As an automotive expert with years of experience in the field, I've seen a variety of reasons that can cause a car to wobble. It's a common concern for drivers, and it's crucial to address it promptly to ensure safety and prevent further damage. Here's a detailed analysis of the potential causes:

Wheel Alignment Issues: When the wheels are not aligned correctly, it can cause the car to wobble, especially at higher speeds. Misalignment can result from hitting a pothole, curb, or due to wear and tear over time.

Tire Problems: A tire that is not properly inflated, has uneven wear, or is damaged can lead to wobbling. The most common cause, as you've mentioned, is a bent wheel or a tire that is slightly out of round. This can be due to an impact or manufacturing defect.

Brake Issues: Sometimes, uneven brake rotors or worn brake pads can cause a wobble, particularly when braking. The uneven friction can lead to a pulsating or vibrating sensation in the steering wheel or the entire vehicle.

Suspension Components: Worn or damaged suspension components such as shock absorbers, struts, or bushings can contribute to a wobble. These parts are designed to absorb impacts and keep the vehicle stable, and when they fail, it can affect the car's handling.

Drive Train Issues: Problems with the drive train, including the axles, CV joints, or universal joints, can cause a wobble, especially at higher speeds. These issues can be due to wear, damage, or poor lubrication.

Wheel Bearings: Worn wheel bearings can also cause a wobble. They are responsible for reducing friction between the wheel and the axle, and when they fail, it can result in a rough ride and a wobbling sensation.

Tire Balance: At higher speeds, as you've pointed out, tire balance becomes a significant factor. If the weight distribution across the tire is uneven, it can cause the wheel to wobble, leading to vibrations felt throughout the vehicle.

Steering System: Issues with the steering system, such as a loose or worn steering rack, can also lead to a wobble. The steering system is critical for maintaining control and stability, and any issues can affect the car's performance.

Body and Frame: In some cases, a car's body or frame might have been damaged in an accident or due to rust, leading to a misalignment that can cause a wobble.

Wheel and Tire Size Mismatch: If the wheels and tires are not the correct size for the vehicle, it can cause a wobble. This is because the vehicle's suspension and steering systems are designed to work with specific wheel and tire dimensions.

Axle Nuts and Lugs: Loose or improperly tightened axle nuts and lugs can cause a wobble, as they can lead to the wheels not being securely attached to the vehicle.

It's important to have a professional diagnose the issue, as some of these problems can be dangerous if not addressed. Regular maintenance and inspections can help prevent many of these issues and ensure a smooth and safe driving experience.

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The most common cause of vehicle wobbles in this speed range is a bent wheel or mildly out of round tire. Transmission and drive line issues can also show up in this range, but tires are the first thing to check. ... The most common cause of vehicle shakes at 50 mph or higher is tire balance.read more >>