Wheel Balancing vs Wheel Alignment Explained

Understanding Wheel Balancing and Alignment: Essential for a Smooth Drive

It's a common point of confusion for many motorists: is wheel balancing the same as tracking? While both services are vital for the optimal performance and longevity of your tyres, they address distinct issues. Understanding the difference between wheel balancing and wheel alignment is key to maintaining a safe, efficient, and comfortable driving experience. Merityre's guide delves into the specifics of each service, highlighting the tell-tale signs that your vehicle might need attention.

What Exactly is Wheel Balancing?

Wheel balancing is a process focused on ensuring that the weight of a vehicle's tyres is distributed evenly around the wheel assembly. When a tyre is manufactured, there can be slight variations in its weight distribution, and similarly, the wheel rim itself may not be perfectly uniform. These minor inconsistencies can lead to an imbalance in how the wheel rotates on the road. To counteract this, small, precisely placed weights, often made of lead or steel, are attached to the wheel's rim. These weights act as counterbalances, compensating for heavier spots on the tyre or wheel, thus ensuring that the wheel spins smoothly and evenly. Without proper balancing, an unbalanced wheel will wobble as it rotates, which can manifest as vibrations felt through the steering wheel or the car's body.

Signs Your Wheels Might Need Balancing

Several indicators can suggest that your vehicle's wheels are out of balance:

• Vibrations: The most common sign is a vibration, particularly noticeable in the steering wheel, which often increases with speed. You might also feel vibrations through the seat or the floor of the car.
• Uneven Tyre Wear: While often associated with alignment issues, significant imbalances can also contribute to unusual wear patterns on your tyres, such as cupping or flat spots.
• Increased Fuel Consumption: An unbalanced wheel creates more drag and requires the engine to work harder to maintain speed, potentially leading to a noticeable increase in fuel usage.
• Steering Wheel Vibrations While Stationary: Although less common, severe imbalances can sometimes cause vibrations even when the vehicle is not in motion, particularly if the engine is running at certain RPMs.
• Wear and Tear on Suspension Components: The constant wobbling from unbalanced wheels puts extra stress on your vehicle's suspension system, potentially accelerating wear on components like shocks, springs, and bearings.

When is Wheel Balancing Necessary?

Wheel balancing is crucial for several reasons. Firstly, it ensures a stable, safe, and smooth drive, eliminating the uncomfortable vibrations that can make long journeys tiring. Secondly, it directly contributes to the longevity of your tyres. By ensuring even contact with the road, balanced tyres are less prone to premature or uneven wear, saving you money on replacements in the long run. Furthermore, it reduces stress on your car's suspension and steering components, preventing costly repairs down the line and contributing to overall vehicle efficiency.

What is Wheel Alignment?

Wheel alignment, often referred to as 'tracking' in the UK, is a service that checks and adjusts the angles of your wheels to ensure they are positioned correctly relative to the road surface and each other. The primary goal is to make sure your tyres are pointing in the intended direction, parallel to each other and perpendicular to the ground. This involves adjusting the various angles of the wheels, such as camber, caster, and toe. These adjustments are typically made by altering the length of specific suspension components, such as the tie rods or control arms. Correct alignment is vital for predictable handling and to prevent your car from 'pulling' to one side.

Is Tracking the Same as Wheel Alignment?

Yes, in everyday automotive terminology, particularly in the UK, tracking is essentially the same as wheel alignment. The term 'tracking' historically referred to the alignment of only the front wheels, as older vehicles often had a fixed rear axle that couldn't be adjusted. Modern vehicles, however, have adjustable suspension on all four wheels, meaning a comprehensive wheel alignment service will typically adjust all four wheels to ensure they are all correctly positioned and pointing in the same direction. So, when you hear 'tracking,' think of the broader and more precise term: wheel alignment.

Causes of Wheel Misalignment

Several factors can lead to your wheels becoming misaligned, significantly impacting your car's safety and your driving experience:

• Impacts with Potholes: Driving forcefully into potholes or hitting kerbs can easily knock your wheels out of their precise alignment.
• Worn Suspension or Steering Components: Over time, components like ball joints, bushings, and steering racks can wear out. This looseness allows for unwanted movement in the wheels, leading to misalignment.
• Accidents or Collisions: Even minor bumps or fender-benders can affect the geometry of your suspension and steering system, resulting in misaligned wheels.
• Modifying Vehicle Height: Lowering or raising a vehicle without recalibrating the suspension geometry can cause misalignment.
• General Wear and Tear: The constant forces exerted on the suspension and steering systems during normal driving can gradually shift alignment settings.

Signs Your Wheels Need Alignment

Recognising the symptoms of misaligned wheels is crucial for preventing further damage and ensuring safety:

• Tyres Squealing: If your tyres make a squealing noise, especially when turning, it's often a sign that they are scrubbing against the road surface due to incorrect alignment.
• Uneven Tyre Wear: This is a hallmark of misalignment. You might see wear on the inner or outer edges of your tyres, or a feathered or scalloped pattern across the tread.
• Vehicle Pulling to One Side: If your car consistently drifts to the left or right when you're driving on a straight, level road, it's a strong indicator of a misalignment issue.
• Steering Wheel Vibration at Speed: While this can also be a sign of imbalance, persistent vibrations in the steering wheel when travelling at higher speeds can also point towards alignment problems.
• Crooked Steering Wheel: If your steering wheel is not centred when you are driving in a straight line, it's a clear visual cue that your alignment is off.

The Importance of Correct Alignment and Balancing

The consequences of neglecting wheel alignment and balancing can be significant. Incorrect alignment and balancing can:

• Damage Your Vehicle: Uneven tyre wear means you'll need to replace tyres more frequently, increasing costs. Misalignment also puts undue stress on suspension and steering components, potentially leading to premature failure and expensive repairs.
• Affect Car Safety: Misaligned wheels compromise your vehicle's handling and stability. This can make it harder to control the car, especially in emergency situations or adverse weather conditions, increasing the risk of accidents.
• Impact Driving Experience: Vibrations, pulling to one side, and poor handling all contribute to a less comfortable and more fatiguing driving experience.

Balancing vs. Alignment: A Summary

To summarise, here's a quick comparison:

Both wheel balancing and alignment are essential maintenance services that contribute to your vehicle's safety, performance, and economy. By understanding the signs and knowing when to seek professional help, you can keep your car running smoothly and efficiently for longer.

If you suspect your vehicle needs either a wheel balance or alignment check, don't hesitate. Book your free check at your nearest Merityre branch today and experience the difference a properly maintained wheel system can make.

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