Tire Has Repeating High and Low Spots - Top Causes, Fixes & What to Do

Certified Professional Automotive Mechanic – Owner and Editor of VehicleRuns

Last Updated: October 23, 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 has repeating high and low spots around its circumference, the tread is no longer wearing or rotating evenly. Drivers often notice this as a visual wavy pattern, a hop at certain speeds, a rhythmic thump, or a vibration that never balances out for long.

In plain English, this usually means one of three things: the tire itself is damaged or wearing unevenly, the wheel and tire assembly is not running true, or the suspension is allowing the tire to bounce instead of staying planted on the road. The exact cause depends on whether the problem is only in one section of the tire, appears all the way around, and whether the vehicle also shakes, hums, or pulls.

Some cases are mostly a wear issue. Others point to a separated belt, a bent wheel, or worn shocks or struts that can shorten tire life quickly. The goal is to figure out whether the tire is simply worn badly, or whether something underneath caused it.

Start by looking at the tread pattern and noting whether the vehicle also bounces, hums, or shakes at speed. The most useful split is whether the tire looks damaged by itself or whether another chassis problem likely caused the wear.

What you notice	Most likely cause	What to check first	Urgency
Raised and dipped sections around whole tire	cupped or scalloped tire wear	Run your hand across the tread and inspect shocks or struts for leakage	Can worsen
One bulged area or uneven roundness	belt separation	Spin the tire slowly and look for bulges or sidewall distortion	Stop driving
Thumping starts at one road speed	out-of-round tire or bent wheel	Spin the wheel off the ground and watch tread and rim runout	Can worsen
Feathered tread with pull or crooked steering	alignment problem	Check tread edges across the tire and inspect for obvious suspension play	Diagnose soon
Uneven spots after recent balance or tire install	wheel mounting or balance problem	Recheck lug torque, centering, and wheel balance history	Diagnose soon

Best first move: Inspect the tire closely before driving more, then decide whether the wear pattern points to tire failure, poor damping, or a wheel and alignment problem.

Safety note: Do not keep driving if you find a bulge, exposed cords, severe hop, or a section of tread that looks lifted or distorted. That can indicate internal tire failure.

Table of Contents

Most Common Causes of Repeating High and Low Spots on a Tire

The most common reasons a tire develops repeating high and low spots are uneven tread wear, internal tire damage, and a chassis issue that keeps the tire from rolling smoothly. A fuller list of possible causes appears below.

Cupped or Scalloped Tire Wear: A series of alternating high and low tread blocks usually means the tire has been bouncing on the road, often from weak shocks or struts or a long-running balance problem.
Tire Belt Separation: If the tire looks out of round, has a bulge, or produces a strong rhythmic thump, an internal belt may be separating and the tire may need immediate replacement.
Worn Strut or Shock Absorber: When a damper can no longer control wheel movement, the tire repeatedly slaps the road and develops the classic high and low wear pattern.

What Repeating High and Low Spots on a Tire Usually Mean

Repeating high and low spots usually mean the tire is not staying in smooth, even contact with the road. Instead of rolling in a clean circle, it is either bouncing, wobbling, or changing shape as it turns.

If the tread has a wavy, scooped pattern around the tire, that points more toward cupping or scalloping. This often goes with worn shocks or struts, a balance issue, or a wheel that has been running slightly out of true for a while.

If one part of the tire sticks out more than the rest, or the tire looks egg-shaped when spinning, internal tire damage becomes more likely. Belt separation can mimic a balance problem at first, but it often gets worse quickly and should be treated as a tire safety issue.

Where the symptom shows up also matters. A front tire problem is more likely to show up in the steering wheel. A rear tire problem may be felt more in the seat or floor. If the tread wear comes with a pull, feathered edges, or off-center steering, alignment or worn suspension geometry is often part of the story.

Possible Causes of a Tire with Repeating High and Low Spots

Cupped or Scalloped Tire Wear

Cupping creates alternating deeper and shallower tread areas around the tire. As the tire rolls, those uneven sections create the repeating high and low appearance and often a rhythmic road noise or light hop.

Symptoms to Watch For

Wavy tread blocks you can feel by hand
Road hum or helicopter-like tire noise
Vibration that comes and goes with speed
Wear pattern repeated around the tire, not just one spot

Moderate Severity

The tire may still hold air, but the wear will usually keep getting worse and can hide the real underlying cause. It also reduces ride quality and can hurt wet-weather grip.

How to Confirm: Run your palm lightly around the tread in both directions and compare each section.

Typical fix: Replace the damaged tire if wear is advanced, then correct the root cause by balancing the assembly and repairing the suspension or alignment issue that caused the cupping.

Tire Belt Separation

A separated internal belt changes the tire's shape as it rotates. That creates a high spot, low spot, or bulged section that can cause a thump, hop, or strong vibration even if the tire still looks inflated normally.

