There are various bolt patterns of GMC wheel spacers. The most common lug patterns are 6x120mm (like the Acadia, and Canyon), 6×139.7mm (like the Sierra 1500, Yukon, and Sierra 1500), 8×165.1mm (like the Savana 2500, Sierra 2500HD), 8x180mm, and 8x210mm (like the Sierra 3500HD). Vehicle-specific GMC spacers can indeed fit perfectly and work safely. They are machined to fit the specific vehicle hub. However, GMC wheel adapters are very useful to convert a bolt pattern into another bolt pattern.

For example, you can turn a 6x120mm bolt pattern into 6×139.7mm. This is done by installing a 6×120 to 6×139.7 adapter on the vehicle hub. The wheel adapter becomes an extension of your vehicle hub, so you can install 6×139.7mm wheels safely. Many tire shops will sell wheels together with wheel adapters. For decades, adapters have been applied widely and successfully in numerous cases. As long as you get quality ones, you can run GMC conversion wheel spacers with no problems.

What Are Quality GMC Wheel Spacers Made Of?

With wheel spacers, there is nothing that physically stops the size of the modification. When choosing quality spacers for performance upgrades, aluminum types come as a priority. BONOSS forged active cooling GMC rim spacers are made of forged 6061-T6 and 7075-T6 aluminum alloys. Because of good thermal conductivity, these aluminum wheel spacers will dissipate brake heat better. This is good for rims or brakes. They feature nicer designs that add both style and function. Apart from the base functions of spacers, BONOSS forged active cooling GMC wheel spacers provide more practical advantages.

What is GMC Wheel Spacer Bolt Pattern BONOSS Forged Active Cooling Hubcentric 6x139.7 Spacers Before and After CHZ

The best advantage of this is the active cooling function. There are petal-shaped grooves carved on the back sides. These heat dissipation grooves allow the external cold air to flow continuously inside the wheel spacer when it rotates. The air takes away the heat, so it achieves the purpose of actively dissipating heat for the braking system. These BONOSS forged active cooling wheel spacers help make brake cooling better. If you pursue extreme performance, then a set of BONOSS forged active cooling GMC wheel spacers is well worth the investment.

Can GMC Wheel Spacers Affect Fail?

As long as you torque each wheel nut correctly, genuine brand GMC wheel spacers won’t fail easily. They are upgrading parts to give your GMC cars better performance as well as a unique look, especially if you’re taking it to off-roading events. To ensure a stable and firm wheel connection, a BONOSS forged active cooling GMC wheel spacer kit comes with ISO grade 12.9 wheel studs (tensile strength over 1220 MPa) and ISO grade 10 wheel nuts (proof load over 1,100 MPa). Even facing impacts, these wheel fasteners are not easy to break.

What’s better, these BONOSS forged active cooling GMC wheel spacers come with full-cone lug seats. Full-cone seat design provides a larger contact area, more force acreage, and better fitting. This allows the studs and nuts to apply enough clamping force to lock the BONOSS forged active cooling GMC wheel spacers, avoiding any potential loosening risks. In that case, the axle-spacer-wheel connection can be fastened firmly, meaning no vibration, fewer stress loads, higher safety, and a longer service life range.

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