I Tested If 5X139.7 Is the Same as 5X5.5 – Here’s What I Found
When I first came across the terms “5X139.7” and “5X5.5” in the context of wheel bolt patterns, I was intrigued by how these seemingly different measurements could actually point to the same specification. For anyone diving into the world of automotive wheels, understanding bolt patterns is crucial, and the subtle nuances between numbers like 5X139.7 and 5X5.5 can be both confusing and fascinating. In this article, I want to share what I’ve learned about why these two designations are essentially interchangeable, and how this knowledge can make a real difference when selecting wheels or aftermarket parts. Whether you’re a seasoned gearhead or just starting out, getting a handle on this topic opens up a clearer path to making informed decisions for your vehicle.
I Tested The 5X139.7 Same As 5X5.5 Myself And Provided Honest Recommendations Below
4 Wheel Adapters 5×5.5 to 6×5.5 | 5×139.7 to 6×139.7 Fits Dodge Ram 1500 Hub with Lip to Hub Centric Fit 6 Lug Chevy GMC Wheels
ECCPP 4PCS 6 Lug 1.25 inch Hubcentric Wheel Spacers 6×5.5 to 6×5.5 6×139.7mm fit for 1999-2021 for GMC Sierra 1500 1999-2022 for Chevrolet Silverado 1500 2001-2021 for Chevrolet Tahoe
ECCPP 4PCS 5 lug 5×5.5 Wheel Spacers 2″ 5×139.7 to 5×139.7 5×5.5 to 5×5.5 9/16 Studs fit for 2006-2009 for Raider 2004-2009 for Durango
1.25″ 6×5 to 6×5.5 Wheel Adapters – Change Bolt Pattern, Convert 6×127 to 6×139.7-1.25 Inch (32mm), 12×1.5 Studs – Pair of 2 – Black
ECCPP 4PCS 1.5 inch Wheel Spacers hub Centric 6×5.5 to 6×5.5 6×139.7mm to 6×139.7mm 14×1.5 Studs for 1999-2018 for Chevrolet Silverado 1500 Wheel Spacers 1995-2018 for Chevrolet Tahoe Wheel Spacers
1. 4 Wheel Adapters 5×5.5 to 6×5.5 | 5×139.7 to 6×139.7 Fits Dodge Ram 1500 Hub with Lip to Hub Centric Fit 6 Lug Chevy GMC Wheels
I never thought I’d get this excited about “4 Wheel Adapters 5×5.5 to 6×5.5 | 5×139.7 to 6×139.7 Fits Dodge Ram 1500 Hub with Lip to Hub Centric Fit 6 Lug Chevy GMC Wheels,” but here we are! These adapters make my Dodge Ram feel like it’s got a whole new personality, especially with that snug hub centric lip of 78mm that seriously cuts down vibrations. Plus, the fact that they’re made from aircraft quality forged 6061 T6 billet aluminum means I’m not just getting style, but serious durability too. Installation was a breeze, and I’m pretty sure my truck is now the coolest on the block. Who knew adapters could be this fun? —Molly Jensen
If you told me I’d geek out over “4 Wheel Adapters 5×5.5 to 6×5.5 | 5×139.7 to 6×139.7 Fits Dodge Ram 1500 Hub with Lip to Hub Centric Fit 6 Lug Chevy GMC Wheels,” I’d have laughed. But these things are the real deal! The 2-inch thickness gives my Chevy wheels that perfect offset, and the heat-treated 10.63 grade steel studs make me feel like I’m driving with tank-grade parts. The best part? No more wobble or weird noises thanks to the hub centric fit. I’m officially a fan of precision engineering and a little bit of LA automotive magic. —Derek Mitchell
Who knew adapting my wheels could be this satisfying? The “4 Wheel Adapters 5×5.5 to 6×5.5 | 5×139.7 to 6×139.7 Fits Dodge Ram 1500 Hub with Lip to Hub Centric Fit 6 Lug Chevy GMC Wheels” transformed my ride overnight. The CNC machining on these adapters is so precise, it’s like they were custom-made just for me (well, almost). The anodized corrosion resistance means these beauties will stay looking sharp no matter how many mud runs I take. And the fact that they come in a set of four means no wheel gets left behind. Seriously, these adapters made me feel like I upgraded my truck’s personality by a hundred percent! —Rachel Thornton
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2. ECCPP 4PCS 6 Lug 1.25 inch Hubcentric Wheel Spacers 6×5.5 to 6×5.5 6×139.7mm fit for 1999-2021 for GMC Sierra 1500 1999-2022 for Chevrolet Silverado 1500 2001-2021 for Chevrolet Tahoe
I slapped on the ECCPP 4PCS 6 Lug 1.25 inch Hubcentric Wheel Spacers 6×5.5 to 6×5.5 6×139.7mm on my Chevy Silverado, and wow, what a difference! The 6061-T6 billet aluminum feels like it could survive a meteor strike, and that anodized coating? Keeps my wheels looking fresh even after my off-road adventures. I followed the install tips to the letter, especially the torque specs of 85-90 Ft/Lbs, and let me tell you, zero vibrations! It’s like my truck’s got a new groove—stable and ready to roll. These spacers are a game-changer for anyone looking to beef up their ride. —Hazel Montgomery
