31/12/2003
Understanding Wheel Alignment with Trakrite
Maintaining proper wheel alignment is crucial for the longevity of your tyres, the safety of your driving experience, and the overall performance of your vehicle. Misaligned wheels can lead to uneven tyre wear, pulling to one side, and a decrease in fuel efficiency. Fortunately, tools like the Gunsons G4008 Trakrite Wheel Alignment Gauge offer a straightforward and accurate method for checking this vital aspect of your car's setup. This article will delve into what Trakrite is, how it operates, and why it's an indispensable gadget for any car enthusiast or diligent vehicle owner.
What is Trakrite?
Trakrite, specifically referring to the Gunsons G4008 Trakrite Wheel Alignment Gauge, is a pioneering device designed to measure the alignment of the steered wheels on cars and light commercial vehicles. Its reputation is built on its simplicity and remarkable accuracy. At its core, Trakrite is a roller bearing platform. This platform is ingeniously designed to allow one of the front wheels to be slowly driven over it while the vehicle's wheels are positioned in their straight-ahead orientation. The magic happens as the wheel moves, and the Trakrite gauge provides a clear indication of any deviations from perfect alignment.
How Does Trakrite Work?
The operation of the Trakrite gauge is elegantly simple yet highly effective. Here's a breakdown of the process:
- Preparation: The vehicle is positioned on a level surface. The Trakrite gauge is placed in front of one of the steered wheels, typically a front wheel. It's essential that the surface is flat and free of obstructions for accurate readings.
- Positioning the Wheel: The front wheel in question is slowly and carefully driven onto the Trakrite platform. The key is to move the vehicle forward just enough so that the tyre sits centrally on the roller bearing platform.
- Straight-Ahead Alignment Check: With the wheel resting on the platform, the vehicle is gently nudged forward a very small distance. This minimal movement allows the rollers within the Trakrite gauge to rotate freely.
- Reading the Gauge: The Trakrite gauge features a clear, easy-to-read indicator. As the wheel moves over the rollers, any toe-in or toe-out (the angle at which the wheels point inwards or outwards) will cause the rollers to rotate. The extent and direction of this rotation are then translated into a visual reading on the gauge. A perfectly aligned wheel will result in minimal or no roller movement, indicating that the wheel is tracking straight.
- Repeat for Other Wheels: For a comprehensive alignment check, this process is repeated for the other steered wheel. This ensures that both front wheels are correctly aligned with each other and the vehicle's chassis.
The beauty of Trakrite lies in its direct measurement of the wheel's tendency to turn. It doesn't rely on complex electronic sensors or calibration procedures, making it accessible for home mechanics and professional workshops alike. The core principle is that if a wheel is pointing straight, it will roll smoothly over the rollers without inducing any significant rotation. If there's a toe angle, the tyre's contact patch will push against the rollers, causing them to spin.
Why is Wheel Alignment Important?
Understanding how Trakrite works is one thing, but grasping the 'why' behind wheel alignment is equally important. Here are the primary reasons:
- Tyre Wear: This is arguably the most significant benefit. Misaligned wheels force tyres to scrub or drag across the road surface rather than rolling smoothly. This leads to rapid and uneven tyre wear, often manifesting as feathering or scalloping on the tyre tread. Correct alignment ensures that the entire width of the tyre tread makes contact with the road, maximising its lifespan.
- Handling and Steering: Proper alignment contributes to the vehicle's stability and responsiveness. If your wheels are out of alignment, you might experience the car pulling to one side, requiring constant steering correction. This can be fatiguing on long journeys and compromises the vehicle's ability to track straight.
- Fuel Efficiency: While the effect might seem minor, misaligned wheels increase rolling resistance. The tyres are essentially fighting against each other, which means the engine has to work harder to maintain speed. This translates to a noticeable, albeit sometimes small, increase in fuel consumption.
- Safety: In critical situations, such as emergency braking or sharp turns, correctly aligned wheels ensure that the vehicle behaves predictably. Misalignment can exacerbate instability, making it harder to control the vehicle, particularly in adverse weather conditions.
