8x6.5 To 8x275 Wheel Adapters Hub Centric Aluminum For Gm Ford Ram Trucks
Fully Hub Centric
Made to Order: This product takes about 7-10 business days to ship.
Sold As: 1 Pc Or Complete Set of 4 - Wheel Adapter with Mounting Lug Nuts
Custom Sizes: Looking for a custom size or thickness? Give us a call at (310) 763-1437.
These wheel adapters are designed to convert your truck's 8x6.5" bolt pattern to the medium-duty 8x275 mm bolt pattern. Common 8x275 wheels include 19.5" and 22.5" options from Kodiak, Top Kick, GM Silverado 4500/5500, International 4300, Freightliner M2, and certain Ford F-650 trucks, as well as aftermarket wheels with the same bolt pattern.
Important Note These adapters have M22x1.5 studs. If your wheels need M20x1.5 due to smaller holes, you may need to enlarge them. Most wheels fit M22x1.5, but we can accommodate M20x1.5 with limited stud length.
Features
- These wheel adapters convert your vehicle to an 8x275 mm bolt pattern, compatible with dually trucks or super singles.
- The rear adapters feature an extended lip to accommodate dual wheels, whether steel or aluminum.
- Compatible with both Alcoa and aftermarket wheels
- Hub and Wheel Centric, ensuring no vibration at high speeds
- Engineered for extreme-duty vehicles, safe for heavy-duty towing
- Proven to support towing capacities of up to 36,000 lbs with our spacers
- Includes all necessary mounting hardware
- Custom Made in Lynwood, California, USA
Specifications
- Bolt Pattern: 8x6.5"
- Hub Bore: 116.7 MM | 121.3 MM | 125 MM
- Wheel Bolt Pattern: 8x275 MM
- Wheel Bore: 221 MM
- Thread Pitch: M22x1.5 (If you need M20x1.5, we can accommodate)
- Thickness: 1.5" Most Popular, Other Sizes Available
- Front Wheel Lip: 0.50"
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Rear Wheel Lip: 1.5"
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Front Stud Length: 3"
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Rear Stud Length: 4"
- Material: Billet Aluminum 6061 T-6
- Hardware: 10.9 Grade
- Finish: Raw Aluminum
- Torque Specs: Factory specifications recommended
Vehicle Compatibility
Wheels being installed must have a 8x275 MM bolt pattern.
Compatible Models
| Year | Make | Model | Hub Bore | Thread Pitch |
|---|---|---|---|---|
| 1988-2010 | Chevrolet | Silverado 2500 | 116.7 MM | M14x1.5 |
| 1988-2010 | Chevrolet | Silverado 3500 Dually | 116.7 MM | M14x1.5 |
| 1988-2010 | GMC | Sierra 2500 | 116.7 MM | M14x1.5 |
| 1988-2010 | GMC | Sierra 3500 Dually | 116.7 MM | M14x1.5 |
| 1994-2011 | Dodge | Ram 2500 | 121.3 MM | 9/16-18 |
| 1994-2011 | Dodge | Ram 3500 Dually | 121.3 MM | 9/16-18 |
| 2012-2025 | Ram | Ram 2500 | 121.3 MM | M14x1.5 |
| 2012-2018 | Ram | Ram 3500 Dually | 121.3 MM | M14x1.5 |
| 1988-1998 | Ford | F-250 | 125 MM | 9/16-18 |
| 1988-1998 | Ford | F-350 Dually | 125 MM | 9/16-18 |
Frequently Asked Questions
What Is the Difference Between Aluminum and Steel?
Steel is prone to corrosion, while aluminum resists it. The key difference between the two is weight, which significantly impacts rotating mass. Here's a detailed comparison:
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Tensile Strength:
- Billet 6061 T-6 Aluminum:45,000 PSI
- Steel: 53,700 PSI
- Thickness: Our aluminum adapters are twice as thick as steel, offering nearly double the combined PSI.
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Weight:
- 1.5" Aluminum Adapter: 25 lbs
- 1.5" Steel Adapter: 48 lbs
Why Are 1.5" Aluminum Adapters the Most Popular Size?
The 1.5" thickness is widely preferred because it provides clearance for tires up to 13.5" wide in the front and improves the truck's stance.
What Is the Maximum Towing Capacity?
Our adapters have been tested to tow up to 36,000 lbs. This was successfully demonstrated using a 2022 Ford F-550 without any issues.
Will These Adapters Work on Single Rear Wheel Trucks?
Front Wheels
To properly install dually wheels, you’ll need a 3" factory hub extension. If a factory hub extension isn’t available, we can create a 3" wheel adapter to serve the same purpose.
Rear Wheels
A 1.5" thick adapter provides ample clearance to mount dually wheels without interfering with the leaf springs.