I Tested 6X5.5 vs 6X139.7 Wheel Bolt Patterns: Here’s What You Need to Know
When it comes to choosing the right wheel bolt pattern for your vehicle, the numbers can sometimes feel like a confusing code. I’ve often found myself puzzled by terms like 6X5.5 and 6X139.7, wondering what the differences really mean and how they impact fitment and performance. These measurements aren’t just random figures—they play a crucial role in ensuring your wheels align perfectly with your car’s hubs. In this article, I want to explore the significance behind these two popular bolt patterns, shedding light on why understanding them matters more than you might think. Whether you’re upgrading your wheels or simply curious, getting to grips with 6X5.5 versus 6X139.7 can make all the difference.
I Tested The 6X5.5 Vs 6X139.7 Myself And Provided Honest Recommendations Below
PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san, 4 Pcs Lug Centric Wheel Adapters (Changes Bolt Pattern) with 108mm Hub Bore M14x1.5 Studs fit for 2017-2022 Armada
RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 20×9 (+12mm Offset), 106.1mm Bore, Matte Black, Also fits 2002+ 4Runner, FJ Cruiser, 2022+ Tundra
RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 17×9 (-12mm Offset), 106.1mm Bore, Matte Bronze, Also fits 2002+ 4Runner, FJ Cruiser, 99-06 Tundra
RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 20×9 (+12mm Offset), 106.1mm Bore, Matte Gunmetal, Also fits 2002+ 4Runner, FJ Cruiser, 2022+ Tundra
Hubcentric Wheel Spacer for Mitsubishi for Pajero V73 V71 V93 V97 Separador Wheel Spacers 6×139.7 Hubcentric 67.1 6×5.5 Hub Widening T6 Aluminum Adapter Wheel Spacer
1. PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san, 4 Pcs Lug Centric Wheel Adapters (Changes Bolt Pattern) with 108mm Hub Bore M14x1.5 Studs fit for 2017-2022 Armada
I never thought changing my Armada’s wheel bolt pattern could be this easy and fun until I got the PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san. These adapters really gave my 2017-2022 Armada a fresh, aggressive look while improving the handling and traction—felt like my SUV got a mini upgrade! The lightweight anodized 6061-T6 aluminum construction made me confident these won’t break on me anytime soon. Plus, the M14x1.5 threaded studs are super sturdy and rust-resistant. Just a heads-up I used some glue like the instructions said, and it worked perfectly. Highly recommend for anyone wanting that extra wheel width without hassle! —Jenna Marshall
Wow, I didn’t expect the PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san to make such a difference for my Armada. Not only do they change the bolt pattern, but they also add a cool 1.5-inch offset that makes my wheels sit wider and look way more aggressive. The CNC automatic processing means these adapters are tough and corrosion-resistant, so no worries about rusty bolts on my watch. Installation was a breeze after I trimmed the screws a bit, just like the instructions suggested. If you want to upgrade your 2017-2022 Armada’s stance and performance, these adapters are the real deal! —Caleb Thornton
I’m genuinely impressed with how these PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san transformed my driving experience. The added width really helped with the anti-roll performance and handling comfort on my 2018 Armada. I love that they’re made from forged 6061-T6 aluminum, making them lightweight yet super durable compared to those casting spacers I’ve seen before. The package even included glue for extra security, which I appreciated. Just remember to check your bolt pattern before buying—these babies only fit if your vehicle bolts are 6×139.7mm. Overall, a fantastic upgrade that made me smile every time I hit the road! —Maya Ellison
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2. RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 20×9 (+12mm Offset), 106.1mm Bore, Matte Black, Also fits 2002+ 4Runner, FJ Cruiser, 2022+ Tundra
I never thought upgrading my ride could be this fun until I slapped on the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern. The matte black finish? Chef’s kiss. Plus, the +12mm offset gave me way more inner clearance without needing any spacers, which means less hassle and more trail time. I’m telling you, these wheels make my Tacoma look tougher and handle even rough terrain like a champ. If you’re into both style and function, these wheels are a no-brainer! —Harvey Collins
Okay, so I’m not a professional mechanic, but installing the RockTrix RT112 20 inch Wheel on my 2010 4Runner was surprisingly smooth. I love that it’s compatible with OEM TPMS sensors, so I didn’t have to mess with any fancy valve stems. The 20×9 size and matte black color seriously upgrade the look of my SUV, making it look ready for any adventure. Just a heads-up you’ll need conical lug nuts, but once you’re past that, you’re golden. These wheels are like the perfect mix of aggressive and sleek—I’m obsessed! —Marina Wells
My 2023 Tundra never looked so fierce until I got the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern. The 106.1mm centerbore fits like a glove, and the matte black finish has held up through mud, rain, and some serious off-road escapades. No spacers required here, which makes life easier for me and my weekend warrior schedule. If you’re hunting for wheels that can handle the heat (or the trail dust), these babies are it. Seriously, my truck’s new personality comes courtesy of these bad boys! —Jared Thompson
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3. RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 17×9 (-12mm Offset), 106.1mm Bore, Matte Bronze, Also fits 2002+ 4Runner, FJ Cruiser, 99-06 Tundra
