A puncture is one of the most common motoring emergencies — and one where a calm, measured response makes all the difference. This guide covers exactly what to do, whether you are on a quiet country road in Snowdonia or on the A55 expressway.
Recognising a Puncture While Driving
The first signs of a puncture are often subtle — a slight pull to one side, a change in steering feel, or unusual vibration. A sudden blowout at speed is more dramatic, with a loud bang followed by immediate handling changes.
Modern vehicles with tyre pressure monitoring systems (TPMS) will alert you when pressure drops significantly — but the warning may only appear when the tyre has already lost 25% or more of its pressure. Do not wait for a warning light before checking your tyres.
Step 1 — Stay Calm and Control the Vehicle
If you experience a sudden blowout at speed, resist the instinct to brake sharply or swerve. Keep both hands firmly on the steering wheel, ease off the accelerator gradually, and allow the vehicle to slow naturally. Steer smoothly toward the left.
Step 2 — Move to Safety
Signal and move to a safe position as quickly as possible:
- On a motorway or dual carriageway — move to the left lane and onto the hard shoulder or emergency refuge area
- On a single carriageway road — aim for a gateway, car park, lay-by or wide verge
- In a town or village — pull into a side road or car park away from main traffic
Switch on your hazard lights as soon as you begin to slow down.
Step 3 — Get Out Safely
Once stopped, switch off the engine. On a motorway hard shoulder, always exit via the left-hand passenger door and move well clear of the carriageway — wait behind the barrier, never between your vehicle and moving traffic. On other roads, stay on the verge or pavement.
Step 4 — Call Mobi Tyre
Call 07768 491888 from a safe position. We operate 24 hours a day across North Wales and border England including all major routes — the A55, A5, A483, A470 and surrounding roads. Give us your location and we will be with you as quickly as possible.
Do You Have a Spare Wheel?
Many modern vehicles no longer carry a full-size spare. Some have a space-saver spare (for temporary use only, with strict speed and distance limits), some have a tyre inflation kit, and vehicles fitted with run-flat tyres may have no spare at all. Know what your vehicle carries before you need it — check your owner’s handbook.
Should You Change the Wheel Yourself?
Changing a wheel is possible in suitable conditions but carries significant risk at busy or poorly lit roadsides. On a motorway hard shoulder, never attempt to change a wheel — call for professional assistance and wait safely behind the barrier.
After Your Puncture
Once your tyre has been repaired or replaced, have the incident assessed. If you drove on a flat or significantly under-inflated tyre, the wheel may have suffered damage that is not immediately visible. A qualified technician should inspect it before long-distance driving resumes.
