Tire Losing Air After Hitting a Pothole - Top Causes, Fixes & What to Do

Certified Professional Automotive Mechanic – Owner and Editor of VehicleRuns

Last Updated: September 13, 2026

Safety note: Troubleshooting guidance can help you narrow down likely causes, but it cannot replace an in-person inspection. If the vehicle feels unsafe, warning lights are flashing, you smell fuel, see smoke, notice overheating, or have problems with braking, steering, or control, stop driving when it is safe to do so and have the vehicle inspected.

If a tire starts losing air right after you hit a pothole, the impact usually damaged something at the tire or wheel. The most common problems are a punctured or pinched tire, a bent wheel that no longer seals well, or a bead leak where the tire meets the rim.

The pattern of the air loss matters. A tire that goes flat within minutes points to a larger cut, cracked wheel, or badly disturbed bead. A tire that loses pressure overnight or over a day or two is more often a smaller bead leak, valve problem, or impact-related damage that did not open up all at once.

This kind of symptom is not just about low pressure. A pothole hit can also damage the wheel, shift the tire on the rim, or create a weak spot in the sidewall that may fail later. This guide helps you narrow down what to inspect first and when the damage is serious enough to stop driving.

Start with how fast the tire is losing air and what you can see on the tire and wheel. The leak pattern usually tells you whether the problem is in the tire itself, the bead area, or the wheel hardware.

What you notice	Most likely cause	What to check first	Urgency
Flat within minutes of the pothole hit	Sidewall cut or wheel crack	Inspect both sidewalls and inner rim for cuts, splits, or visible cracking	Stop driving
Pressure drops overnight, no obvious tire hole	Tire bead leak	Spray soapy water around the rim-to-tire seal	Can worsen
Rim edge looks dented or scuffed	Bent wheel	Check the lip of the wheel for flat spots or bends	Can worsen
Leak seems to come from valve area	Valve stem or TPMS seal leak	Spray soapy water on the valve stem, core, and sensor base	Diagnose soon
Bulge or bubble on the tire sidewall	Internal tire damage	Stop driving and inspect the sidewall for cord break damage	Stop driving

Best first move: Inflate the tire to the correct pressure, then use a close visual inspection and soapy water test to pinpoint whether the leak is in the tire, bead, or valve area.

Safety note: Do not keep driving if the tire is going flat quickly, the sidewall has a bulge or cut, or the wheel appears cracked or badly bent.

Table of Contents

Most Common Causes of a Tire Losing Air After a Pothole

After a pothole impact, a few causes show up far more often than the rest. The top three below cover most real-world cases, and a fuller list of possible causes follows later in the article.

Tire Sidewall or Tread Impact Damage: A pothole can pinch the tire hard enough to cut the sidewall, bruise the cords, or damage the tread area so the tire starts leaking immediately or soon after.
Bent Wheel or Wheel Runout: If the rim lip bends from the impact, the tire may no longer seal tightly to the wheel and can begin losing air from the bead area.
Tire Bead Leak: A hard pothole strike can disturb the seal between the tire bead and the rim, especially if there was already corrosion, dirt, or slight wheel distortion.

What a Tire Losing Air After a Pothole Usually Means

When a tire loses air after a pothole, the impact itself is usually the key clue. Unlike a slow leak that appears randomly over time, this kind of leak often starts because the tire or wheel took a direct hit strong enough to damage the sealing surfaces or the tire structure.

If the tire went soft almost immediately, think first about obvious physical damage. A cut sidewall, cracked wheel, or severely unseated bead can let air escape fast. If the pressure dropped more gradually, the leak is often smaller and may be at the bead, valve stem, TPMS seal, or a weak point created by the impact.

Where the damage is located also matters. Sidewall damage is especially serious because the sidewall flexes constantly and cannot be safely repaired in most cases. A bent outer rim lip often causes a bead leak, while damage near the valve area points more toward the valve stem, valve core, or TPMS hardware.

This symptom can also come with vibration, a pull, or a visible low corner of the vehicle. Those extra clues suggest the pothole may have done more than create an air leak. It may also have bent the wheel enough to affect balance or damaged the tire internally even if the leak itself seems small.

Possible Causes of a Tire That Starts Losing Air After a Pothole

Tire Sidewall or Tread Impact Damage

A pothole can pinch the tire between the wheel and the edge of the hole. That impact can split the sidewall, puncture the tread area, or break internal cords, allowing air to escape right away or after the tire flexes during driving.

Symptoms to Watch For

Air loss started immediately or within a short drive
Visible cut, split, or abrasion on the sidewall
Bulge or bubble on the sidewall
Thump, shake, or harshness after the impact

High Severity

Sidewall and internal cord damage can fail suddenly even if the tire still holds some air. A bubble or split means the tire is unsafe to continue using.

How to Confirm: Inflate the tire and inspect the full inner and outer sidewalls as well as the tread for cuts, bubbles, or punctures.

