What Exactly is Car Wheel Tracking?
Car wheel tracking, often referred to as wheel alignment, is the process of adjusting your vehicle's suspension so that the wheels are set to the optimal angles. These angles determine how your wheels interact with the road surface, impacting steering response, tyre wear, and overall vehicle stability. When your car's tracking is correct, all wheels point in the same direction and are perpendicular to the ground, ensuring a smooth and predictable drive.
- Alignment ensures wheels are correctly angled to the road and each other.
- Correct tracking prevents uneven tyre wear.
- It improves steering precision and vehicle stability.
- Misalignment can affect fuel efficiency.
Imagine your car's wheels are like your feet when you walk. If one foot is constantly turned inwards or outwards, it would cause you to walk unevenly and could lead to discomfort or injury. Similarly, misaligned wheels force your tyres to drag or scrub sideways as you drive, leading to premature wear and affecting how your car handles.
Key angles adjusted during wheel alignment include camber, caster, and toe. Camber is the inward or outward tilt of the tyre when viewed from the front. Caster is the forward or backward tilt of the steering axis when viewed from the side, affecting steering stability. Toe refers to the degree to which the tyres turn inward or outward when viewed from above, similar to the 'toeing' of a person's feet.
Understanding these fundamental angles helps appreciate why professional adjustment is necessary. It’s not just about making the car go straight; it’s about ensuring all forces acting on the tyres and suspension are balanced.
Why is Proper Wheel Alignment So Important?
The consequences of ignoring car wheel tracking issues extend beyond mere inconvenience. A properly aligned vehicle offers tangible benefits that contribute to your safety and your wallet. The most immediate and noticeable impact of poor alignment is on your tyres.
When your wheels are not tracking correctly, tyres are subjected to uneven pressure. This often manifests as feathering (where the tyre tread is worn down on one edge) or cupping (where patches of tread wear away faster than others, creating a hollowed appearance). Such wear significantly reduces the lifespan of your tyres, meaning you’ll need to replace them more frequently. This is particularly costly if you’ve invested in premium or specialised tyres, such as winter tyres or all season tyres.
Uneven tyre wear is a primary indicator of tracking problems.
Beyond tyre longevity, alignment directly affects your car's handling and safety. If your steering wheel feels loose, pulls to one side, or vibrates, it's a strong signal that your wheel tracking needs checking. When a car consistently pulls to one side, you may unconsciously compensate by applying counter-pressure on the steering wheel, leading to driver fatigue on longer journeys. In critical situations, such as sudden braking or swerving to avoid an obstacle, unpredictable handling due to poor alignment could compromise your ability to maintain control.
Furthermore, misaligned wheels can increase rolling resistance. This means your engine has to work harder to maintain speed, which translates into higher fuel consumption. While the individual impact might seem small, over time, this can add up, making fuel efficiency a significant concern.
Inspect your tyres regularly for uneven wear patterns. Look for scalloping or feathering on the edges of the tread. This visual cue can alert you to tracking issues before they become severe and more expensive to fix.
In essence, maintaining correct wheel alignment is a proactive measure for vehicle safety, tyre economy, and overall driving comfort.
Signs You Need Car Wheel Tracking Adjustment
Recognising the signs that your car needs wheel tracking adjustment can save you money and prevent potential safety hazards. Often, the car itself will provide clues if its alignment is off. Paying attention to how your vehicle behaves during normal driving conditions is key.
Common Indicators of Misalignment
- Steering Wheel Pulling: The most common symptom is the vehicle pulling to one side when the steering wheel is held straight. This can be subtle or pronounced.
- Uneven Tyre Wear: As mentioned previously, rapid or uneven wear on your tyres is a strong indicator. Check for wear on the inner or outer edges, or patches of worn tread.
- Crooked Steering Wheel: If your steering wheel is off-centre when you’re driving in a straight line, this suggests a tracking problem.
- Vibrations: You might feel vibrations through the steering wheel or the car's body, especially at higher speeds.
- Poor Steering Response: The car may feel sluggish to respond to steering inputs, or the steering might feel loose or imprecise.
- Drifting: The vehicle may drift or wander rather than maintaining a straight path.
If you've recently hit a significant pothole, a kerb, or been involved in a minor collision, it’s advisable to have your car’s wheel tracking checked as a precaution, even if no immediate symptoms are apparent. These impacts can easily knock the suspension geometry out of its designed parameters.
It is far more economical to address minor tracking deviations promptly than to endure premature tyre replacement and potential suspension wear.
When you take your vehicle for a wheel alignment service, a qualified technician will use specialised equipment to measure and adjust the suspension angles. They will compare these readings against the manufacturer's specifications for your specific vehicle model.
Always inform your mechanic of any recent incidents, like hitting a pothole. This detail can help them diagnose the problem more accurately and focus their inspection on the affected areas of the suspension.
The process typically involves adjustments to the tie rods, which connect the steering rack to the steering arms on the wheels. These adjustments allow for precise control over the toe settings. Camber and caster angles may also be adjustable on some vehicles, though these are often set by the geometry of the suspension components themselves and may require part replacement if significantly out of specification.
What to Expect from a Wheel Tracking Service
When you book a car wheel tracking service, expect a thorough inspection and precise adjustments. The process is designed to restore your vehicle's optimal handling characteristics and maximise tyre life.
The Alignment Process
A professional alignment usually involves several key steps:
- Vehicle Inspection: The technician will first inspect your suspension and steering components for any signs of wear or damage, such as worn bushings, ball joints, or damaged shock absorbers. They'll also check the condition of your tyres, ensuring there are no pre-existing issues that might affect the alignment readings or be exacerbated by it.
- Computerised Measurement: Your car will be placed on a level platform, and specialised sensors are attached to each wheel. These sensors communicate with a computerised alignment machine, which displays the current angles of your wheels (camber, caster, toe) relative to the vehicle's chassis and the road.
- Adjustment: Based on the readings and your vehicle's manufacturer specifications, the technician will make the necessary adjustments. This typically involves altering the length of the tie rods to correct the 'toe' angles. If other adjustable components are present and out of spec, they will be addressed.
- Re-measurement and Verification: After adjustments are made, the sensors are used again to confirm that all angles are within the manufacturer's specified tolerances. The technician will provide you with a report detailing the 'before' and 'after' measurements.
The entire procedure usually takes between 30 minutes to an hour, depending on the complexity of the vehicle's suspension and whether any seized or damaged components require attention. It’s worth noting that some vehicles, particularly older ones or those with significant wear, may have non-adjustable suspension components. In such cases, if an angle is significantly out of specification, it might indicate worn parts that need replacing before alignment can be properly carried out.
For instance, if the camber angle is incorrect on a vehicle where it's not adjustable, a worn wishbone bush or a bent suspension arm could be the cause. Addressing these underlying mechanical issues is crucial for a lasting alignment. Similarly, if you have a spare tyre that is frequently used, ensure it is also in good condition and correctly inflated before any alignment checks, as its condition could skew readings if it were to be measured.
A proper alignment report should clearly show the target specifications and the actual measurements.
Following the alignment, you should notice an immediate improvement in steering and handling. If you still experience issues, it's important to return to the garage to discuss it. A reputable service provider will stand by their work and re-check the alignment if necessary.