Spacers and Adapters

Table of Contents

• Differences Between Spacer Materials
• Aluminum vs. Steel Options
• Safety of Wheel Spacers and Adapters
• Choosing the Correct Spacer Size
• Measuring the Required Spacer or Adapter Thickness
• How to Measure the Hub Bore of a Wheel
• Do Wheel Studs Need to Be Trimmed?
• When to Use Extended Studs or Lug Bolts

Differences Between Spacer Materials?

Wheel Spacers

Wheel spacers add distance between the wheel's mounting pad and the vehicle’s hub. This adjustment can provide better clearance or create a wider stance. Spacer thickness varies based on individual vehicle needs and goals.

Thin spacers (less than an inch thick) typically fit onto stock studs, while thicker spacers may require extra hardware or additional studs. Spacers are often used to address clearance issues with components like brakes or tie rods. They’re also an economical way to achieve a wider stance without replacing the wheels.

To ensure safety, make sure at least 6-8 full threads are engaged when tightening lug nuts on thinner spacers.

Wheel Adapters

Wheel adapters not only widen the stance but also enable mounting wheels with a different bolt pattern. These adapters are generally thicker and must be bolted to the hub. Due to their design, adapters push the wheels outward, so checking for proper fender and caliper clearance is essential.

One-Piece vs. Two-Piece Adapters
Adapters come in one-piece or two-piece configurations:

• One-Piece: Used when the bolt pattern differs but the stud count remains the same.
• Two-Piece: Required when the bolt pattern and the number of studs are different.

Important Note: Adapters for converting from an 8-lug to a 6-lug pattern are not recommended due to safety concerns.

Aluminum Spacers vs. Steel Spacers

• Aluminum Spacers: Suitable for most vehicles, offering a high load rating (up to 30,000 lbs) and corrosion resistance due to their anodized finish.
• Steel Spacers: Best for heavy-duty applications, such as trucks towing significant loads or vehicles with over 1,000 horsepower. These are raw-finished and more expensive due to higher material and machining costs.

Safety of Wheel Spacers and Adapters?

When installed correctly, spacers and adapters are safe for use. However, they do place additional stress on components like axles, tie rods, and bearings.

Safety Tips:

1. Have spacers and adapters professionally installed by a trusted shop.
2. Use high-quality products from reputable manufacturers.
3. Avoid stacking spacers or adapters, as this increases the risk of slippage.
4. Use a calibrated torque wrench to secure bolts properly.
5. Ensure inner studs and lug nuts do not protrude beyond the adapter surface.

For more safety guidelines, visit our Contact Us Page.

Choosing the Correct Spacer Size?

Spacer size depends on factors like vehicle model, wheels, tires, and suspension setup. Proper measurements are essential for achieving the desired fitment.

If you need help determining the right size, Contact Us for a custom quote.

Measuring the Required Spacer or Adapter Thickness?

To measure spacer or adapter thickness:

1. Remove the wheel and place washers on the studs evenly.
2. Test fit the wheel, adjusting the number of washers until the desired spacing is achieved.
3. Measure the total washer width using a micrometer or caliper.

Caution: Do not drive with washers installed; this process is for measurement purposes only.

How to Measure the Hub Bore of a Wheel?

1. Use a micrometer or caliper to measure the inner diameter of the wheel hub bore.
2. Measure in millimeters (mm) for accuracy.
3. If ordering hub rings, the hub bore diameter is the outside measurement, while the vehicle hub diameter is the inside measurement.

Do Wheel Studs Need to Be Trimmed?

If the factory studs are longer than the spacer thickness, trimming may be necessary. This is especially common with spacers less than 1 inch thick or two-piece adapters. Always have stud trimming done professionally.

When to Use Extended Studs or Lug Bolts?

Extended hardware is needed for slip-on spacers too thick for stock studs. Cars typically require extended studs for spacers over 6mm, while trucks may need them for spacers over 0.375 inches.

Ensure you have a minimum of 6-8 full thread engagements for safe installation.

For additional questions or custom quotes, visit our Contact Us Page.