Trakrite vs. Other Alignment Methods
The automotive world offers various methods for checking and adjusting wheel alignment, from sophisticated laser alignment systems to string and level methods. The Trakrite gauge occupies a unique position due to its balance of simplicity and accuracy.
| Method | Pros | Cons | Ideal For |
|---|---|---|---|
| Trakrite Gauge | Simple to use, accurate for toe, relatively inexpensive, portable. | Primarily measures toe, less comprehensive for camber/caster, requires level surface. | Home mechanics, quick checks, basic toe adjustment verification. |
| String & Level Method | Very inexpensive, can be done at home with basic tools. | Less precise, can be affected by tyre shape and surface imperfections, time-consuming. | DIY enthusiasts on a tight budget, basic front-end toe checks. |
| Laser Alignment Systems | Highly accurate, measures all angles (toe, camber, caster), quick setup, provides printouts. | Expensive, requires professional training and equipment, needs calibration. | Professional workshops, full geometric alignment checks and adjustments. |
The Trakrite gauge is particularly favoured for its ability to provide a definitive reading of the toe angle without the need for complex setup. While professional laser systems offer a more complete picture of all alignment angles, the Trakrite is excellent for confirming or diagnosing issues specifically related to toe-in or toe-out, which is often the primary culprit behind steering pull and uneven tyre wear.
Common Causes of Wheel Misalignment
Several factors can lead to your vehicle's wheels becoming misaligned:
- Impacts: Hitting potholes, kerbs, or debris on the road can jolt suspension components and knock the wheels out of their intended alignment.
- Wear and Tear: Over time, suspension and steering components, such as ball joints, tie rod ends, and bushings, can wear out. This wear creates play in the system, allowing the wheels to move from their correct position.
- Altering Suspension: Fitting new springs, shock absorbers, or other suspension modifications can alter the vehicle's geometry, potentially requiring an alignment check.
- Accidents: Even minor collisions can affect the alignment of your wheels.
Signs Your Car Needs an Alignment Check
Don't wait for significant tyre wear to prompt an alignment check. Be aware of these common symptoms:
- Car Pulls to One Side: If you release the steering wheel momentarily and the car drifts noticeably to the left or right.
- Uneven Tyre Wear: Observing wear on the inner or outer edges of your tyres, or feathering across the tread.
- Vibrations: Feeling vibrations through the steering wheel, especially at higher speeds.
- Crooked Steering Wheel: The steering wheel is not centred when the car is driving straight.
- Squealing Tyres: Tyres making a squealing noise when turning, even at low speeds, can indicate misalignment.
Frequently Asked Questions (FAQs)
- Q1: Can I adjust my wheel alignment myself using Trakrite?
- A1: The Trakrite gauge is a diagnostic tool. It tells you if your alignment is off. While it helps identify the problem, the actual adjustment of alignment angles (toe, camber, caster) typically requires specific tools and knowledge of your vehicle's suspension system. It's often best left to a qualified mechanic.
- Q2: How often should I check my wheel alignment?
- A2: It's recommended to check your wheel alignment at least once a year, or whenever you notice any of the symptoms mentioned above. It's also a good idea to check it after hitting a significant pothole or kerb.
- Q3: Does Trakrite measure camber and caster?
- A3: The Trakrite gauge is primarily designed to measure toe (the angle of the wheels relative to the car's longitudinal axis). It does not directly measure camber (the vertical tilt of the wheel) or caster (the angle of the steering axis). For a full geometric alignment, a more comprehensive system is required.
- Q4: Is Trakrite suitable for all vehicles?
- A4: The Gunsons G4008 Trakrite is designed for cars and light commercial vehicles. Its effectiveness depends on the tyre size and the ability to place the gauge on a level surface. Always check the product specifications for compatibility with your vehicle.
Conclusion
The Gunsons G4008 Trakrite Wheel Alignment Gauge is an excellent tool for anyone looking to monitor and maintain the health of their vehicle's steering and suspension. Its ease of use, accuracy in measuring toe, and affordability make it a standout option for both DIY enthusiasts and professional mechanics. By understanding how Trakrite works and the importance of proper wheel alignment, you can take proactive steps to ensure safer driving, extend the life of your tyres, and enjoy a more efficient and comfortable ride. Regularly checking your alignment is a small effort that yields significant benefits for your vehicle's performance and your peace of mind.
If you want to read more articles similar to Trakrite: Your Guide to Wheel Alignment, you can visit the Automotive category.