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Tyre Puncture: What to Do When a Tyre Loses Air

Quick answerStop safely, find the leak, then get it plugged, patched or fit the spare

Tyre careTube and tubelessRoadside stepsChecked 13 Nov 2026

Close up of a car tyre tread with a steel nail stuck between the grooves, the cause of a slow tubeless puncture

A tyre puncture is a hole in the tyre that lets air out, and the safe answer is always the same: slow down, pull over, check the damage, then repair it at a tyre shop or put on the spare. Most punctures on Indian roads come from nails, screws, glass and sharp stones, and most of them sit in the tread, which a good shop can fix.

This page walks you through what to do in the first five minutes, how tube and tubeless tyres behave differently, which repairs last and which are only a stopgap, and when a tyre has to be thrown away. Use the links below for the full step by step repair guide and for choosing a kit to keep in the boot.

At a glance

  • First stepSignal, slow down gently and stop on a flat, safe spot away from traffic
  • Repairable areaTread face only; sidewall and shoulder damage means a new tyre
  • Size limit for repairHoles up to about 6 mm in the tread
  • Proper repairPatch and plug fitted from inside the tyre, after removing it from the rim
  • Roadside fixRope plug or sealant liquid, both temporary until a shop checks it
  • Run flat tyreOften rated for about 80 km at up to 80 km/h; check the car manual

Flat tyre meaning and the early warning signs

Flat tyre meaning, in plain terms: the tyre has lost so much air that the sidewall is squashed and the rim is close to the road. A puncture is the usual cause, but a leaking valve, a cracked rim or a bead that has slipped off the rim can also leave you with a flat.

On a car you will often feel it before you see it. The steering pulls to one side, the car feels heavy at low speed, or you hear a rhythmic thump from a nail hitting the road on every turn. On a bike the front feels vague in corners and the rear wobbles over speed breakers. A tyre pressure warning light on newer cars gives an early alert too.

Treat every one of these signs as a reason to slow down right away. A tyre that runs low for a few kilometres heats up and can damage its own sidewall, which turns a simple nail repair into a new tyre.

What to do in the first five minutes after a tyre puncture

  1. Hold the steering firmly, take your foot off the accelerator and brake gently. Do not brake hard on a flat front tyre.
  2. Turn on the hazard lights and pull fully off the road onto a level, hard surface. On a highway, use the shoulder well away from the lane.
  3. Put the car in gear or Park, apply the handbrake and place the warning triangle behind the car.
  4. Walk around and look at the tyre. Note where the nail or cut is, and whether the sidewall is torn or bulging.
  5. If some air remains and the nail sits in the tread face, you can pump it up and creep along to a nearby fitter. If it is fully flat or the sidewall is cut, fit the spare.
Leave a nail in place until the shop is ready. Pulling it out on the roadside usually turns a slow leak into a fast one.

Tube tyres and tubeless tyres leak in different ways

PointTube type tyreTubeless tyre
How fast air escapesUsually quickly, because the tube itself bursts or splitsUsually slowly, as the object often stays stuck in the tread
Common onOlder bikes with spoke wheels, some base model carsMost cars, scooters and bikes with alloy wheels
Typical fixPatch the tube or replace itPlug from outside for the road, patch and plug from inside for a lasting repair
Can you keep ridingNo, stop as soon as you noticeOnly slowly to the nearest shop, with air topped up

Unsure which type is fitted? Tubeless tyres say so in raised letters on the side, and the rim has a valve fixed straight into the wheel rather than a stem coming through from a tube. Our tubeless tyre guide explains how the air seal works.

Repair choices and how long each one lasts

RepairWhere it is doneLasts
Rope or string plug pushed in from outsideRoadside, home, small shopsTemporary; get it checked
Sealant liquid through the valveRoadsideTemporary; often a speed cap on the bottle
Patch and plug from insideTyre shop, tyre off the rimPermanent if the damage is within limits
Tube patch or new tubeTyre shop or roadside mechanicGood if the tyre casing is undamaged
New tyreTyre shopNeeded for sidewall, shoulder or large cuts

For the full method, including what a shop should do and what you can safely do yourself, read tyre puncture repair. To choose a roadside kit with plugs, reamer, sealant and a small pump, see the tubeless tyre puncture kit guide.

Bike tyre puncture: what is different on two wheels

A bike tyre puncture is more dangerous than one on a car because you balance on just two contact patches. A sudden loss of air in the front tyre makes steering heavy and can tuck the wheel in a corner. Ease off the throttle, avoid the front brake if you can, and let the bike roll to a stop in a straight line.

Most commuter bikes and scooters sold now use tubeless tyres on alloy wheels. With those, a nail tends to let air out gradually, and you can usually crawl to a shop. Bikes with spoke wheels normally run tubes, and a tube puncture empties the tyre within seconds; there the only safe choice is to push the bike or call a mechanic. Never ride a tube tyre flat, as the tube gets shredded and the rim can be bent.

