A flat tyre is one of the most common roadside incidents in the UK, and knowing how to change one safely can save you hours of waiting and a significant recovery bill. However, changing a tyre is not always appropriate — location, traffic conditions, and the type of tyre all affect whether it is safe to attempt. This guide walks you through the complete process, from assessing whether to change the tyre yourself to the correct jacking procedure and what to do if you cannot change it safely.
Before attempting to change a tyre, assess your surroundings carefully. It is safe to change a tyre if: you are on a firm, level surface well away from moving traffic; you are in a car park, side road, or lay-by with adequate space; you have the correct equipment (spare tyre, jack, wheel brace, and locking wheel nut key if applicable); and you are physically able to do so safely. It is NOT safe to change a tyre if: you are on a motorway or dual carriageway hard shoulder — the risk from passing traffic is too high; the ground is soft, sloped, or unstable; you are on a bend or hill with limited visibility; it is dark and you have no warning triangle or high-visibility vest; or you have a run-flat tyre that does not require immediate changing. On a motorway, always call for professional recovery rather than attempting a tyre change yourself.
Before you need to change a tyre, check that your vehicle carries the following: a spare tyre in good condition and correctly inflated (check pressure every few months); a scissor jack or hydraulic jack rated for your vehicle's weight; a wheel brace (the correct size for your wheel nuts); a locking wheel nut key (stored in the boot or glovebox — do not leave it at home); a high-visibility vest; a warning triangle; a torch; and gloves. Many modern vehicles no longer carry a full-size spare — instead they have a space-saver spare (limited to 50mph and 50 miles), a tyre inflation kit (foam sealant and compressor), or run-flat tyres. Check your vehicle handbook to confirm what your car carries and understand its limitations before you need it in an emergency.
Follow these steps in order. First, move the vehicle to a safe, firm, level surface and switch on your hazard lights. Apply the handbrake and engage first gear (or Park for automatics). Place a warning triangle at least 45 metres behind the vehicle. Put on your high-visibility vest. Loosen the wheel nuts on the flat tyre by half a turn before jacking (it is much harder to loosen them once the wheel is in the air). Locate the jacking point — these are reinforced sections of the vehicle's sill, marked in the owner's manual; never jack under the sill itself or under the engine. Position the jack correctly and raise the vehicle until the flat tyre is approximately 10cm off the ground. Remove the wheel nuts fully and remove the flat tyre. Mount the spare tyre and hand-tighten the wheel nuts in a star pattern (not circular). Lower the vehicle until the tyre touches the ground but does not bear the full weight. Tighten the wheel nuts firmly in a star pattern. Lower the vehicle fully and remove the jack. Check the spare tyre pressure as soon as possible.
Correctly torqued wheel nuts are critical for safety. Under-tightened nuts can cause the wheel to work loose while driving; over-tightened nuts can stretch or snap the wheel studs and make future removal extremely difficult. Most passenger cars require wheel nuts torqued to between 80 and 120 Newton metres (Nm) — check your vehicle handbook for the exact specification. At the roadside without a torque wrench, tighten the nuts as firmly as you can by hand using the wheel brace, then have them checked and properly torqued at a tyre centre or garage as soon as possible — ideally within 50 miles. Always tighten in a star or cross pattern to ensure even seating of the wheel against the hub.
If your vehicle carries a space-saver spare (identifiable by its narrower width and often bright yellow or red colour), it is subject to strict limitations. The maximum speed is 50mph (80km/h) — do not exceed this under any circumstances. The maximum recommended distance is 50 miles, though manufacturers vary. Do not use a space-saver spare on a motorway if you can avoid it — if you must, stay in the left lane and drive at no more than 50mph. Do not fit a space-saver to the front axle of a front-wheel-drive vehicle if possible — fit it to the rear and move the rear tyre to the front. Replace the space-saver with a full-size tyre as soon as possible. Space-saver spares are not suitable for long-term use and will affect braking, handling, and stability systems.
Run-flat tyres are designed to be driven on for up to 50 miles at a maximum of 50mph after a puncture, allowing you to reach a garage safely without stopping at the roadside. If your vehicle is fitted with run-flat tyres (check the tyre sidewall for markings such as ROF, SSR, EMT, or ZP), do not attempt to change the tyre at the roadside. Instead, drive carefully to the nearest tyre centre or garage within the run-flat distance limit. Note that run-flat tyres cannot be repaired in most cases — they must be replaced. Also note that vehicles fitted with run-flat tyres typically do not carry a spare, so if you fit a standard tyre to a run-flat-equipped vehicle, the tyre pressure monitoring system (TPMS) may not function correctly.
If you suffer a tyre blowout or rapid deflation on a motorway, do not attempt to change the tyre on the hard shoulder. The hard shoulder is one of the most dangerous places in the UK — vehicles travelling at 70mph pass within metres, and the risk of being struck is extremely high. Instead: grip the steering wheel firmly, ease off the accelerator gradually, and steer to the hard shoulder or emergency refuge area. Switch on your hazard lights, exit from the left-hand door, move behind the barrier, and call for professional recovery. Black Eagle Recovery provides 24/7 tyre change and recovery services across London, the South East, Hampshire, and Dorset. Our operators will change your tyre safely or recover your vehicle to a tyre centre.
Call for professional tyre assistance if: you are on a motorway or dual carriageway; you do not have a spare tyre or your spare is also flat; your vehicle has run-flat tyres; the tyre has suffered a blowout and the wheel or tyre is damaged beyond a simple puncture; you have a locking wheel nut but cannot find the key; the vehicle is too heavy to jack safely (vans, SUVs, or vehicles with a full load); or you are not confident in the procedure. Black Eagle Recovery provides roadside tyre change services across London, the South East, Hampshire, and Dorset — call 0330 520 1620 for a clear price before we attend. We carry a range of common tyre sizes and can change your tyre at the roadside or recover your vehicle to the nearest tyre centre.
Flat tyre and need help? Black Eagle Recovery provides 24/7 roadside tyre change and recovery across London, the South East, Hampshire, and Dorset. Call 0330 520 1620 for a clear price before we attend.
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