Symptoms to Watch For

One section looks raised or distorted
Rhythmic thump that gets worse with speed
Steering shake that balancing does not fix
Visible sidewall bulge or tread ripple

High Severity

This is a true safety concern because internal tire damage can worsen rapidly and may lead to tread failure or a blowout.

How to Confirm: Jack up the vehicle safely and spin the tire slowly while watching the tread and sidewall from the front and side.

Typical fix: Replace the tire immediately and inspect the wheel and suspension for any impact damage that may have contributed to the failure.

Worn Strut or Shock Absorber

When a shock or strut loses damping, the wheel can bounce instead of staying controlled over the road surface. That repeated bounce pounds the tread into alternating high and low areas, especially on highways or rough pavement.

Symptoms to Watch For

Cupping on one or both tires
Extra bounce after bumps
Nose dive or body float
Oil leakage from the shock or strut body

Moderate to High Severity

The vehicle may still be drivable, but braking control, tire life, and stability suffer. Ignoring it often destroys the replacement tire too.

How to Confirm: Perform a visual inspection for leaking dampers and damaged mounts, then road test over uneven pavement.

Typical fix: Replace the worn shock absorbers or struts, then install a new tire if the existing one is badly cupped and perform an alignment.

Bent Wheel or Wheel Runout

A wheel that does not run true forces the tire to rise and fall slightly every rotation. Over time that can create repeating high and low spots in the tread and a persistent hop or shake that feels like a balance issue.

Symptoms to Watch For

Vibration that remains after balancing
Visible side-to-side or up-and-down wheel wobble
Damage after a pothole or curb strike
Tire wear concentrated on one wheel

Moderate to High Severity

The problem can rapidly wear the tire and stress suspension parts. A severely bent wheel can also affect sealing and handling.

How to Confirm: Raise the wheel and spin it while watching the rim lip and tire tread against a fixed reference point.

How to Diagnose a Bent Wheel or Wheel Runout

Typical fix: Repair or replace the bent wheel, rebalance the assembly, and replace the tire if the tread has developed permanent irregular wear.

Wheel Alignment or Shifted Suspension Geometry Problem

If toe or camber is far enough out, the tire scrubs instead of rolling cleanly. That usually causes feathering or edge wear first, but over time it can contribute to repeating high and low sections, especially when combined with weak damping.

Symptoms to Watch For

Inside or outside edge wearing faster
Feathered tread blocks
Vehicle pulls or steering wheel sits off-center
Uneven wear returns after tire rotation

Moderate Severity

Alignment problems usually do not create an immediate blowout risk by themselves, but they shorten tire life and can make the vehicle wander or feel unstable.

How to Confirm: Inspect tread wear across the full width of the tire and compare both sides of the vehicle.

Typical fix: Perform a proper wheel alignment and repair any bent or worn parts that prevent the alignment from holding.

When and How to Get a Wheel Alignment

Worn or Damaged Suspension/Steering Components

Loose ball joints, control arm bushings, tie rods, or similar parts let the wheel move in ways it should not. That changing geometry can make the tire skip, scrub, or bounce, which creates uneven high and low wear over time.

Symptoms to Watch For

Clunks over bumps
Uneven tire wear that returns quickly
Loose or wandering steering feel
Visible play in front-end components

Moderate to High Severity

Some play may start as a wear issue, but badly worn suspension parts can affect control and may become a safety problem if ignored.

How to Confirm: With the vehicle lifted, check for play at the wheel and inspect ball joints, bushings, and tie rods while an assistant moves the wheel.

How to Diagnose Worn Front Suspension or Steering Parts

Typical fix: Replace the worn suspension or steering components, align the vehicle, and replace the tire if the wear pattern is too advanced to run smoothly.

How to Diagnose the Problem

Park on level ground and inspect the full circumference of the tire, not just the part touching the ground.
Run your hand across the tread to feel for scalloping, feathering, or one raised section.
Compare the suspect tire to the same tire on the opposite side. A repeating pattern that is much worse on one wheel is a strong clue.
Note any related symptoms while driving, especially steering wheel shake, seat vibration, rhythmic thumping, pull, or extra bounce over bumps.
Check tire pressure and confirm the tire has not been run significantly overinflated or underinflated.
Inspect the sidewall and tread for bulges, ripples, exposed cords, impact damage, or signs of belt separation.
Spin the wheel off the ground if possible and watch for radial hop or side-to-side wobble in the tread or rim.
Look for leaking shocks or struts and obvious wear in control arms, bushings, tie rods, or ball joints.
Review recent history such as pothole impacts, curb strikes, missed rotations, or a balance issue that never fully went away.
If the tire appears structurally damaged or the cause is still unclear, have a tire shop measure wheel runout and inspect the suspension before installing a replacement tire.

Can You Keep Driving with High and Low Spots on a Tire?

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 on whether the tire is merely worn unevenly or is actually failing internally. The difference matters a lot.