A compact plug kit plus a pump that fits under the seat is worth carrying on long rides with tubeless tyres. After a plug, keep speeds low and get the tyre looked at from inside within a day or two.

Run flat tyre, anti puncture tyre and the puncture less tyre idea

A run flat tyre has a stiff, reinforced sidewall that carries the car even with zero air. Makers commonly rate it for about 80 km at up to 80 km/h after a puncture, but the car manual has the final limit for your vehicle. These tyres need a car with a working pressure monitor, as you may not feel the loss, and many tyre makers advise replacing rather than repairing a run flat after it has been driven flat.

An anti puncture tyre usually means a tubeless tyre with a layer of sealant applied inside at the factory or a gel added later. Small holes from nails close up as the tyre spins, so you may never notice them. They still cannot seal sidewall cuts or large gashes, and the sealant can make a later repair messier.

A puncture less tyre, sold for some cycles, electric scooters and small utility vehicles, is a solid or foam filled tyre that has no air at all. It cannot go flat, but it rides harder, weighs more and is not made for highway car use. For a normal car or bike, a good tubeless tyre at the right pressure is the practical middle ground.

When a punctured tyre must be replaced

Ask a tyre shop to inspect the tyre and replace it, not repair it, if any of these apply: the hole is larger than about 6 mm, the damage is in the sidewall or the shoulder where tread meets sidewall, there is a bulge or a cut showing cords, the tyre was driven flat for some distance, or there are two repairs close to each other.

Driving on a flat tyre crushes the sidewall between the rim and the road. From outside it may look fine, but the inner liner can be scuffed into powder and the cords weakened. That is why a careful fitter takes the tyre off before deciding. If you see grey dust or rubber crumbs inside, the tyre is done.

Also check the age of the tyre while it is off. Reading the four digit age code takes seconds; the steps are in our tyre manufacturing date walkthrough; an old, cracked tyre is not worth repairing.

Why Indian roads cause so many punctures, and how to cut them

  • Construction debris: nails, screws and wire fall off trucks near building sites. Keep to the cleaner part of the lane where you can.
  • Low pressure: a soft tyre picks up sharp objects more easily and pinches tubes over potholes. Check pressure every two weeks with the right cold pressure for your vehicle.
  • Monsoon water: flooded roads hide glass and broken drain covers. Drive slowly through water and inspect the tyres after.
  • Worn tread: thin rubber gives less protection, so replace tyres before they reach the wear bar.
  • Sharp kerbs and potholes: hitting them hard can cut the sidewall or crack an alloy rim, which leaks like a puncture.

A monthly look at each tyre, including the spare, catches embedded stones and nails before they work their way through.

All tyre puncture guides on this site

GuideRead it for
Tyre puncture repairStep by step repair, what a shop should do, home fixes
Tubeless tyre puncture kitWhat a kit contains, sealant vs plugs, how to use one
Tubeless tyreHow tubeless tyres hold air
Spare tyreFull size and space saver spares
Tyre inflatorPumps for topping up after a repair

For tyre sizes of a specific vehicle, start from the AutoTyreSize home page.

Questions owners ask

Can I drive on a punctured tubeless tyre?

Yes, but gently, and just to the closest tyre shop after you have added air. A nail in a tubeless tread usually lets air escape over hours, yet running on it while soft heats and weakens the sidewall. If the tyre is visibly flat, fit the spare instead.

How many times can a tyre be repaired?

No set limit exists, but repairs should not overlap and should all sit within the tread area. A shop will refuse when holes are too close together or the tyre has already been driven flat. Ask the shop to show you where the old repairs are before it adds a new one.

Is a rope plug a permanent fix?

No. A plug pushed in from outside seals the hole but does not seal the inner liner, which leaves a path for water to reach the steel belts. It is a stopgap to get you home, then have the tyre removed and fixed with a patch and plug from inside.

What is a run flat tyre and can I fit one to any car?

It is a tyre with a reinforced sidewall that can carry the car with no air for a limited distance. It needs a pressure monitoring system so you know you have lost air, and the ride is firmer. Fit run flats only where the car maker approves them.

Do anti puncture gels damage the tyre?

Most do not harm the rubber, but they may gum up a tyre pressure sensor unless the label calls it sensor safe. They also make a proper repair messier, as the shop must clean the gel out first. They help with small nail holes only.

My tyre keeps going soft but I see no nail. What is wrong?

Slow leaks also come from a loose or perished valve, a corroded or bent rim edge, or a tiny thorn lodged deep in a groove. Dipping the wheel in water, or spraying soapy water, reveals the bubbles. Have it traced instead of pumping it up twice a week.

Every page in this guide 2

PageQuick answer
Puncture kitPlugs, reamer, insertion needle and a pump; sealant liquid as a backup
Puncture repairTread holes up to about 6 mm can be fixed; patch and plug from inside lasts