A puncture rarely happens at a convenient time. It is often on the school run, outside work, on a dark country road or just as you are heading for Gatwick. This roadside puncture emergency guide gives you the clear next steps: protect yourself first, avoid making the damage worse, and get the right tyre help to your location.
A tyre that is losing pressure can make a vehicle feel unsettled, pull to one side or produce a repeated thumping sound. If that happens, do not try to push on until you reach home or the next garage. A few extra miles on a flat tyre can turn a repairable puncture into a ruined tyre, damaged wheel, or both.
Stop safely before you inspect the tyre
As soon as you suspect a puncture, reduce speed gradually. Keep a firm grip on the steering wheel, avoid sharp braking and look for the safest practical place to stop. A lay-by, car park or quiet side road is preferable to a narrow verge or live lane.
Put your hazard lights on once you are stationary. Apply the handbrake, select park or first gear, and make sure passengers leave the vehicle only if it is safe to do so. On a motorway or dual carriageway, safety comes before the tyre. Move as far from traffic as possible, get behind the barrier where there is one, and arrange appropriate breakdown support if the vehicle cannot be safely attended at the roadside.
Do not kneel beside the car near moving traffic to investigate a tyre. If the location feels unsafe, give the recovery or tyre specialist your precise location and wait in a safer position.
How to tell whether you have a puncture
You do not need to be a tyre expert to spot the common signs. A visibly low or flattened tyre is the obvious one, but a slow puncture may be less dramatic. Look for one side of the vehicle sitting lower than the other, a warning light on the dashboard, or a tyre that appears soft at the bottom where it meets the road.
If it is safe to look, check for a nail, screw, sharp object or cut in the tread. Do not pull an object out. It may be slowing the loss of air, and removing it could leave the tyre completely flat within seconds.
Also look at the tyre sidewall. Damage here matters. A bulge, deep split, exposed cords or a sidewall cut normally means the tyre cannot be repaired safely. A tyre that has been driven flat may look intact from the outside but can have internal damage too. That is why a professional inspection is the sensible call.
A slow puncture is still an urgent problem
A tyre that needs air every few days is not simply an inconvenience to manage. It could be a small tread puncture, a leaking valve, corrosion around the wheel rim or a damaged tyre bead. Driving on it risks a sudden pressure loss at speed.
If your tyre pressure monitoring system has warned you more than once, treat it as a fault that needs checking. Inflate it only to the vehicle manufacturer’s recommended pressure if you must move the vehicle a short, safe distance. Do not overinflate it in the hope that it will last longer.
Should you use a spare wheel or tyre repair kit?
It depends on the vehicle, the type of damage and where you are stranded. Many newer cars have no full-size spare at all. They may have a space-saver wheel, a sealant kit, or nothing more than a tyre pressure monitor and a handbook.
A space-saver can be useful, but it is temporary. It will have a lower speed limit, must be fitted correctly, and should not be treated like a normal tyre. If you are unsure how to jack the vehicle safely, cannot loosen the wheel nuts, or are on uneven ground, it is better not to attempt it.
Sealant kits can help with certain small tread punctures, but they are not suitable for every problem. They will not fix a torn sidewall, a damaged rim, a tyre that has come off the wheel, or a large hole. The sealant can also make a later repair more difficult, depending on the product and the tyre’s condition. Check your handbook before using it, rather than relying on guesswork.
Never work beneath a vehicle supported only by a jack. Keep children and passengers clear, use the correct jacking point, and do not change a wheel where passing traffic puts you at risk.
When you must not drive on a punctured tyre
There are occasions when the right decision is simple: do not drive the car. Stop and arrange help if the tyre is flat, the sidewall is damaged, the wheel is visibly bent, or you can hear the tyre scraping against the road.
The same applies if the steering has become heavy, the vehicle is pulling severely, or you have had a high-speed blowout. Continuing to drive can affect handling and braking, particularly in wet conditions or with a loaded family car or light commercial vehicle.
Run-flat tyres are the main exception, but only within their specific limits. A run-flat tyre may allow limited travel after pressure loss, usually at a reduced speed and for a limited distance. Those limits vary by manufacturer and the tyre may still need replacing after inspection. If you do not know whether your vehicle has run-flats, assume it does not and avoid driving on the damaged tyre.
What to tell a mobile tyre technician
A fast response starts with useful information. When you call for roadside tyre assistance, have your registration number, exact location and a brief description of the issue ready. Mention whether the tyre is completely flat, whether you can see damage, and whether the vehicle is in a safe place.
It also helps to say if your car has locking wheel nuts. These are designed to prevent wheel theft, but a missing key, rounded locking nut or seized wheel bolt can stop a straightforward tyre change. A specialist with locking wheel nut removal equipment can deal with the problem without sending you off to a garage or leaving the vehicle stranded.
For vans and light commercial vehicles, tell the technician the tyre size if you know it and whether the vehicle is carrying a load. Correct load-rated tyres matter, and the right replacement needs to be fitted for the vehicle’s work.
A mobile tyre service can assess whether the puncture is safely repairable or whether a replacement is needed, then fit the tyre where you are. That can be the roadside, your driveway, workplace or car park. For drivers around Leatherhead, Guildford, Dorking, Reigate, Gatwick and Horsham, this avoids the risky or inconvenient job of trying to reach a tyre garage on a compromised wheel.
Can a puncture be repaired?
A repair is possible only when the tyre meets safety criteria. In broad terms, the puncture needs to be in the central tread area, small enough to repair, and the tyre must not have been driven while flat. The tyre’s structure, wear level and previous repairs also need checking.
A nail in the middle of a healthy tyre may be repairable. A screw near the shoulder, a split sidewall or a tyre run at very low pressure for several miles is a different situation. The cheapest option is not always the safe option, so a trustworthy technician should explain why a repair is or is not appropriate.
Do not rely on an external plug as a permanent roadside fix unless a qualified professional has assessed the tyre. It might hold air temporarily, but it does not replace a proper inspection and internal repair where one is safe to carry out.
Prevent the next roadside tyre emergency
Punctures cannot always be avoided, especially after roadworks, storms or debris on busy routes. A few simple checks reduce the chances of being caught out. Check tyre pressures at least monthly and before a long journey, including the spare if you have one. Use the pressure figure listed for your car, not the maximum pressure printed on the tyre wall.
Check tread, sidewalls and valve caps while you are there. Look for uneven wear, cuts, nails and bulges. Uneven wear can point to incorrect alignment, worn suspension parts or repeated underinflation. Dealing with it early saves money and gives you better grip when the road is wet.
Keep your locking wheel nut key somewhere you can find it. The glovebox, boot tool compartment or a labelled pouch are sensible choices. If you have recently bought a used car, confirm the key is present before you need it.
When a puncture stops your day, do not take chances with your safety or your wheels. Get the vehicle secure, share your location clearly, and let a tyre specialist bring the right equipment to you. #EmergencyMike and the Emergency Tyres 24/7 team are ready to get Surrey and Sussex drivers moving again, day or night.
