A motorway is one of the most dangerous places to stop with a tyre failure, so safety comes before the car. Get as far left as you can, leave the vehicle by the left-hand doors, and get behind the barrier well away from traffic. Do not try to change a wheel on a live motorway, no matter how confident you feel, because passing traffic is the real danger.
The moment it happens
Your first job is to get the car to relative safety without losing control:
- Keep control. If it's a blowout, don't brake hard; ease off and steer straight.
- Get left. Aim for the hard shoulder or an emergency refuge area.
- Pull as far left as possible and turn the wheels to the left.
- Hazards on, plus sidelights in poor visibility.
Getting out safely
Once stopped, get everyone away from the carriageway as quickly and calmly as you can:
- Exit by the left-hand doors, away from traffic.
- Get behind the safety barrier and well up the verge.
- Take everyone with you; leave animals in the car unless you can keep them under proper control on the verge.
- Don't stand near the car or attempt repairs at the roadside.
Smart motorways
Many motorways now have no permanent hard shoulder. Use the orange emergency refuge areas where you can, and follow the signs and the Highway Code guidance on breakdowns. If you can't reach a refuge and the car stops in a live lane, keep your seatbelts on, hazards on, and call 999 if you can't safely get out. Where there's no hard shoulder, getting fully off the carriageway isn't always possible, which is exactly why the priority is reaching a refuge or, failing that, staying belted in and calling for help fast.
What not to do
A few instincts make a motorway breakdown far more dangerous, so it's worth knowing them in advance:
- Don't change the wheel yourself on the hard shoulder or in a live lane.
- Don't sit in the car on the hard shoulder if you can safely get out and behind the barrier.
- Don't stand in front of or beside the car, where you're between it and the traffic.
- Don't try to retrieve items from the carriageway side of the vehicle.
Calling for help and saying exactly where you are
Use the orange emergency telephone if you can reach one safely behind the barrier; otherwise use your mobile and read out the nearest blue driver location sign. Both get help to the right place far faster than trying to describe where you are.
The emergency phones are free, connect directly to a National Highways control room, and tell the operator your location automatically. Small marker posts on the hard shoulder have arrows pointing to the nearest one. Walk to it behind the barrier, and face the traffic while you talk so you can see what is coming.
If you use a mobile, look for the blue driver location signs on the verge. Each shows the road number, a letter for the carriageway and a distance figure. Reading that out tells the operator which road, which direction and which stretch you are on. National Highways can be reached on 0300 123 5000; if anyone is in danger or you are stuck in a live lane, call 999. The Highway Code's breakdown rules (274 to 287) set out the full procedure.
Whoever you speak to, have these ready: the road and direction, the location sign or junction numbers, whether you are on the hard shoulder or in a lane, the make, colour and registration, how many people are with you and whether anyone needs extra help.
If you can't get out of the car
If it is not safe to leave the vehicle, stay in it with your seatbelt fastened and the hazard lights on, and call 999. That applies if traffic is passing too close to open the doors, if there is no barrier or verge to get behind, or if you are stopped in a live lane.
The Highway Code has specific advice for disabled drivers who cannot follow the usual procedure: stay in the vehicle, keep your seatbelt on, switch on the hazard lights, and display a "help" pennant or use a mobile to call for assistance. Tell the operator you are unable to leave the car so they know you are still inside.
With children, take them out with you if you can exit safely, hold hands, and keep them well behind the barrier and away from the car; a motorway verge is not somewhere to let anyone wander. Animals should stay in the vehicle unless you can keep them under proper control on the verge, because a loose dog on a motorway is a hazard to everyone.
At night or in rain, a torch and a high-visibility vest in the boot make you far easier for the recovery crew and passing traffic to see. They cost very little and belong in every car emergency kit. Do not walk back along the hard shoulder to retrieve them from a car you have already left if traffic is heavy; safety comes before kit.
Where the tyre actually gets fitted
The car is recovered off the carriageway first, and the tyre is replaced somewhere safe: a service area car park, a nearby car park, if the site allows it, or your home. Nobody should work on a hard shoulder, and we do not. Knowing that in advance stops you waiting on the verge for a fitter who will not come to the live motorway.
- Call your breakdown provider or National Highways from behind the barrier and tell them it is a tyre failure.
- A recovery vehicle moves the car to the nearest service area, an exit-road car park, a recovery yard or your address. Even if you carry a spare, this is still the safe route; the wheel change happens off the motorway, not beside it.
- A mobile fitter meets the car there with the right tyre for the size on the sidewall. Send the size or the registration while you wait: common sizes are often on the van, and other sizes are sourced for the job.
Our emergency tyre replacement service covers exactly this, including evenings, nights and weekends when the diary allows, and our burst tyre page explains what a blowout usually does to the wheel and arch liner as well as the tyre.
Rejoining the motorway, and cutting the odds next time
When you do rejoin from the hard shoulder, build up speed on it first and merge into a suitable gap, signalling early and watching for other stationary vehicles ahead. That is the Highway Code procedure, and it applies whether a recovery crew has made the car driveable or your stop turned out to be a false alarm from a pressure warning.
Most motorway tyre failures are not bad luck. They come from a tyre that was already under-inflated, worn, old or damaged, then asked to run hot at 70 mph for an hour. A five-minute check before a long trip removes most of the risk:
- Pressures set to the loaded figure on the placard, checked cold.
- Tread comfortably above the 1.6mm legal minimum, which applies across the central three-quarters of the tread around the whole circumference.
- No bulges, cuts or cracking on the sidewalls, and nothing embedded in the tread.
- Tyres checked for age: inspect closely from five years old and look for cracking.
Our long motorway journey checklist and blowout causes and prevention cover the full routine.
Then call for help
Changing a wheel beside fast traffic is far more dangerous than waiting, which is why it's strongly advised against. Call your breakdown provider or a mobile tyre service. Our mobile fitters work from one base at Brent Cross, NW2, including evenings, nights and weekends when the diary allows. If the car is further out, call and we will tell you straight away whether we can take the job, and give you an arrival time on the call. We meet the car at the service area, the car park (if the operator agrees) or the address it has been recovered to, and fit the replacement there. We never work on the hard shoulder.
