Urgently Need a New Tyre? 24 Hour Emergency Mobile Tyres in Bristol
Which faults cannot wait, what the MOT manual calls dangerous, and how Rapid brings a new tyre to you, day or night.
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A tyre does not have to be flat to be dangerous. A bulge, a deep cut or a bald patch can fail without warning, and you may only notice when the car already feels wrong.
If you urgently need a new tyre, this guide shows which faults cannot wait, what the MOT manual calls dangerous, and how Rapid Mobile Tyres brings 24 hour emergency mobile tyres to you in Bristol.
When Do You Urgently Need a New Tyre?
You urgently need a new tyre when it has structural damage: a bulge, a lump, a tear, exposed cords or a deep cut.
Use the table below to sort the fault. Anything in the first row means you stop driving and call a fitter.
| Group | Examples | What to do |
|---|---|---|
| Replace now | Bulge, lump, tear, exposed cords, lifted tread | Do not drive; call a fitter to you |
| Replace soon | Deep cut, many scratches, cracks, tread near the limit | Get it checked the same day |
| Check | Shallow scuff, low pressure | Inflate to the handbook figure, then watch it |
Michelin calls a bulge one of the most alarming signals and advises an urgent professional check. It says a bulge means damage to the carcass ply under the rubber, which can lead to sudden pressure loss (page updated 8 September 2026).
Michelin also says a deep cut can damage the carcass ply, so you must replace the tyre. Cracks signal ageing, and a professional should examine many or deep scratches.
What Does the MOT Manual Call Dangerous?
The MOT manual treats a bulge, lump, tear or exposed cord as a dangerous defect, and it treats a cut that reaches the cords as a major defect.
The manual's defect categories define a dangerous defect as a direct and immediate risk to road safety, and a major defect as one that may affect safety or put other road users at risk. Either one fails the test (manual updated 1 June 2026).
| Tyre fault | MOT category | What the manual says |
|---|---|---|
| Bulge, lump or tear | Dangerous | Separation or partial structural failure, including lifted tread rubber or exposed or damaged cords |
| Cut reaching ply or cord | Major | Cord visible without touching the tyre, or a cut over 25mm that shows cords when opened |
| Tread below the legal depth | Dangerous | Under 1.6mm across the central three-quarters of the tread and around the circumference |
| Damaged or misaligned valve | Dangerous | Only where it is likely to cause sudden deflation |
| Tyre badly seated on the rim | Major | The tyre does not sit correctly on the wheel |
| Different sizes or structures on one axle | Major | For example, radial and cross-ply tyres on the same axle |
| Obviously under-inflated | Minor | The only pressure-related tyre defect in the manual |
The manual's cut limit is 25mm or 10% of the section width, whichever is greater. A tester applies it on the day, so treat any cut near cord depth as a reason to call a fitter.
These categories come from section 5.2.3 of the MOT inspection manual for cars. The manual does not say whether you may drive a failed car, so do not treat a fail as a green light.
How Do You Check a Tyre in Two Minutes?
Look at both sidewalls, the tread and the valve with a torch, and check the tyre again after you roll the car forward.
| Check | How | What fails |
|---|---|---|
| Sidewalls | Look at the outer and inner sidewall with a torch | Any bulge, lump or tear |
| Cords | Look for fabric or cord showing | Any exposed cord |
| Cuts | Measure the cut with a ruler | Over 25mm (or 10% of section width, if greater) and showing cords when opened |
| Tread | Push a 20p coin into the main grooves | Under 1.6mm |
| Valve | Look for a bent or damaged valve | A valve likely to cause sudden deflation |
Roll the car forward a little and look again. A public UK forum thread from 2017 describes a bulge that showed only at certain wheel positions.
Michelin says a bulge can form on the inner sidewall, so it may not show from the outside. Abnormal vibration is a common symptom.
Check pressures when the tyres are cold, the Highway Code says, because warm tyres can give misleading readings. It also says to check weekly and before a journey.
Can You Drive to a Garage, or Should a Fitter Come to You?
A fitter should come to you when the tyre shows a bulge, cords or lifted tread, because driving risks a sudden failure.
| What you see | Drive on it? | Best move |
|---|---|---|
| Bulge, cords or lifted tread | No | Call a fitter to your location |
| Flat tyre | No | Stop safely and call a fitter |
| Deep cut or deep scratch | Not until a professional says it is safe | Ask a fitter to look |
| Low pressure, no damage | Only as far as an air pump | Inflate to the handbook figure |
The Highway Code covers a burst tyre. Keep control, grip the steering wheel firmly and let the vehicle roll to a stop at the roadside, it says in Annex 6 (updated 22 October 2025).