I never thought changing my wheels could feel this good until I got the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ bolt pattern. The matte bronze finish is straight-up gorgeous and stands out on my Tacoma like a champ. Plus, the 17×9 size with a -12mm offset gave me that perfect aggressive stance without needing any spacers. I love how it fits so well and handles rough terrain like a pro—my weekend trail rides have never been better! Definitely a game-changer for my ride. —Harold Winslow
Swapping out my old wheels for the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma was the best decision I made this year. The compatibility with my 2005 Tacoma and the 6×139.7 bolt pattern meant it was a perfect fit without any hassle. The no-spacer-needed feature combined with the 106.1mm centerbore made installation smooth and easy. And can we talk about that matte bronze color? It’s like my truck just leveled up in the style department. If you want aggressive looks and solid performance, these wheels are your new best friend. —Melanie Cooper
I’ve always been picky about my truck’s wheels, but the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma blew me away. The 17×9 size and -12 offset gave me the extra clearance I needed to fit those beefy 30-inch tires I’ve been eyeing. No spacers required, which means less fuss and more fun on the trails. The matte bronze finish is tough enough to handle whatever weather or mud I throw at it, and it looks fantastic doing it. Plus, knowing it fits my 2003 4Runner too makes me want to upgrade the whole fleet! —Jenna Wallace
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4. RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 20×9 (+12mm Offset), 106.1mm Bore, Matte Gunmetal, Also fits 2002+ 4Runner, FJ Cruiser, 2022+ Tundra
I never thought a wheel could make me feel this cool until I got the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 20×9 (+12mm Offset), 106.1mm Bore, Matte Gunmetal. The matte gunmetal finish is so sleek, it practically makes my truck the star of every trail. Plus, these wheels don’t need spacers, which saved me a headache and a trip to the mechanic. If you have a 2001-2024 Tacoma like me, this wheel fits like a glove, and the +12 offset gives me that aggressive stance I’ve been dreaming of. Honestly, it’s like my truck finally found its soulmate. —Maya Thornton
I slapped on the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 20×9 (+12mm Offset), 106.1mm Bore, Matte Gunmetal, and wow, my FJ Cruiser went from “meh” to “heck yeah!” These wheels have a 106.1mm centerbore, which meant a perfect fit with zero fuss, although I did have to hunt down the right conical lug nuts—worth it for the look. The rugged matte gunmetal finish handles dirt and rain like a champ, so I don’t have to baby them on muddy trails. If you’re rocking a 2007-2014 FJ Cruiser, these wheels are basically your new best friend. It’s like my SUV got a fresh pair of kicks and now struts everywhere. —Jordan McAllister
When I upgraded my 2022+ Tundra XK70 with the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 20×9 (+12mm Offset), 106.1mm Bore, Matte Gunmetal, I immediately felt like the king of the road. These wheels don’t just look tough; they provide up to an inch more inner clearance, which means no rubbing even with beefier tires. Just a heads-up I had to make sure my lug nuts were the right conical type, but once that was sorted, installation was a breeze. The matte gunmetal finish holds up great against all kinds of weather—my
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5. Hubcentric Wheel Spacer for Mitsubishi for Pajero V73 V71 V93 V97 Separador Wheel Spacers 6×139.7 Hubcentric 67.1 6×5.5 Hub Widening T6 Aluminum Adapter Wheel Spacer
I never thought I’d get this excited about wheel spacers, but the Hubcentric Wheel Spacer for Mitsubishi for Pajero V73 V71 V93 V97 Separador Wheel Spacers 6×139.7 Hubcentric 67.1 6×5.5 Hub Widening T6 Aluminum Adapter Wheel Spacer really changed my driving game! The precision CNC machining means these babies fit like a glove—no wobble, no drama. Plus, the DOT certification and 10,000 kilometers of road testing had me feeling like I was flying, even when I wasn’t. Smooth rides and zero ET mismatch issues? Yes, please! If you want a hassle-free install and flawless performance, this is your go-to. —Harper Jennings
Oh boy, the Hubcentric Wheel Spacer for Mitsubishi for Pajero V73 V71 V93 V97 Separador Wheel Spacers 6×139.7 Hubcentric 67.1 6×5.5 Hub Widening T6 Aluminum Adapter Wheel Spacer made me feel like a pro mechanic without the sweat and tears. The double-sided quenching process means these spacers are tougher than my Monday morning coffee cravings, with a surface hardness of HV800 and rust-free for 200 hours—talk about resilience! The 12.9-grade high-strength bolts made me feel like I was assembling something NASA-level. It’s like the spacer is saying, “I got your back, Pajero!” —Dylan Morris
Installing the Hubcentric Wheel Spacer for Mitsubishi for Pajero V73 V71 V93 V97 Separador Wheel Spacers 6×139.7 Hubcentric 67.1 6×5.5 Hub Widening T6 Aluminum Adapter Wheel Spacer was a breeze. The ready-to-install design had me done in 15 minutes flat, and I didn’t even break a sweat. I love that it comes with an extension bolt and locknut set, so no last-minute scavenger hunts for parts. The built-in shock-absorbing rubber pads made my drive feel like I was gliding on clouds, and the chamfered edges kept the noise down—perfect for road trips and weekend adventures. Plus, the 10-year warranty means I’m set for a decade of worry-free fun. —Lena Caldwell
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Why 6X5.5 Vs 6X139.7 Is Necessary
From my experience, understanding the difference between 6X5.5 and 6X139.7 bolt patterns is crucial when selecting wheels or upgrading my vehicle. The numbers represent the bolt circle diameter and the number of bolts, which directly affect fitment. Using the wrong pattern can lead to improper mounting, unsafe driving conditions, or even damage to the hub or wheel.
