24 Hour Mobile Tyre Change on the M4
Flat tyre, puncture or blowout on the M4? We come to you anywhere across J1 to J49, 24 hours a day, change the wheel or supply a tyre, and get you moving, with a fixed price agreed before we roll.
- Fixed price first
- Hard shoulder & refuges
- Cars, vans & 4x4s
- 24/7/365
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CityGrip provides 24/7 mobile tyre change on the M4, covering J1 to J49 including the hard shoulder and the emergency refuge areas on the smart-motorway sections. We fit your spare, supply and fit a replacement tyre if you have no spare, deal with locking wheel nuts and seized wheels, or recover the vehicle if the tyre cannot be changed safely on a live carriageway. Motorway mobile tyre change runs from £250 to £750 depending on the tyre and vehicle, with the exact price agreed before we set off. Call 07960 200253 for a mobile tyre fitter near you on the M4.
The M4 is the main artery west from London to Heathrow, the Thames Valley, Bristol and South Wales, and a flat tyre on the all-lane-running section through the Heathrow corridor leaves you nowhere safe to stop. Our tyre vans cover the London and Thames Valley stretch directly, and our national network handles the western end, so we can reach your junction and get the wheel changed.
M4 mobile tyre FAQs
Do you cover the M4 smart motorway section near Heathrow?
Yes. The M4 between Junctions 3 and 12 runs all lanes with no permanent hard shoulder. We cover it, but if a tyre goes there, head for an emergency refuge area or the next exit if you can, and call 999 if you stop in a live lane.
Do you cover the M4 into Wales and the Brynglas Tunnels?
Yes, through our national operator network we cover the M4 across the Severn into South Wales, including the Newport stretch and the Brynglas Tunnels, which are a serious bottleneck where a stopped vehicle causes long delays.
Can you help if I break down in the Brynglas Tunnels on the M4?
The Brynglas Tunnels at Newport are a notorious bottleneck and a very dangerous place to stop. If you break down inside, follow the tunnel's emergency signage and the tunnel patrol will help move you to a safe point, then we change the tyre or recover you once you are clear.
How much is a mobile tyre change on the M4?
Motorway mobile tyre change runs from £250 to £750. It costs more than an ordinary roadside tyre change (from £90) because it is done on a live, high-speed carriageway with the correct warning equipment and safety procedures. A common tyre on a standard car sits at the lower end; a large, low-profile, run-flat or 4×4 tyre supplied at night sits at the upper end. We agree the exact figure on the phone before we set off.
Can you fit a tyre if I have no spare near J1 Chiswick on the M4?
Yes. Most new cars carry no spare, only a sealant kit, which cannot fix a sidewall cut or a blowout. We can supply and fit a matching tyre at the roadside near J1 Chiswick where it is safe to do so, or recover you towards J10 Reading if it is not.
Should I change the tyre myself between J1 Chiswick and J32 Cardiff Gate on the M4?
No. Changing a wheel anywhere on the M4, whether that is up by J1 Chiswick or down towards J32 Cardiff Gate, is one of the most dangerous things you can do on a motorway. Get everyone out of the left-hand doors and behind the safety barrier, and call us. If you are stuck in a live lane and cannot get out safely, stay belted in with your hazards on and call 999.
How do I tell you exactly where I am on the M4?
Give us 'M4', the last junction you passed (for example J17 Leigh Delamere), your direction of travel, and the number on the nearest blue marker post or the driver location sign on the verge. That pins your position to within about 100 metres so we reach you quickly.
Can you change tyres on vans and 4x4s on the M4?
Yes. We change tyres on cars, vans, 4x4s and light commercials anywhere along the M4, and carry the equipment for larger wheels, locking nuts and wheels seized to the hub.
My car has run-flat tyres, do I still need you on the M4?
Run-flats let you keep going a limited distance at reduced speed, typically around 50 miles at up to 50mph, but that is a get-you-off-the-M4 measure, not a repair, and many run-flats cannot be repaired at all once run flat. Leave at the next exit if you safely can, then call us to supply and fit a replacement or recover you.
My tyre pressure warning light has come on near J4b M25, can I carry on?
Treat it as a warning that something is wrong. A slow puncture can become a blowout at M4 speeds. Ease off, leave at the next exit if you can do so safely and check the tyre. If it is going down, do not carry on, get somewhere safe and call us.
What is the legal tyre tread depth for driving the M4?
The legal minimum is 1.6mm across the central three-quarters of the tread and around the whole circumference, the same limit anywhere in the UK. Below that you risk a fine and penalty points for each illegal tyre, and grip and wet braking fall away long before you reach the limit. Any tyre we supply and fit is legal and correctly matched to your vehicle.
What's the nearest service station on the M4 if I break down?
The M4 has service areas at Heston (near Junction 2-3), Reading (Junction 11-12), Membury (Junction 14), Chieveley (Junction 13), Leigh Delamere (Junction 17), Severn View (Junction 21), Magor (Junction 23a) and Cardiff Gate (Junction 30). If a tyre cannot be changed safely on the carriageway, we take you to whichever is nearest. Mobile tyre change on the M4 costs £250 to £750 depending on the job, the same motorway pricing from London through to South Wales.
Updated July 2026. Lines open 24 hours. Call 07960 200253 for a mobile tyre change on the M4 now.
Flat tyre on the M4? Get behind the barrier and call us.
24/7 mobile tyre change on the M4, £250 to £750, with a fixed price agreed before we roll.