The Hole That Bends a Wheel

Potholes here follow the rain, and they follow it fast. Water gets into a crack, works its way beneath the pavement, and traffic breaks the weakened surface out from underneath. A road that was perfectly fine in October can be losing chunks within days of the first serious storm — which is why our worst road surfaces show up in the weeks after weather that most of the country would call a normal week.

Where they concentrate

• The outside lanes, where the drainage runs and where heavy vehicles track.
• Intersection approaches, where braking loads the same few feet of surface thousands of times a day.
• On-ramps and off-ramps, for the same reason plus the constant turning load.
• Utility trench patches, which are a seam in the pavement and behave like one.
• Anywhere that flooded, because water that sat under the pavement has already done the damage; the traffic just reveals it.

What a hard impact actually damages

More than most people check for. The obvious casualties are a tire sidewall — which can be bruised now and fail a week later — and a bent wheel rim, which often shows up only as a slow leak or a vibration. The less obvious ones are suspension components, steering parts, and alignment.

The tells afterward are worth memorizing: a pull to one side, a vibration through the wheel at a particular speed, a steering wheel that is no longer straight when the car is, or a tire that keeps needing air. Any of those after a heavy impact deserves a look, because a bent component that goes unnoticed quietly destroys tires and does it expensively.

One local wrinkle: the low-profile tires and large wheels that are common on newer cars here have very little sidewall to absorb an edge strike. The same hole that a taller sidewall shrugs off can bend an expensive wheel.

Hitting one as safely as possible

If you cannot avoid it, the advice is counterintuitive: do not be braking at the moment of impact. Braking pitches the car's weight forward and compresses the front suspension, so the wheel meets the edge with its travel already used up. Brake before it, release as you reach it, and hold the wheel straight and firm with both hands.

And check your mirror before any swerve. A vehicle in the next lane is a far worse outcome than a wheel that needs balancing. The swerve is the part that turns a repair bill into a collision.

In the rain, a pothole full of water is indistinguishable from a puddle. That is a reason to increase your following distance, and a reason not to track exactly where the car ahead went — they may be steering around something you cannot see.

What to do in the next ten minutes

1. Find somewhere safe to stop if the hit was hard. Not the freeway shoulder if you can reach an exit.
2. Look at the tire and the wheel lip for a bulge in the sidewall or a flat spot on the rim edge. A bulge means the tire is done, today, not later.
3. Check the pressure before you drive on, since a slow leak from a rim strike starts immediately.
4. Note where it happened — street, direction, nearest cross street. You will need it for both the report and any claim.

Reporting it, and claiming against an agency

Road authorities maintain reporting channels for surface defects: Caltrans for state highways, and cities and counties for the roads they own. Reporting is worth doing regardless of whether you pursue anything, because it is how the repair actually gets scheduled and because the report establishes the defect existed.

Claiming against a public agency for the damage is a separate process from your insurance with its own rules, its own form, and short deadlines — the window for this kind of damage claim is measured in months, not years. If you are considering it, get the agency's own claim instructions promptly rather than assuming you have time. Whether such a claim succeeds usually turns on what the agency knew about the defect and when, which is another reason reporting matters.

On the insurance side

Damage to your own vehicle from striking a pothole generally falls under collision coverage rather than comprehensive — the reverse of the animal-strike case, and a distinction worth knowing before you call. Collision is optional in California, so a liability-only policy will not respond at all here. Whether claiming makes sense depends on the repair against your deductible, and on a single wheel and tire that arithmetic often does not work out in favor of a claim. Ask your carrier how it treats road-surface damage specifically before deciding.

If you are not sure whether you carry collision, or at what deductible, send us the declarations page and we will read it back to you in plain English.