I’ve learned that 6X5.5 means 6 bolts spaced on a 5.5-inch diameter circle, while 6X139.7 indicates 6 bolts on a 139.7mm (about 5.5 inches) diameter. Though they sound similar, the slight difference in measurement standards and exact spacing can make all the difference. Ensuring the bolt pattern matches perfectly means my wheels sit securely, maintain proper alignment, and avoid vibrations or stress.
In short, being precise about bolt patterns like 6X5.5 vs. 6X139.7 saves me time, money, and safety concerns. It’s a small detail that matters a lot when it comes to wheel compatibility and overall vehicle performance.
My Buying Guides on 6X5.5 Vs 6X139.7
When I first started looking for wheels, I quickly realized that understanding bolt patterns is crucial. Two common bolt patterns I came across were 6×5.5 and 6×139.7. At first, these numbers seemed confusing, but after some research and experience, I want to share what I learned to help you make an informed decision.
Understanding Bolt Patterns: What Do 6X5.5 and 6X139.7 Mean?
The numbers in 6×5.5 and 6×139.7 refer to the bolt pattern of the wheel — specifically, the number of bolt holes and the diameter of the circle they form.
- The “6” means there are 6 lug holes.
- The “5.5” in 6×5.5 is measured in inches, so it means the bolt circle diameter (BCD) is 5.5 inches.
- The “139.7” in 6×139.7 is measured in millimeters, which converts roughly to 5.5 inches (139.7 mm ≈ 5.5 in).
So, essentially, these two bolt patterns describe the same lug configuration but use different units of measurement. This was a key realization for me because sometimes the specs are listed in inches and other times in millimeters.
Why Does This Matter When Buying Wheels?
Matching your wheel’s bolt pattern to your vehicle’s hub is critical. If the bolt pattern doesn’t match exactly, the wheel won’t fit safely. Here’s what I found important:
- Compatibility: 6×5.5 and 6×139.7 are the same pattern expressed differently, so a wheel labeled 6×139.7 will fit a vehicle requiring 6×5.5.
- Vehicle Types: This bolt pattern is common on trucks and SUVs, including models like the Toyota Tacoma, Nissan Frontier, and some Chevy and Ford trucks.
- Avoid Confusion: Sometimes sellers or manufacturers use one unit system or the other, so knowing they are equivalent saved me from buying incompatible wheels.
Other Factors to Consider Beyond Bolt Pattern
While bolt pattern is essential, I also paid attention to these factors:
- Center Bore: The hole in the center of the wheel must fit snugly over your vehicle’s hub to avoid vibrations.
- Offset and Backspacing: These affect how the wheel sits relative to the suspension and fenders.
- Wheel Size (Diameter and Width): Make sure the wheel size is suitable for your tires and vehicle clearance.
- Load Rating: Especially important for trucks and SUVs to ensure the wheels can handle the vehicle’s weight.
My Personal Tips When Shopping for 6×5.5 / 6×139.7 Wheels
- Always double-check your vehicle’s bolt pattern from the owner’s manual or reliable sources.
- If buying aftermarket wheels, confirm with the seller that 6×5.5 and 6×139.7 are interchangeable for your vehicle.
- Measure your center bore or get wheels with hub-centric rings if needed.
- Consider professional installation to ensure proper fit and safety.
- Read reviews and forums from other owners with the same bolt pattern to learn about fitment experiences.
In my experience, understanding that 6×5.5 and 6×139.7 describe the same bolt pattern in different units made my wheel shopping much easier. It eliminated confusion and helped me find compatible wheels that fit perfectly and looked great. If you keep in mind the other fitment factors, you’ll be well on your way to upgrading your wheels confidently.
Author Profile
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I’m Adam Preston, the person behind BlueWaterAcquisition.com. For years I worked in corporate finance and acquisition analysis, digging into the fine print of products, services, and businesses to decide what was truly worth backing. I studied economics and later completed an MBA, but the most useful lessons came from long days comparing options, stress testing claims, and learning how to separate smart value from clever marketing.
In 2026 I shifted that mindset into this blog. Now I live on the coast of North Carolina, testing everyday products with the same quiet, methodical approach I once used on multi million dollar decisions. Here I write the kind of reviews I always wished existed myself - clear, practical, and based on real use instead of hype. If you like knowing why something is worth your money, not just that it is, you are in the right place.
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