a small fee.
How often should I check my tyre pressure?
The Highway Code advises checking weekly, before your journey, when the tyres are cold. At the very least, check them once a month and always before a long trip. Tyres lose a little air naturally over time, so a regular quick check keeps you safe, legal and running efficiently.
What is the legal minimum tyre tread depth in the UK?
For cars, light vans and light trailers the legal minimum is 1.6mm of tread across the central three-quarters of the tyre’s breadth and around the entire circumference (Highway Code, Annex 6). Below that, the tyre is illegal. Many drivers replace tyres before that limit for safety, but 1.6mm is the legal line the MOT and police enforce.