23/01/2012
Your car's wheel alignment is a crucial aspect of its overall performance and safety. It refers to the angles of your wheels relative to the ground and to each other. When your wheels are properly aligned, they sit straight and are parallel, allowing your vehicle to drive smoothly and predictably. However, over time, various factors can knock your wheels out of alignment, leading to a range of issues from uneven tyre wear to compromised handling. Understanding when to get a wheel alignment check is key to maintaining your vehicle's health and ensuring your safety on the road.

What is Wheel Alignment?
Before delving into when to check it, let's briefly define what wheel alignment entails. It involves adjusting the angles of the wheels to the manufacturer's specifications. The primary angles adjusted are:
- Camber: The angle of the wheel's tilt inwards or outwards when viewed from the front.
- Caster: The angle of the steering axis when viewed from the side. It affects steering stability.
- Toe: The angle of the wheels inwards or outwards when viewed from above. It's like looking at your feet from your perspective; if your toes point inwards, it's 'toe-in,' and if they point outwards, it's 'toe-out.'
These angles work together to ensure your vehicle tracks straight, steers correctly, and maintains optimal contact with the road surface. Even minor deviations can have significant consequences.
Signs Your Car Needs a Wheel Alignment
Your vehicle will often give you clear indications when its wheel alignment is off. Being aware of these signs can save you money on premature tyre replacements and prevent more serious issues. Here are the most common indicators:
1. Uneven Tyre Wear
This is arguably the most prominent sign of misaligned wheels. If your tyres are wearing out faster than expected, or if you notice specific patterns of wear, it's highly likely your alignment is off. Common patterns include:
- Feathering: Where the edges of the tread blocks are worn smooth on one edge and sharp on the other.
- Scalloping or Cupping: Where patches of the tyre tread are worn down, often in a circular or semi-circular pattern.
- Inner or Outer Edge Wear: If the inside or outside edge of your tyre is significantly more worn than the rest of the tread.
Significant tyre wear can drastically reduce tyre lifespan and compromise grip, especially in wet conditions.
2. Vehicle Pulling to One Side
If your car consistently drifts to the left or right when you're driving on a straight and level road, and you're not holding the steering wheel straight, your alignment is almost certainly the culprit. This phenomenon is often referred to as 'pulling.' It's important to distinguish this from a road that is crowned (sloped to drain water), which can naturally cause a slight pull.
3. Crooked Steering Wheel
When your wheels are properly aligned, your steering wheel should be centred when you're driving straight. If you notice that your steering wheel is turned to one side while you're driving in a straight line, it's a clear indicator that your alignment needs adjustment. This can be distracting and make it harder to judge your vehicle's direction.
4. Steering Wheel Vibration
While vibrations can be caused by unbalanced wheels or worn tyres, misaligned wheels can also contribute to a shaky steering wheel, particularly at higher speeds. If you feel a tremor or vibration through the steering wheel that wasn't there before, it's worth investigating your alignment.
5. Squealing Tyres
If your tyres are making unusual squealing noises, especially when you're turning, it could be a sign of misalignment. This happens because the tyres are being forced to drag or scrub against the road surface due to incorrect angles, rather than rolling smoothly.
When to Schedule a Professional Alignment Check
Beyond the obvious signs, there are specific events and routine maintenance schedules that warrant a professional wheel alignment check. Consider booking an appointment in the following situations:
1. After Replacing Steering or Suspension Components
Any work done on your steering or suspension system, such as replacing tie rods, ball joints, shocks, struts, or springs, will almost certainly affect your wheel alignment. It's standard practice to get an alignment check after these repairs to ensure everything is set correctly and to prevent premature wear on new parts and tyres.
2. After an Impact or Accident
Even a minor collision, hitting a large pothole, or driving over debris can be enough to knock your wheels out of alignment. If you've experienced any such incident, it's wise to have your alignment checked as soon as possible. Ignoring it can lead to ongoing driving difficulties and increased repair costs down the line.
3. After Replacing Tyres
While not always strictly necessary, it's a good idea to have your alignment checked when you fit new tyres. This ensures that your new tyres wear evenly from the start, maximising their lifespan and performance. It's an investment that pays off by preserving your new tyre investment.
