Bent Rim After a Pothole or Curb? Wheel and Tire Checks

Two parts took the hit

A pothole or a curb doesn't just hit the tire. AAA puts it plainly: when a car strikes a pothole, the tires, wheels and suspension get the brunt of the impact. In AAA's 2021 survey, 1 in 10 drivers had pothole damage bad enough to need a repair.

Most advice after a pothole focuses on the tire, and our blog post on hitting a curb or pothole walks through the tire and alignment signs. This guide covers the two things that are easiest to miss: the wheel itself, and tire damage you can't see from outside.

Damage that hides inside the tire

Michelin's tire damage guide is clear that looks can deceive:

• Internal damage (broken cords, belt separation or carcass damage from an impact) is often invisible from the outside.
• A tire that looks normal after hitting a pothole may have structural damage that will eventually fail.
• That's why Michelin recommends having tires professionally inspected after any significant impact, which means removing the tire from the wheel to examine the inside.

So a clean-looking sidewall the morning after isn't the end of it. If the hit was hard enough to make you wince, or the TPMS light came on, have it inspected. And keep looking: if a bulge or bubble shows up on the sidewall later, that's cord damage, and Michelin says the tire can't be repaired. Our guide to a bubble in the tire sidewall covers what to do next.

Where to look on the wheel

Trade magazine Tire Review gives a simple method: with your eyes at wheel level, look closely at the inboard and outboard edges of the wheel, right where the metal meets the rubber. That's the lip, or flange, where the tire seals against the wheel. It's also where a pothole edge or curb usually lands.

What you're looking for:

Check the inboard side too. On many cars you can only see it with the wheel turned, or from underneath. A crack there doesn't show from the curb side at all.

Bent rim symptoms

A bent wheel often tells you it's there before you see it:

• A new vibration at certain speeds. Tire Review notes that a wheel can be slightly bent or out of round and still balance within specification, then vibrate once it's on the road. Rebalancing alone may not cure it.
• A tire that keeps losing air on one corner. Tire Review describes a wheel whose lip was rolled over, creating a constant air leak in addition to vibration.
• A pull or uneven wear. Michelin notes that a significant pothole or curb impact can misalign the wheels and damage the tire simultaneously. Misaligned wheels scrub the tire sideways, so the wear shows up on one edge.

Answer a few questions about what you feel and hear, and the checker lists the likely causes and the service that checks each:

The same tool is on its own page: car shaking checker.

Can a bent wheel be fixed?

Sometimes, but it's a specialist's call, not a tire shop shortcut. Tire Review is blunt about alloy wheels: cold hammering an alloy wheel will most likely crack it before it becomes straight. It also says a reputable wheel repair shop will scrap rather than attempt to fix a wheel it considers unsound.

The practical rule:

• Cracked: replace the wheel.
• Bent: have a wheel specialist assess it. Some can be straightened, some can't.
• Cosmetic curb rash only: it's a cosmetic decision, not a mechanical one.

If you're replacing a wheel, it has to match more than the bolt pattern. Our guides to bolt pattern and wheel offset and backspacing explain what to match, and you can browse wheels when you know what fits.

Can the tire be repaired?

Impact damage usually lands on the sidewall or shoulder, which is exactly where industry guidance says no. USTMA limits repairs to punctures in the tread area, 1/4 inch (6 mm) or smaller, and rules out the sidewall and shoulder. A tire that was cut or bulged by a curb is a replacement, not a patch. Our damage map shows the zones.

Florida's version of the pothole

South Florida doesn't have freeze-thaw winters, but it has afternoon storms. AAA's warning applies every rainy season: puddles may disguise a deep pothole. A flooded right lane on a side street can hide an edge that bends a wheel lip.

AAA's advice for a hole you can't avoid is to slow down as much as you can beforehand and avoid braking abruptly over it. Correct tire pressure, set to your door placard and checked monthly, gives the tire and wheel their full cushion.

What to have checked, and where

1. The tire. Off the wheel and inspected inside, per Michelin, if the hit was significant.
2. The wheel. Lip, face and inboard side, measured if there's a vibration.
3. The alignment. If the car pulls or the steering wheel sits off-center afterward.

Extreme Tires does four-wheel alignment at the Sunrise shop, and its mobile vans mount, balance and inspect tires and wheels at your home or office across Miami-Dade, Broward and Palm Beach. See mobile service or call (954) 773-1896. If a tire needs replacing, shop by size and match the size, load index and speed rating on your door placard. Tires ship free to the 48 contiguous states and DC.

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