Published by Rims & Tires
Compiled & checked by the site's publisher from manufacturer, NHTSA & USTMA data · Updated 2026-08-01
Every uneven wear pattern points at a specific cause. Both edges worn means under-inflation. Center worn means over-inflation. One edge worn means camber or toe is out of alignment. Scalloped dips around the tread mean worn shocks or struts. Patchy wear means the tire is out of balance. Read the pattern and you know what to fix before the tire fails.
What causes wear on both edges, or on just one edge?
Both outer edges wearing faster than the center = under-inflation. The tire is bowing outward, putting more load on the shoulders. Fix: bring pressure to spec. See our over-inflated vs. under-inflated tires guide for the full comparison of what each condition does.
One inside or outside edge wearing faster = camber or toe misalignment. The wheel is angled wrong relative to the road. Fix: wheel alignment. This pattern is common after lifting or lowering, or after a pothole impact that shifts the geometry.
What causes wear down the center of the tread?
Center of the tread wearing faster than the edges = over-inflation. The tire is ballooning in the middle, reducing the contact patch to the center. Fix: reduce pressure to spec. Also possible if someone set the pressure to the sidewall MAX rather than the door-jamb spec. Our overinflated tires guide covers how to safely let air back out.
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What causes tire cupping or scalloping?
Cupping (dips or scallops around the tread circumference) = worn shocks or struts, or an out-of-balance tire. A bouncing wheel doesn't maintain consistent contact with the road. Fix: replace the worn shocks/struts and have the tires rebalanced. Ignoring it destroys tires fast and makes handling dangerously unpredictable.
What causes patchy or diagonal tire wear?
Patchy wear across the tread = wheel balance issue (the tire is heavy in spots and beats against the road rhythmically). Fix: rebalance. Diagonal wear striping can also indicate incorrect toe-in/toe-out alignment.
In all cases: once you've identified and fixed the root cause, rotate tires to even out wear going forward. If wear is extreme on one or two tires, you may need to replace them even if the others are fine.
Frequently asked
Can I fix uneven tire wear?
You can stop it from getting worse by fixing the root cause (alignment, pressure, balance, shocks). You can't reverse existing uneven wear — but rotating the tires can even it out somewhat if the damage isn't too deep.
How often should I check for uneven tire wear?
Every time you rotate your tires (every 5,000–7,000 miles) is a natural opportunity to inspect. Also check if you feel vibration, pulling, or a new noise from a tire.
How can I tell alignment wear from normal wear?
Normal wear spreads evenly across the whole tread as the miles pile up. An alignment problem eats one edge while the rest still looks healthy, and the car often pulls to one side on a flat road. Catch either one and get an alignment before buying new tires, or the fresh set wears out the same way.
Will uneven tire wear fail an inspection in Georgia?
Georgia doesn't require an annual safety inspection for most vehicles, so nobody flags it for you. That means it's on you to spot a worn edge before it turns into a cord-showing hazard. A quick look every oil change is enough.
Do I have to replace all four tires if only two wore badly?
Not always. If the good tires still have solid, matching tread, you can replace just the worn pair and run the new ones on the rear. All-wheel drive is fussier, since big tread-depth gaps can stress the drivetrain, so let a local shop measure before you decide.
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Last updated 2026-08-01. General guidance only — confirm specifics with a local shop for your exact vehicle.