Your vehicle should feel stable and smooth when traveling at highway speeds. If your steering wheel, seat, or entire car begins shaking once you reach 50, 60, or 70 mph, something isn’t working the way it should.
Sometimes the cause is as simple as a tire balance issue. In other cases, highway vibration can point to problems involving your wheels, suspension, brakes, or drivetrain.
At Catlett’s Auto Service & Towing in Davidsonville, MD, we’ve been helping Maryland drivers diagnose vehicle problems and stay safely on the road since 1976. If you’re wondering, “Why does my car shake at high speeds?”, here are several common causes worth investigating.
1. Your Tires Are Out of Balance
One of the most common causes of highway-speed vibration is an improperly balanced tire.
Even a relatively small weight difference becomes more noticeable as the wheel spins faster. That’s why you may not feel anything while driving around town but begin experiencing vibration once you reach highway speeds.
Possible symptoms include:
- Steering wheel vibration
- Shaking that begins around a particular speed
- Vibration that becomes stronger as speed increases
- Uneven or accelerated tire wear
Having your tires and wheels professionally inspected can determine whether balancing is contributing to the problem.
2. Uneven or Damaged Tires
A tire doesn’t necessarily need to be flat to cause problems.
Tires can develop uneven tread, internal damage, flat spots, or other defects that affect how smoothly they rotate.
Check your tires for:
- Uneven tread wear
- Bulges
- Cracks
- Unusual wear patterns
- Visible damage
A damaged tire can become a safety concern, so significant changes in vibration should never simply be ignored.
3. Wheel Alignment Problems
Your vehicle’s wheels need to maintain the proper angles relative to the road and one another.
Potholes, curbs, road debris, and normal suspension wear can contribute to alignment problems.
In addition to vibration, you may notice:
- Vehicle pulling left or right
- Crooked steering wheel
- Uneven tire wear
- Poor handling
Correcting alignment-related problems can help improve handling while protecting your tires from premature wear.
4. Worn Suspension Components
Your suspension system keeps your tires connected to the road while helping control vehicle movement.
As components wear, highway stability can suffer.
Potential problem areas include:
- Shocks and struts
- Ball joints
- Bushings
- Tie rods
- Control arms
You might also hear clunking noises, notice excessive bouncing, or feel that your vehicle doesn’t handle as confidently as it once did.
5. Wheel or Rim Damage
Maryland roads aren’t always forgiving. Hitting a deep pothole or curb can sometimes bend a wheel enough to create noticeable vibration.
Even if the damage isn’t immediately obvious, a wheel that no longer rotates correctly can create shaking at certain speeds.
If your vibration appeared shortly after hitting a significant pothole, mention that when having the vehicle inspected.
6. Brake Problems
If your vehicle primarily shakes when braking at highway speeds, the braking system deserves attention.
Brake-related vibration may be felt through:
- Steering wheel
- Brake pedal
- Floor
- Entire vehicle
Because your brakes are one of your vehicle’s most important safety systems, unusual vibration during braking should be inspected promptly.
7. Drivetrain or Axle Problems
Not every vibration originates with the tires.
Problems involving axles, CV joints, driveshaft components, or other drivetrain parts may also produce vibration.
Drivetrain-related shaking can sometimes become more noticeable during acceleration rather than simply at a particular road speed.
Professional diagnosis is important because several different problems can create similar symptoms.
Where You Feel the Vibration Can Provide a Clue
Pay attention to exactly where you notice the shaking.
If you primarily feel it through the steering wheel, the problem may be associated with components toward the front of the vehicle.
If you feel vibration through the seat or floor, the source may be elsewhere.
Also note whether the vibration happens:
- At one particular speed
- During acceleration
- While braking
- While turning
- Constantly
These details can help your technician narrow down the cause.
Is It Safe to Drive a Car That Shakes at High Speeds?
That depends on what’s causing the vibration.
The problem could be relatively minor, but there’s no reliable way to know without determining the source.
You should avoid continued highway driving if the shaking is severe or accompanied by:
- Steering difficulty
- Loud mechanical noises
- Tire damage
- Brake problems
- Vehicle pulling
- Burning smells
- Dashboard warning lights
If you aren’t confident the vehicle is safe to drive, having it towed is the safer choice.
Auto Repair in Davidsonville, MD
If your car shakes at highway speeds, don’t keep driving and hope the problem disappears.
Catlett’s Auto Service & Towing in Davidsonville, Maryland provides comprehensive automotive service and diagnostics for cars and trucks. Whether the problem involves tires, steering, suspension, brakes, or another vehicle system, identifying the actual cause is the first step toward fixing it correctly.
Catlett’s also provides preventative maintenance, computer diagnostics, brake work, oil changes, and Maryland State Inspections.
And when your vehicle isn’t safe to drive, our 24/7 towing and roadside assistance services can help with local and long-distance towing, dead batteries, tire changes, lockouts, and fuel delivery.
Get That Highway Vibration Checked
A car shaking at 60 or 70 mph isn’t something you should simply learn to live with. Vibrations are often your vehicle’s way of telling you that a tire, wheel, suspension, brake, or drivetrain component needs attention.
Catching the cause early can improve your vehicle’s handling, protect other components from unnecessary wear, and help prevent a roadside breakdown.
For dependable auto repair in Davidsonville, MD, trust Catlett’s Auto Service & Towing. Since 1976, Catlett’s has provided Maryland drivers with honest service and quality automotive care to help keep their vehicles safe and dependable on local roads and highways.