Okay to Keep Driving for Now

Only consider short-term driving if the tire shows mild scalloping with no bulge, no exposed cords, no strong vibration, and the vehicle still tracks normally. Even then, plan to diagnose it soon because the wear will not correct itself.

Maybe Okay for a Very Short Distance

If the tire has obvious uneven spots and is causing a thump or vibration, it may be okay only for a very short drive to a nearby shop at lower speed. Avoid highway driving, heavy loads, and long trips.

Not Safe to Keep Driving

Do not keep driving if you see a bulge, tread distortion, separated belt signs, exposed cords, severe hop, or a rapidly worsening shake. Replace or tow the vehicle rather than risk a tire failure.

How to Fix It

The right fix depends on whether the tire is the main problem or whether another chassis issue caused the tire to wear this way. Replacing the tire alone often does not solve it if the root cause is still present.

DIY-friendly Checks

Check tire pressure, inspect the tread by hand, compare both sides, look for bulges, and inspect shocks or struts for leakage or obvious wear.

Common Shop Fixes

Typical shop repairs include tire replacement, wheel balancing, wheel alignment, and replacing worn shocks, struts, or basic suspension parts.

Higher-skill Repairs

More involved repairs may include measuring wheel runout, replacing bent wheels, correcting deeper suspension looseness, or diagnosing repeated irregular wear that returns after normal tire service.

Related Repair Guides

Typical Repair Costs

Repair cost depends on the vehicle, local labor rates, tire size, and the exact reason the tire developed high and low spots. The ranges below are typical U.S. parts-and-labor estimates for the most common fix paths.

Wheel Balancing

Typical cost: $60 to $140

This usually applies when the tire is still usable and the main issue is an imbalance or a balance that was never corrected properly.

Wheel Alignment

Typical cost: $100 to $250

This is common when the tread also shows feathering, edge wear, pull, or off-center steering.

One Tire Replacement

Typical cost: $140 to $400+

Price varies widely with tire type and size, and replacement is usually required when the tread is badly cupped or internally damaged.

Shock or Strut Replacement

Typical cost: $300 to $1,200 per axle

Costs are higher when complete strut assemblies are used or when both sides are replaced together, which is common.

Bent Wheel Repair or Replacement

Typical cost: $150 to $700

Minor straightening can cost less, while cracked or heavily damaged alloy wheels usually need replacement.

Suspension Component Replacement and Alignment

Typical cost: $250 to $1,000+

This range covers worn tie rods, control arms, ball joints, or bushings that caused the tire to wear unevenly.

What Affects Cost?

Tire size, brand, and speed rating
Whether one tire or a matched pair must be replaced
Local labor rates and alignment pricing
How much suspension wear is found underneath
Whether the wheel is also bent or damaged

Cost Takeaway

If the tire only needs balancing or alignment, the bill is usually at the low end. Once the tread is badly cupped, the tire must be replaced as well. Costs rise the most when the uneven wear traces back to failed struts, bent wheels, or worn suspension parts that have to be corrected before new tires go on.

Symptoms That Can Look Similar

Parts and Tools

FAQ

Can a Bad Alignment Alone Cause Repeating High and Low Spots on a Tire?

Alignment can contribute, especially if the tread is also feathered or one edge is wearing faster. But a classic repeating high and low pattern often involves another factor too, such as weak shocks or struts, a balance problem, or wheel runout.

Do High and Low Spots Mean the Tire Is Out of Balance?

Not always. An imbalance can help create irregular wear, but the pattern can also come from internal tire damage, a bent wheel, or suspension problems. Once the tread is badly uneven, balancing alone usually will not make the tire run smoothly again.

Is a Tire with Scalloped Tread Dangerous?

Mild scalloping is often more of a wear and ride-quality issue than an immediate emergency, but it should still be diagnosed soon. If the tire also has a bulge, exposed cords, severe vibration, or obvious distortion, treat it as unsafe.

Will Rotating the Tires Fix Repeating High and Low Spots?

Rotation can spread wear more evenly in the early stages, but it does not repair a damaged tread pattern. If the tire is already badly cupped or out of round, the underlying cause still needs to be fixed and the tire may need replacement.

How Can I Tell the Difference Between Cupping and Belt Separation?

Cupping usually shows a repeated scooped pattern across the tread blocks around the tire. Belt separation more often creates a distinct bulge, a visibly out-of-round shape, or one section that rises higher than the rest as the tire spins.

Final Thoughts

Repeating high and low spots on a tire are usually a clue, not an isolated problem. Start by deciding whether the tire itself is structurally damaged or whether the wear pattern was caused by balance, damping, alignment, or suspension movement.

If the tread is simply uneven, fix the underlying cause before installing new tires or the pattern will often come back. If you see a bulge, severe out-of-round shape, or strong rhythmic thump, treat it as a likely tire failure and stop driving until it is replaced.