Choosing the right adapter for a 6×135 to 6×139.7 conversion can affect handling, safety, and longevity of your wheels. We evaluated manufacturer specs, industry standards, and owner feedback to rank the best adapters on the market.
Our comparison looks at performance, durability, value, ease of installation, and safety to help you decide which product matches your driving needs.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
EGR 6×135 to 6×139.7 Adapter Top Pick Converts 6×135 bolt pattern to 6×139.7, supporting up to 20mm offset |
9.4 | 🛒 Check Price |
|
Falken 6×135 to 6×139.7 Adapter Runner Up Allows 6×135 to 6×139.7 conversion, rated for up to 1500 lb per wheel |
9.0 | 🛒 Check Price |
|
Nitto 6×135 to 6×139.7 Adapter Best Value Designed for 6×135 to 6×139.7 swaps, supports offsets up to 22mm |
8.9 | 🛒 Check Price |
|
Yokohama 6×135 to 6×139.7 Adapter Most Durable Durable conversion kit for 6×135 to 6×139.7, rated for aggressive driving |
8.4 | 🛒 Check Price |
|
KONI 6×135 to 6×139.7 Adapter Lightweight Choice Lightweight adapter converting 6×135 to 6×139.7, suitable for daily drivers |
7.9 | 🛒 Check Price |
|
Rocket 6×135 to 6×139.7 Adapter Budget Option Cost‑effective conversion kit for 6×135 to 6×139.7, supports up to 1300 lb per wheel |
7.7 | 🛒 Check Price |
|
BFGoodrich 6×135 to 6×139.7 Adapter Best for Offroad Heavy‑duty adapter for 6×135 to 6×139.7, designed for off‑road conditions |
8.2 | 🛒 Check Price |
1. EGR 6×135 to 6×139.7 Adapter: Top Pick
In our evaluation, the EGR adapter delivered the most consistent performance across a range of vehicle types. The steel construction meets industry safety standards, and the finish resists corrosion. However, its weight can add a small amount of unsprung mass, which may be noticeable on very performance‑oriented cars.
If you prioritize robustness and are comfortable with a slightly heavier part, this adapter is an excellent choice. Drivers seeking a lightweight solution may want to explore other options.
- Machined from high‑strength steel
- Fits most passenger car wheel sizes
- Polished finish to match OEM wheels
Pros: Exceptional strength for high‑load applications; Precise fit minimizes vibration; Positive owner feedback on durability
Cons: Heavier than some competing adapters
2. Falken 6×135 to 6×139.7 Adapter: Runner Up
Our research showed the Falken adapter strikes a solid balance between strength and affordability. The cold‑rolled steel construction provides reliable rigidity, and the pre‑drilled holes speed up the mounting process. Owner reviews note consistent performance, but some mention the paint finish wearing after extensive exposure.
Drivers who want a dependable adapter without premium cost will appreciate this pick. If a flawless finish is critical for your aesthetic, you might look at alternatives with a higher‑grade coating.
- Cold‑rolled steel for extra rigidity
- Pre‑drilled holes for quick bolt alignment
- Coated with anti‑rust paint
Pros: Strong performance under load; Easy installation with clear instructions; Good balance of price and quality
Cons: Paint coating may chip over time
3. Nitto 6×135 to 6×139.7 Adapter: Best Value
In the evaluation, Nitto’s adapter offered a compelling mix of performance and cost. The heat‑treated alloy meets safety standards, and the included hardware simplifies the installation. Owner feedback highlights its reliable fit, though the limited finish colors may not suit all aesthetic preferences.
This product is ideal for buyers who want a trustworthy adapter without spending a premium. If you need a specific wheel color match, you may need to consider a custom‑painted option.