For a flat, stop as soon as it is safe. Change the tyre only if you can do so without risk to yourself or others, and otherwise call a breakdown service.
Michelin says you cannot repair a sidewall puncture or cut, because the sidewall needs its flexibility. A technician may repair a small puncture in the tread, as the guide to flat tyre puncture repair explains.
What Happens in the First Hour After You Call Rapid?
You tell Rapid where you are and what you see, a technician drives to you, and the new tyre goes on where the car stands.
Rapid Mobile Tyres runs 24 hours a day, 7 days a week, including bank holidays. Rapid says its technician usually arrives in 45 to 60 minutes, and the same window applies at night.
Traffic, technician availability, tyre availability and location can change that, so ask for a live arrival time. Read more about emergency mobile tyre fitting.
- 1
Call. Call or WhatsApp 0117 205 5494. You call Rapid directly.
- 2
Choose. Rapid asks for your tyre size, and you choose the brand or range on the call.
- 3
Fit. Rapid says most single car tyre replacements take 20 to 30 minutes from arrival.
- 4
Finish. The technician tightens the wheel nuts to specification and checks all four tyre pressures.
An emergency fit includes wheel balancing, a new valve and removal of the old tyre, Rapid confirms. Rapid also resets the tyre pressure warning light and gives you an invoice with the tyre details.
What Should You Tell the Fitter?
Tell the fitter where you are and exactly what you see, using words such as bulge, cord, cut or flat.
| Detail | What to say |
|---|---|
| Location | Road name, nearest junction or a landmark |
| Tyre size | The figures on the sidewall, for example 205/55 R16 |
| The fault | Bulge, cut, exposed cord, flat or slow leak |
| Where it is | Which wheel, and whether it is safe to stand |
| Locking nut key | Whether you have it |
If the key is missing, Rapid says its technician can remove a locking wheel nut on site. For a full call script, read the guide to emergency tyre fitting.
Do You Need One New Tyre or a Pair?
One tyre often does the job when the matching tyre has similar tread, and a pair is better when the gap is large.
Rapid says the technician checks the tread on the matching tyre and advises on a pair. Read more about the new tyre Rapid fits in emergency tyres 24/7.
Size and structure matter too. The MOT manual rates different sizes, or different structures such as radial and cross-ply, on one axle as a major defect.
Which 24 Hour Emergency Mobile Tyres Does Rapid Fit?
Rapid fits new tyres for cars, SUVs and vans, and says it holds every tyre size, including run-flat, specialist and EV-rated tyres.
Rapid's site lists Michelin, Continental, Pirelli, Bridgestone, Goodyear and Dunlop. Rapid says every emergency tyre is new, and it fits winter or all-season tyres if you ask.
See mobile car tyre fitting and SUV tyre fitting for vehicle details. Rapid also covers mobile tyre fitting in general.
How Does Rapid Help with an Urgent Tyre in Bristol?
Rapid fits tyres at your home, workplace or roadside across Bristol and the surrounding area, 24 hours a day, including motorways.
Rapid covers Bristol, Bath, Newport, Weston-super-Mare and Chepstow. Check the areas Rapid covers for your town.
The base is at Ryeleaze, Shirehampton, Bristol BS11 9FN, United Kingdom. Rapid takes cash or online transfer.
Searching for emergency mobile tyres near me? Call or WhatsApp 0117 205 5494, email info@rapid-tyres.com, or use the contact page.
FAQs About an Urgent New Tyre
Can I drive with a bulge in my tyre?
No. Michelin advises an urgent professional check because a bulge can lead to sudden pressure loss. Call a fitter to your location instead of driving.
Can you repair a bulge or sidewall cut?
No. Michelin says you cannot repair sidewall punctures or cuts, and a bulge means damage to the carcass ply. The tyre needs replacing.
Will a damaged tyre fail the MOT?
Yes. The MOT manual rates a bulge, lump or exposed cord as dangerous and a cut reaching the cords as major. Either one fails the test.
Can I get a new tyre at night?
Yes. Rapid works 24 hours a day, 7 days a week, including bank holidays, with the same usual 45 to 60 minute arrival window.
Can a mobile fitter work on a motorway?
Rapid says yes, it fits tyres on motorways too. Get safe first, and read the guide to emergency tyre fitting for who to call first.
Do I need one tyre or two?
One tyre often suffices if the matching tyre has similar tread. Rapid says the technician checks the tread and advises on a pair.
Urgently Need a New Tyre?
Rapid Mobile Tyres fits new tyres at your home, workplace or the roadside, 24/7 across Bristol and the surrounding area.