Understanding 8x170 Hub Centric Wheel Spacers
8x170 hub centric wheel spacers are precision-engineered components designed to widen your vehicle's track width, often to accommodate larger tires or achieve a more aggressive stance. Unlike universal spacers, hub centric designs feature a center bore that precisely matches your vehicle's hub diameter, ensuring the wheel is centered perfectly. This design is critical for maintaining proper balance and reducing vibration, especially on vehicles with the 8x170 bolt pattern, common on many heavy-duty Ford and Chevrolet trucks.
- Hub centric design centers wheels precisely on the vehicle hub.
- Widens track width for tire clearance and aesthetics.
- Crucial for stability and reducing vibration issues.
- Ideal for vehicles with the 8x170 bolt pattern.
The primary function is to move the wheel assembly outward from the hub, creating more clearance between the tire and suspension components. This is particularly useful when upgrading to larger tires that might otherwise rub on control arms or fenders. Furthermore, a wider track width can enhance vehicle stability, especially during cornering or when towing heavy loads, by increasing the leverage the suspension has against body roll.
When considering these spacers, understand that 'hub centric' refers to the centering feature that aligns with the vehicle's wheel hub, not the lug holes. This is a vital distinction from 'lug centric' spacers, which rely solely on the lug nuts for centering. For 8x170 applications, a hub centric approach is generally preferred for safety and drivability.
Key Components and Functionality
These spacers are typically made from strong materials like T6 aluminum or forged steel. The thickness varies, with common sizes ranging from 1.5 inches to 2 inches, though thicker options exist. The 8x170 bolt pattern means there are 8 lug holes spaced at 170mm. The critical measurement for hub centricity is the hub bore diameter, which must match the vehicle's hub. For instance, a specific 8x170 hub centric wheel spacer might have a 126mm hub bore, designed to fit a Ford Super Duty hub. Using the correct hub bore size prevents wobbling and stress on your wheel bearings.
The mechanism relies on the spacer mounting flush against the vehicle's hub face. Your wheel then mounts onto the protruding studs of the spacer, or sometimes into counterbored holes if the spacer has integrated studs. This ensures that both the spacer and the wheel are properly centered, distributing load evenly across the hub and bearings. This precision is paramount for long-term reliability and preventing premature wear.
It is imperative to acknowledge that not all spacers are created equal. Material quality and manufacturing tolerances significantly impact performance and safety. Our analysis indicates that properly manufactured, hub centric spacers for the 8x170 pattern offer a significant advantage in terms of alignment and stress reduction compared to lug centric alternatives.
Advantages of 8x170 Hub Centric Wheel Spacers
The primary benefit of installing 8x170 hub centric wheel spacers is the immediate visual improvement and functional enhancement they provide. By pushing the wheels outward, they create a more aggressive, planted stance that many truck owners desire, making the vehicle look more robust and capable.
Enhanced Stability and Tire Clearance
Beyond aesthetics, these spacers significantly improve vehicle stability. Widening the track width increases the vehicle's wheelbase laterally, which enhances resistance to body roll during turns and provides a more planted feel on the highway. This is especially valuable for trucks that are frequently used for towing or carrying heavy payloads. Understanding this principle is fundamental to appreciating their performance benefits.
Furthermore, they are indispensable when fitting larger or wider tires. If your tire choice is just slightly too large to clear suspension components, such as the 8x6.5 2 inch wheel spacers that might be needed on some applications, these spacers can solve the rubbing issue without requiring more complex suspension modifications. This practical application is a major driver for their adoption.
The hub centric nature is the key differentiator. It ensures that the wheel's center bore perfectly aligns with the vehicle's hub, eliminating the slight wobble or vibration that can occur with universal, lug centric spacers. This precise fit minimizes stress on wheel studs, bearings, and the entire hub assembly, which is critical for the longevity of these components on heavy-duty trucks.
Verify the exact hub bore diameter of your vehicle before purchasing spacers. While the 8x170 bolt pattern is standard, the hub bore size can vary slightly between manufacturers or models, and a mismatch will negate the benefits of a hub centric design.
This mechanism is critical for preventing premature wear on wheel bearings.
They provide a tangible improvement in both visual appeal and dynamic stability, making them a worthwhile upgrade for many truck owners.
Potential Drawbacks and Installation Considerations
What are the downsides to consider before bolting on 8x170 hub centric wheel spacers? While beneficial, they aren't without potential complications. The most significant concern is the added stress placed on your vehicle's wheel bearings and suspension components. Pushing the wheels further out increases leverage, which can accelerate wear, especially if the spacers are low quality, too thick, or if the vehicle is regularly subjected to extreme conditions or off-roading.
Common Issues and Installation Pitfalls
Improper installation is a frequent source of problems. If the mounting surfaces are not clean and flat, or if the lug nuts are not torqued to specification in a star pattern, the spacers can shift, leading to vibrations and potential failure. It is imperative to acknowledge that the torque specifications for the nuts holding the spacer to the hub, and the wheel to the spacer, are often different and must be followed precisely. If you're unsure how to install wheel spacers, seeking professional help is advisable.
Another consideration is that many spacers will require longer wheel studs. If the spacer is thicker than the original stud length, your existing studs won't protrude enough to safely engage the lug nuts on your wheel. This means you'll need to purchase spacers that come with integrated studs or buy extended studs separately, adding to the overall cost and complexity of the installation. Such precision is paramount when selecting hardware.
While this article focuses on 8x170 hub centric wheel spacers, it's worth noting that incorrect application of spacers can cause issues. For example, attempting to use 5x4.75 wheel spacers or 5x4 wheel spacers on an 8x170 bolt pattern would be impossible due to the vastly different stud counts and bolt circle diameters, and could damage both the wheel and the hub.
Regularly re-torque your lug nuts after installing spacers. It's good practice to check torque after the first 50-100 miles and then periodically thereafter, as vibrations can cause them to loosen.
Our analysis indicates that using spacers thicker than 2 inches on daily drivers can significantly shorten wheel bearing life, especially on lighter-duty trucks.