Typical fix: Replace the damaged tire and rebalance the wheel assembly.

Bent Wheel or Wheel Runout

A pothole can bend the rim lip or distort the wheel enough that the tire bead no longer seals evenly. Even a small flat spot on the wheel can create a persistent leak, and a larger bend may also cause vibration.

Symptoms to Watch For

Scuff or dent on the rim edge
Air leak appears near one section of the wheel
New vibration after the pothole hit
Tire pressure drops repeatedly even after refill

Moderate to High Severity

A bent wheel can worsen the leak and may also affect handling, balance, and tire wear. A cracked or severely bent wheel moves this into a do-not-drive situation.

How to Confirm: Inspect both the outer and inner rim lips closely, because inner wheel damage is common after pothole strikes.

How to Diagnose a Bent Wheel or Wheel Runout

Typical fix: Straighten the wheel if repairable or replace the damaged wheel, then remount and rebalance the tire.

Tire Bead Leak

The bead is the sealing edge where the tire meets the rim. A hard impact can momentarily unseat that area, shift the tire on the wheel, or expose corrosion and debris that were already weakening the seal.

Symptoms to Watch For

Slow air loss over hours or days
No nail or obvious puncture found
Leak bubbles around the rim-to-tire joint
Problem started right after impact with no sidewall cut

Moderate Severity

A bead leak may not flatten the tire instantly, but it can leave you driving on low pressure, which raises blowout risk and can damage the tire further.

How to Confirm: Inflate the tire to spec and spray soapy water all the way around both bead seats where the tire meets the rim.

Typical fix: Break down the tire, clean and reseal the bead surfaces, and repair or replace the wheel if the rim cannot seal properly.

Leaking Tire Valve Stem or Valve Core

A pothole impact can jar an aging rubber valve stem, loosen the valve core, or stress the stem where it passes through the wheel. The tire then loses air from the valve area instead of the tread or bead.

Symptoms to Watch For

Bubbles form at the valve stem or valve opening
Leak is strongest with the valve cap removed
Stem looks cracked, dry, or tilted
Pressure loss is steady but not usually instant

Moderate Severity

Valve leaks are often simpler than wheel or sidewall damage, but the tire can still end up dangerously underinflated if ignored.

How to Confirm: Spray soapy water directly on the valve stem, valve core opening, and the base where the stem enters the wheel.

Typical fix: Replace the valve core or valve stem and set the tire pressure to specification.

TPMS Sensor Seal Leak

On wheels with clamp-in TPMS sensors, the seal at the sensor stem can start leaking after a sharp impact. The sensor itself may survive, but the sealing grommet, washer, or nut can lose its seal and let air out slowly.

Symptoms to Watch For

Leak is at the valve area but the stem is metal
Slow leak began after the pothole hit
TPMS warning light may also appear
No visible damage in the tread or sidewall

Moderate Severity

This is usually a slow leak rather than a blowout risk by itself, but it still creates unsafe low-pressure driving if it is not repaired promptly.

How to Confirm: Use soapy water around the metal TPMS stem and sensor base where it seals against the wheel.

Typical fix: Replace the TPMS seal kit or damaged sensor hardware and remount the tire.

How to Replace a TPMS Sensor Seal

How to Diagnose the Problem

Note how quickly the tire loses air after you refill it. Minutes, hours, and overnight leaks usually point to different fault patterns.
Check the tire pressure with an accurate gauge and inflate it to the door-sticker specification before testing further.
Inspect the outer sidewall, inner sidewall, and tread for cuts, bubbles, punctures, or cords showing through the rubber.
Look closely at the wheel lip on both the outside and inside for dents, flat spots, cracks, or fresh impact marks.
Spray soapy water on the tread, sidewalls, bead area, and valve stem to find active bubbling.
If the leak is near the rim, rotate the wheel slowly and watch whether bubbling follows one bent or corroded section of the wheel.
If the leak is at the valve area, separate whether it is coming from the valve core, rubber stem, or TPMS sensor base.
If the tire has a sidewall bulge, rapid air loss, or a cracked wheel, stop driving and arrange towing or wheel removal.
If no obvious leak appears but the pressure keeps dropping, have the tire demounted so the inner sidewall, bead seat, and TPMS hardware can be inspected properly.

Is It Safe to Keep Driving on a Tire Losing Air After a Pothole?

Important: The guidance below is general and cannot confirm that your specific vehicle is safe to drive. If a symptom affects braking, steering, handling, fuel, overheating, smoke, visibility, or vehicle control, treat it as potentially serious and have the vehicle inspected before continued driving when appropriate. For more context, see our Automotive Safety Disclaimer.

Whether you can keep driving depends mainly on how fast the tire is losing air and whether the pothole caused structural tire or wheel damage. Some slow leaks may allow a very short trip for repair, but fast leaks and sidewall damage are different.

