The most popular 1 inch spacers sizes are 5×114.3mm, 5x112mm, 5x120mm, 5x115mm, 5x108mm, 5x100mm, 5x127mm, 6×139.7mm, 6x135mm, 4×114.3mm, 4x108mm, 4x100mm, and more. For some wheel adapters, there may be two different bolt pattern sizes. For example, a 5×120 to 5×114.3 wheel adapter comes with two PCD sizes, which allow you to put 5×114.3mm wheels on a 5×120 vehicle hub quickly and safely.

A 1-inch spacer means the wheel will sit 1 inch further away from the assembly hub, which pushes the wheel outward, giving it a more aggressive stance. This outward movement effectively reduces the positive wheel offset. For example, if your wheels have a positive offset of +35mm, and you add a 1-inch (approximately 25.4mm) spacer, you are subtracting 25.4mm from the wheel’s offset. This means the new offset would be +9.6mm.

What Size 1 Inch Spacers Are Best BONOSS Forged Active Cooling Adapters Hubcentric Spacers Before and After Example CHZ (1)

1 Inch Spacers Pros and Cons

Nicer Wheel Style:
Many vehicle enthusiasts use 1-inch spacers primarily for aesthetic reasons. In most cases, 1-inch wheel spacers provide a perfect flush stance for cars, SUVs, compact trucks, and some ATVs. A broader wheel style can make your vehicle look sportier and more attractive.

Enhanced Stability:
By widening the track, 1-inch spacers can improve the overall stability of the vehicle. The wider stance increases the vehicle’s grip on the road or trail, which can be beneficial for both on-road driving and off-road adventures.

Proper Clearance:
If you plan to add wider tires or larger brake calipers, 1 inch spacers can help prevent the wheels from rubbing against the fenders or any other suspension components.

Custom Fitment:
1 inch spacers provide more flexibility in terms of wheel and tire combinations. If you have aftermarket wheels that come with wrong offset, 1-inch spacers can fix the offset to achieve the perfect fitment.

What Size 1 Inch Spacers Are Best BONOSS Forged Active Cooling Adapters Hubcentric Spacers Before and After Example CHZ (3)

How to Choose the Best 1 Inch Spacers?

The best 1 inch spacers should be made of forged “T6” aluminum alloys, hub-centric designs, and come with additional functions and a long warranty.

The Safest Material:
Wheel spacers are mainly composed of steel or aluminum alloy. Specifically, the 6061-T6/ 7075-T6 aluminum weighs significantly less than steel and provides ample strength for its intended use. Besides, forged 1 inch spacers are the pinnacle in aftermarket wheel spacers. Giving an example, BONOSS forged active cooling spacers are made of forged 6061-T6/ 7075-T6 aluminum alloys.

They undergo continuous tons of pressure to form. This eliminates any porosity, shrinkage, and other micro-processes presented in the raw material. The resulting wheel spacers have a high degree of uniformity in the grain structure. They perform well as tensile strength is up to 572 MPa and the yield strength is up to 503 MPa. That is why BONOSS forged active cooling 1 inch spacers are far stronger as well as lighter than those unbranded casting alternatives.

What Size 1 Inch Spacers Are Best BONOSS Forged Active Cooling Adapters Hubcentric Spacers Before and After Example CHZ (2)

Hub-centric 1 inch Spacers:
For the best performance and safety, it is recommended to use hub-centric 2 inch wheel spacers. BONOSS forged hub-centric wheel spacers are multi-stage design. The hub-centric metal ring is machined to be multi-layers, and the bevels fit the corresponding hub flange, which eliminates any possible gaps. Using genuine BONOSS forged active cooling hub-centric wheel spacers, there will be less chance of vibrations at high speed.

Additional Benefits:
The best 1 inch spacers can work more than just spacers. For example, BONOSS forged active cooling aluminum wheel spacers provide an active cooling benefit. There are petal-shaped heat dissipation grooves that allow the external cold air to flow continuously through the spacers. The air takes away the heat to actively dissipate heat for the brakes. What’s better, all BONOSS forged active cooling 1 inch wheel spacers offer a 10-year warranty. This makes BONOSS forged wheel spacers your best option.

Kevin Brain
Mechanical Engineer

Hi, I’m Kevin Brian, a 30-year mechanical engineer who loves working with automotive modifications. I am delighted to share real information about wheel spacers and wheel nuts. For example, I wrote this article based on my experience. It is original content, all typed and uploaded by myself. NOT generated by AI tools. Hope I can help you understand and use automotive wheel spacers and wheel nuts better.