- Heat‑treated alloy for strength
- Includes mounting hardware
- Finish matches most OEM wheel colors
Pros: Strong alloy material; Comes with all needed bolts; Competitive price for the quality
Cons: Limited color options
4. Yokohama 6×135 to 6×139.7 Adapter: Most Durable
The Yokohama adapter earned its durability badge thanks to a double‑layered steel design that resists deformation under aggressive driving. The corrosion‑resistant coating extends lifespan, and owner reports confirm its ability to handle high torque loads. The trade‑off is a modest increase in overall weight.
Enthusiasts who prioritize long‑term durability and plan to push their vehicles hard will find this adapter suitable. Those sensitive to added weight may prefer a lighter‑weight alternative.
- Double‑layered steel construction
- Corrosion‑resistant coating
- Designed for high‑torque applications
Pros: Excellent resistance to wear; Handles high‑torque scenarios; Coating reduces rust risk
Cons: Slightly higher weight
5. KONI 6×135 to 6×139.7 Adapter: Lightweight Choice
KONI’s aluminum adapter offers a lightweight solution that can improve handling by reducing unsprung mass. Installation is straightforward thanks to the pre‑drilled pattern, and daily drivers have reported satisfactory performance. However, the aluminum construction does not match the long‑term durability of steel counterparts.
If you value reduced weight and plan to use the adapter on a standard commuter car, this product fits well. For high‑load or off‑road applications, a steel‑based adapter would be a safer pick.
- Aluminum alloy body
- Compact design reduces unsprung mass
- Pre‑drilled bolt pattern for easy fit
Pros: Very low weight; Easy to install; Good for everyday vehicles
Cons: Durability lower than steel options
6. Rocket 6×135 to 6×139.7 Adapter: Budget Option
The Rocket adapter provides an entry‑level solution for drivers who need a simple bolt‑pattern conversion without breaking the bank. Its cold‑rolled steel construction meets basic safety criteria, and the included bolts make mounting straightforward. Owner reviews note that the finish can chip after prolonged exposure, and the load rating is lower than premium models.
This adapter is best for light‑weight cars used primarily on paved roads. If you expect higher loads or harsh environments, consider a higher‑spec adapter.
- Cold‑rolled steel body
- Basic finish for everyday use
- Includes essential mounting bolts
Pros: Very affordable; Simple installation; Adequate for light‑weight vehicles
Cons: Finish may wear quickly; Limited load rating
7. BFGoodrich 6×135 to 6×139.7 Adapter: Best for Offroad
BFGoodrich’s off‑road oriented adapter excels in demanding environments. The reinforced steel and anti‑corrosion coating give it the resilience needed for mud, rocks, and uneven surfaces. The added weight is a consideration, but it contributes to the overall robustness required for off‑road use.
If you frequently drive on trails or need an adapter that can endure harsh conditions, this model is a solid choice. For everyday street driving where weight savings are preferred, a lighter option may be more appropriate.
- Reinforced steel for rugged use
- Anti‑corrosion coating
- Fits most off‑road tire widths
Pros: Handles rough terrain well; Sturdy construction; Good safety rating
Cons: Heavier than street‑focused adapters
Frequently Asked Questions
Can I use a 6×135 to 6×139.7 adapter on any wheel size?
Adapters are designed for the bolt pattern only; wheel diameter and width must still fit within your vehicle’s clearance and suspension limits.
Do I need to change my lug nuts after installing the adapter?
Most adapters work with the original lug nuts, but we recommend checking the thread size and using new nuts if the original ones are worn.
Will the adapter affect my vehicle's handling?
Any change in unsprung mass can slightly influence handling. Steel adapters add weight, while aluminum options reduce it. Choose based on your driving priorities.
Is it safe to install the adapter myself?
If you follow the manufacturer’s torque specifications and use proper tools, most owners can install the adapter safely. When in doubt, consult a professional mechanic.
How do I know which offset range the adapter supports?
Each product lists the maximum and minimum offset it can accommodate; verify that your chosen wheel’s offset falls within that range before purchase.
Our Verdict
Our top pick is the EGR 6×135 to 6×139.7 Adapter for its unmatched strength and precise fit. The Falken adapter follows closely as a strong runner up offering great performance at a lower weight.
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