Why does my car shake at highway speed?
Short answer: A vibration that shows up around highway speeds and smooths out above or below them is most often a wheel and tire balance problem. Other common causes are a damaged tire, a bent wheel, or worn suspension or steering parts. If it shakes only when braking, the brakes are the likely cause.
Is it safe to drive? A mild vibration from tire balance usually isn’t an emergency, but get it checked soon. A sudden new shake, a bulge on a tire sidewall, or a clunk, means slow down and get it looked at right away, because a failing tire can lose air quickly.
Common causes
- Wheel and tire imbalance. The most common cause. Usually felt in the steering wheel at a certain speed range. Balancing is one of the cheaper fixes; ask for the price per wheel.
- Damaged tire. A bulge, a separated belt or uneven wear can cause shaking that gets worse.
- Bent wheel. Potholes and curbs can bend a wheel enough to vibrate.
- Worn steering or suspension parts. Tie rod ends, ball joints or control arm bushings with play.
- Brake rotors. If it shakes mainly when you brake, see our guide to the steering wheel shaking when braking.
- Wheel bearing. Usually a growl or hum that changes with speed, sometimes with vibration. Wheel bearing replacement: $346 – $504 (RepairPal avg.)
Cost figures: RepairPal national averages, estimates last updated September 3, 2026 (checked October 18, 2026), before taxes and fees. Your vehicle, region and shop can put you well outside these ranges.
What to do now
- Look at all four tires for bulges, cuts or uneven wear, and check tire pressures.
- Note the speed range where it shakes, and whether it’s in the steering wheel (often front) or the seat (often rear).
- Notice whether it changes when you brake, accelerate or coast.
- Mention all of that to the shop. It saves diagnostic time.
Questions to ask the shop
- Did you road-test it at the speed where it shakes?
- Were all four wheels balanced, and were any weights missing or any wheels bent?
- Is there tire damage, such as a separated belt?
- Did you find any play in the tie rods, ball joints or wheel bearings?
- Is an alignment needed, or is it being added to the estimate as a recommendation?
More questions by repair type →
Frequently asked questions
Why does my car shake at 60 mph but not at 40?
That pattern is typical of a wheel and tire balance issue, because the imbalance resonates at certain speeds. A damaged tire or bent wheel can do the same.
Can a wheel alignment fix shaking?
Alignment mainly fixes pulling and uneven tire wear, not vibration. Balance is the more common fix for shaking. RepairPal’s national average for an alignment is roughly $186 to $273 if you need one.
Is it safe to drive if my car shakes at highway speed?
A mild, steady vibration is usually not an emergency but should be checked soon. A sudden new shake or a visible tire bulge needs attention right away.
Why does my car shake when I accelerate?
Shaking that appears mainly when accelerating can point to a worn CV axle on front-wheel-drive cars, a motor mount, or a drivetrain issue. Mention exactly when it happens.
Related guides
- Steering wheel shakes when braking
- Car pulls to one side
- Tire pressure light
- Is this repair quote fair? (free checklist)
Sources
- RepairPal: wheel bearing replacement cost
- RepairPal: wheel alignment cost
- NHTSA: check your vehicle for recalls
Also worth checking: open recalls on your vehicle (NHTSA, above) before paying for a repair. A recall repair is free at a dealer.
General information from someone with automotive sales and service-writer experience, not professional mechanical advice and not a substitute for an inspection by a qualified technician. Cost ranges are national averages from the sources listed and vary by vehicle, region and shop.