Pothole Damage to Car: Spot It, Cost It, Fix It

A mechanic-level guide to pothole damage to car tyres, wheels, suspension and steering, with clear checks, repair costs and what to do right after impact.

Hitting a pothole at speed sends a violent shock through your tyres, wheels, suspension and steering all at once, and pothole damage to a car is often hidden until it turns into a bigger, costlier fault. The impact can pinch a tyre, crack an alloy, knock the wheel alignment out, or bend a suspension arm, and some of these problems are safety-critical. This guide shows you exactly what to check, what repairs typically cost, and how to tell a quick fix from a job for a workshop.

Why potholes do so much damage

When a wheel drops into a pothole, the leading edge of the hole strikes the tyre and rim like a hammer. At 50 km/h a full-size wheel can hit the far lip of a deep pothole with several tonnes of momentary force. That energy has to go somewhere. It first compresses the tyre against the rim (a "pinch"), then travels up through the wheel bearing, suspension arms, springs and dampers, and finally into the steering rack and subframe.

The faster you are travelling and the harder the tyre sidewall, the less time the suspension has to absorb the blow, so low-profile tyres on large alloy wheels suffer the worst pothole damage. Under-inflated tyres are also far more likely to be cut or to let the rim strike the road directly.

The main types of pothole damage

Damage from a single impact usually falls into one of these categories, roughly in order of how often they occur:

• Tyre damage - sidewall bulges, cuts, or a sudden blowout. A bulge means the internal cords have snapped and the tyre must be replaced, not repaired.
• Bent or cracked wheel (rim) - steel wheels bend and can sometimes be reshaped; alloy wheels crack and often leak air or must be replaced.
• Wheel alignment (tracking) knocked out - the car pulls to one side and tyres wear unevenly.
• Suspension damage - bent control arms, damaged ball joints, leaking dampers, or a broken coil spring.
• Steering and bearing damage - a notchy or off-centre steering wheel, or a wheel bearing that starts to hum.
• Under-body and exhaust knocks - dented sump, cracked plastic undertray, or a dislodged exhaust section.

Warning signs to watch for after an impact

Some symptoms appear instantly; others build over days. Use this table to link what you feel or hear to the likely cause and urgency.

If any steering, braking or suspension symptom is present, treat the car as unsafe until it has been inspected. A qualified mechanic should handle suspension, steering and brake work, because these systems are safety-critical and often need alignment or torque specifications.

What to do in the first 10 minutes

Follow these steps immediately after a hard pothole strike:

1. Find a safe place to stop. Pull well off the road, switch on hazard lights, and only inspect the car where it is safe to stand.
2. Look at all four tyres. Run your hand around each sidewall (inner and outer) feeling for bulges, and look for cuts or cords showing.
3. Check the wheels. Look for fresh gouges, a flat spot on the rim edge, or a hairline crack on an alloy.
4. Watch for a rapid deflation. A hissing sound or a tyre visibly going down means a pinch puncture or split bead.
5. Do a slow test roll. If the car is safe, drive slowly for a short distance and note any pull, vibration, clunk or new noise.
6. Photograph the pothole and damage. If you intend to claim for pothole damage to your car, note the location, size and date - this evidence supports a claim to the road authority or your insurer.

Do not keep driving on a tyre with a sidewall bulge or on a car that clunks heavily or sits lopsided. Recover it instead.

Repair costs to expect

Costs vary by vehicle, region and whether parts are original or aftermarket, but these ranges give you a realistic picture in USD:

A simple bent-rim-plus-alignment job might total under 200 USD, while a bent control arm with new tyre and alignment can climb past 600 USD. Always ask for the old parts back and for a printout of the alignment readings.

Checking alignment and suspension yourself

You can catch the most common problems before spending on a workshop diagnosis:

• Tyre wear pattern. Feathered or one-sided wear on a front tyre points to a toe or camber problem from the impact.
• The straight-road test. On a quiet, flat, straight road, briefly loosen your grip. A steady drift to one side suggests alignment or a suspension shift.
• The bounce test. Push down hard on each corner of the car and release. It should settle in one rebound; repeated bouncing suggests a worn or damaged damper.
• Visual check underneath. With the car safely raised and supported, look for bright metal scrapes, bent arms, split rubber bushes, or a coil spring with a fresh break at the bottom.

Modern cars will not usually store a fault code for mechanical pothole damage, but if your steering, ABS or stability warning light comes on after an impact, a bent sensor bracket or damaged wheel-speed sensor may be to blame. You can read the code first with an OBD-II scanner to point the diagnosis in the right direction. Our free car tools can also help you log tyre pressures and track alignment symptoms over time.

Preventing pothole damage

You cannot avoid every hole, but you can cut your risk and limit the harm:

• Keep tyres at the correct pressure. A properly inflated tyre cushions the rim far better than a soft one.
• Leave space and scan ahead. Following too closely hides holes until it is too late to react.
• Slow down before, not over, a hole. Braking during the impact loads the front suspension harder; brake early, then release before the wheel drops in.
• Do not swerve blindly. Losing control or hitting oncoming traffic is worse than the pothole.
• Consider tyre and wheel choice. A slightly higher-profile tyre absorbs more shock than an ultra-low-profile one.

For a deeper look at reading tyre condition, see our guide on how to read tyre wear patterns.

Frequently asked questions

Can I keep driving after hitting a pothole?

Only if there are no warning signs. If the tyre has a bulge or cut, the car clunks heavily, pulls strongly, vibrates, or sits lower on one side, stop and have it inspected. Those symptoms point to structural tyre, wheel or suspension damage that can fail suddenly at speed.

How do I know if a pothole bent my wheel or just knocked the alignment?

A bent wheel usually causes a vibration that grows with speed and may slowly leak air, and you can often see a flat spot on the rim. A misaligned car instead pulls to one side and wears a tyre unevenly, but drives smoothly. Many impacts cause both, so a workshop road test and alignment check settle it quickly.

Is pothole damage covered by insurance or claimable from the road authority?

Comprehensive insurance often covers pothole damage, though the excess may exceed the repair cost for minor jobs. Many road authorities also accept claims if you can prove the location, size and date of the pothole, so photograph everything and keep repair invoices.