Okay to Keep Driving for Now

Only applies if the tire is holding near-correct pressure, the leak is very slow, there is no sidewall bulge or cut, and the wheel is not visibly bent or cracked. Even then, keep speeds moderate and repair it soon.

Maybe Okay for a Very Short Distance

A short drive to a nearby tire shop may be possible if the tire needs occasional air but stays inflated long enough to travel carefully. Avoid highway speeds, heavy loads, and long trips. Recheck pressure before moving.

Not Safe to Keep Driving

Do not keep driving if the tire goes flat quickly, the sidewall is cut or bulging, cords are exposed, the wheel is cracked, or the rim is badly bent. Also stop if the vehicle is shaking, pulling, or riding on a visibly low tire.

How to Fix It

The right fix depends on where the air is escaping and whether the pothole damaged the tire, the wheel, or the valve hardware. Some cases are simple sealing repairs, while others require replacing the tire or wheel.

DIY-friendly Checks

Confirm the leak location with a tire gauge and soapy water, inspect both sides of the tire and rim, and tighten or replace a leaking valve core if that is clearly the issue.

Common Shop Fixes

A tire shop can demount the tire, reseal a leaking bead, replace a valve stem or TPMS seal kit, repair a simple tread puncture when appropriate, and rebalance the assembly.

Higher-skill Repairs

Bent wheel correction, wheel replacement, TPMS hardware service with remounting, and replacement of a sidewall-damaged or internally damaged tire are better handled with proper tire equipment.

Related Repair Guides

Typical Repair Costs

Repair cost depends on the vehicle, wheel type, tire size, and the exact damage caused by the pothole. The ranges below are typical U.S. parts-and-labor estimates for common repair paths.

Bead Reseal and Tire Remount

Typical cost: $30 to $90

This usually applies when the tire itself is still usable and the leak is limited to the bead sealing area.

Valve Stem or Valve Core Replacement

Typical cost: $15 to $60

This is the typical low-cost fix when the leak is isolated to the stem or core and the tire does not need replacement.

TPMS Seal Kit Service

Typical cost: $40 to $120

Cost rises if the tire must be remounted and the sensor hardware kit is replaced rather than just the valve core.

Wheel Straightening or Wheel Replacement

Typical cost: $100 to $400

Repairable bends are usually cheaper than replacing an alloy wheel, but cracked or severely deformed wheels often need full replacement.

Tire Replacement

Typical cost: $120 to $450 per tire

This is common when the sidewall is cut, the tire has a bulge, or the internal structure was damaged by the impact.

What Affects Cost?

Tire size, speed rating, and brand choice
Steel wheel versus alloy wheel damage
Whether the damage is a simple seal leak or structural tire failure
Local labor rates and mounting/balancing charges
Whether TPMS hardware also needs service or replacement

Cost Takeaway

If the tire only leaks slowly from the bead or valve area, the fix is often in the lower cost range. Once the pothole has bent the wheel or damaged the sidewall, costs rise quickly because replacement parts and rebalancing are usually required.

Symptoms That Can Look Similar

Slow Leak From a Nail or Screw
TPMS Warning Light With No Actual Leak
Wheel Vibration After Hitting a Pothole
Car Pulls to One Side After Impact
Tire Sidewall Bulge With No Immediate Flat

Parts and Tools

FAQ

Can a Pothole Really Cause a Tire to Start Leaking Right Away?

Yes. A hard pothole hit can cut the sidewall, bend the wheel, disturb the bead seal, or damage the valve area. Any of those can create an immediate or delayed air leak.

Is It Safe to Plug a Tire if the Leak Started After a Pothole?

Only if the leak turns out to be a repairable tread puncture and the tire has no sidewall damage, bulge, or structural injury. If the pothole damaged the sidewall or the wheel, a plug will not address the real problem.

Why Does the Tire Lose Air Overnight Instead of Going Flat Immediately?

That usually points to a smaller leak such as a bead leak, valve leak, or TPMS seal leak. Large cuts, cracked wheels, or badly damaged sidewalls tend to lose air much faster.

Can a Bent Rim Cause a Slow Leak Without Looking Badly Damaged?

Yes. Even a small flat spot or slight distortion on the inner rim lip can break the bead seal. Inner wheel damage is easy to miss without removing the wheel or using soapy water around the bead.

Should I Replace the Tire if There Is a Sidewall Bubble but It Still Holds Air?

Yes. A sidewall bubble means the internal cords were damaged. That tire is unsafe to keep using because the weakened sidewall can fail even if the pressure seems stable for the moment.

Final Thoughts

When a tire starts losing air after a pothole, treat the impact as the main clue. The first job is to find exactly where the air is escaping, because the best next step depends on whether the damage is in the tire, the wheel, or the valve area.

Start with the visible and likely causes first: sidewall damage, a bent rim, and a bead leak. If the tire is losing air quickly, has a bubble, or the wheel looks cracked or badly bent, stop driving and deal with it as a safety issue rather than just an inconvenience.