4. Routine Maintenance Schedule
Most manufacturers recommend a wheel alignment check at specific intervals, often every 10,000 to 15,000 miles, or at least once a year. However, this can vary depending on your vehicle and driving conditions. Consulting your owner's manual is the best way to determine the recommended schedule for your car.
The Importance of Proper Wheel Alignment
Maintaining proper wheel alignment is not just about avoiding tyre wear; it contributes significantly to your overall driving experience and vehicle longevity. Here's why it's so important:
1. Tyre Longevity
As mentioned, misaligned wheels cause tyres to wear unevenly and prematurely. Proper alignment ensures that your tyres make consistent contact with the road, leading to longer tyre life and saving you money on replacements.
2. Improved Fuel Efficiency
When your wheels are misaligned, they create more rolling resistance. This means your engine has to work harder to maintain speed, leading to increased fuel consumption. Correcting the alignment can help you achieve better mileage.
3. Enhanced Handling and Safety
Properly aligned wheels contribute to stable and predictable handling. Your car will steer more accurately, respond better to your inputs, and maintain stability, especially during cornering or emergency manoeuvres. This directly impacts your safety and the safety of others on the road.
4. Reduced Strain on Suspension Components
Misalignment can put undue stress on various steering and suspension components, potentially leading to premature wear and tear on these parts as well. Keeping your alignment in check helps protect your entire steering and suspension system.
What to Expect During an Alignment Check
When you take your vehicle for an alignment check, a qualified technician will use specialised equipment to measure the current angles of your wheels. Modern alignment machines use laser or infrared beams and target sensors mounted on each wheel. The technician will compare these readings to the manufacturer's specifications for your specific vehicle model. If any angles are outside the acceptable range, they will make the necessary adjustments to bring them back into spec. The process typically involves adjusting tie rods and other components to correct the camber, caster, and toe angles.
DIY vs. Professional Alignment
While some minor adjustments might seem feasible for a DIY enthusiast, it's strongly recommended to leave wheel alignment to the professionals. Achieving precise alignment requires specialised knowledge, tools, and equipment that most home mechanics do not have access to. Incorrect adjustments can worsen the problem, leading to more significant tyre wear and handling issues.
Conclusion
Paying attention to the subtle (and not-so-subtle) signs your car exhibits is key to maintaining its performance and your safety. Uneven tyre wear, pulling to one side, and a crooked steering wheel are all strong indicators that it's time for a wheel alignment check. Combine this awareness with adherence to your vehicle's recommended maintenance schedule and professional advice, and you'll ensure your car handles beautifully, your tyres last longer, and your journeys are safer.
Frequently Asked Questions
Q1: How often should I get my wheel alignment checked?
It's generally recommended to have your wheel alignment checked every 10,000 to 15,000 miles or at least once a year. However, it's best to consult your vehicle's owner's manual for the specific recommendation for your car. You should also get it checked if you notice any of the signs mentioned in this article or after any impact or repair to the steering/suspension system.
Q2: Can I fix wheel alignment myself?
While some minor adjustments might be possible with basic tools, achieving a precise and correct wheel alignment typically requires specialised equipment and expertise. For the best results and to avoid causing further damage, it is highly recommended to have a professional technician perform the alignment.
Q3: What happens if I don't get my wheel alignment checked?
If you ignore signs of misaligned wheels, you risk accelerated and uneven tyre wear, reduced fuel efficiency, poor handling and steering control, and increased strain on your steering and suspension components, potentially leading to more costly repairs.
Q4: Does hitting a pothole really affect wheel alignment?
Yes, hitting a pothole, even one that doesn't seem severe, can be enough to knock your wheels out of alignment. The sudden impact can shift suspension and steering components, altering the angles of your wheels.
Q5: How long does a wheel alignment typically take?
A standard wheel alignment check and adjustment typically takes between 45 minutes to 1.5 hours, depending on the vehicle and the complexity of the adjustments needed.
If you want to read more articles similar to When to Get Your Wheel Alignment Checked, you can visit the Maintenance category.