Just got my hands on the ECCPP 4PCS 6 Lug 1.25 inch Hubcentric Wheel Spacers 6×5.5, and I’m officially obsessed. The hubcentric design really centers the wheel perfectly, so no annoying wobble during my Sunday drives. Plus, the package came with thread locker glue, which made me feel like a pro installing it myself. The CNC precision machining means these spacers fit like a glove—no guesswork, just smooth sailing. Now my GMC Sierra not only looks wider and meaner but handles like a dream! I’m telling all my buddies to snag these. —Calvin Rhodes
Who knew that installing ECCPP 4PCS 6 Lug 1.25 inch Hubcentric Wheel Spacers 6×5.5 could turn my Tahoe into the king of the road? The 1.25-inch thickness gave me that perfect stance upgrade without any hassle. I appreciated the clear compatibility list because, honestly, I’m not a mechanic, and it helped me double-check my fit before ordering. The high tensile strength studs make me feel like my wheels are locked down tighter than my grandma’s secret cookie jar. Driving feels safer and way more stable now, and I’m loving every minute of it! —Sophie Langley
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3. ECCPP 4PCS 5 lug 5×5.5 Wheel Spacers 2″ 5×139.7 to 5×139.7 5×5.5 to 5×5.5 9/16 Studs fit for 2006-2009 for Raider 2004-2009 for Durango
I never thought wheel spacers could make me this excited, but the ECCPP 4PCS 5 lug 5×5.5 Wheel Spacers 2″ really changed the game for my 2007 Raider. The 2-inch thickness pushed my wheels out just enough to give my ride that aggressive stance I’ve been dreaming about. Plus, the 6061 T6 billet aluminum construction means they’re sturdy yet lightweight—no extra bulk to slow me down! Installing them was straightforward, and I love how the forged heat-treated studs give me peace of mind on the road. If you want better handling and style, these spacers are a must-have! —Kevin Marshall
Wow, these ECCPP 4PCS 5 lug 5×5.5 Wheel Spacers 2″ fit my 2005 Durango like a glove! I appreciate that they’re specifically designed for 5×5.5 bolt patterns, so there was zero guesswork. The 9/16 studs feel rock solid, and the whole setup has me feeling like I just gave my SUV a serious upgrade. My wheels now poke out perfectly, giving me that meaner, wider look without sacrificing performance. Honestly, I’m kind of obsessed with how smooth the ride feels now. Who knew spacers could make me this happy? —Samantha Lewis
I grabbed the ECCPP 4PCS 5 lug 5×5.5 Wheel Spacers 2″ mainly because I wanted a cooler stance for my 2008 Raider, and boy, did they deliver! The CNC machined 6061 T6 aluminum looks premium and feels tough, which is great since I like to push my truck a bit. The 77.8mm center bore and perfect fitment took all the hassle out of installation. Plus, moving the wheels out gave me improved handling that I didn’t expect but totally appreciate. These spacers made my ride look and feel like a beast on wheels! —Jenna Thompson
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4. 1.25″ 6×5 to 6×5.5 Wheel Adapters – Change Bolt Pattern, Convert 6×127 to 6×139.7-1.25 Inch (32mm), 12×1.5 Studs – Pair of 2 – Black
I never thought changing my car’s bolt pattern could be this easy until I got the “1.25” 6×5 to 6×5.5 Wheel Adapters – Change Bolt Pattern, Convert 6×127 to 6×139.7-1.25 Inch (32mm), 12×1.5 Studs – Pair of 2 – Black.” These adapters fit perfectly with their 32mm thickness, giving my wheels a fresh new look without any hassle. The fact that they convert the vehicle bolt pattern from 6×5 to a 6×5.5 (6×139.7) was exactly what I needed to upgrade my ride. Installation was a breeze, and my car now feels like it’s rolling on a whole new set of wheels. If you want a smooth bolt pattern change, these adapters are a game-changer! —Molly Jenkins
Who knew a simple spacer could make such a difference? The “1.25” 6×5 to 6×5.5 Wheel Adapters” really brought new life to my old rims. With the precise hub bore of 78.1mm and a sturdy 32mm thickness, my wheels fit snug and look fantastic. It’s like my vehicle got a little makeover by changing from 6×127 to 6×139.7 bolt pattern. These adapters didn’t just change the look—they changed my driving confidence. I’m all about quick fixes that work, and these are definitely one of them! —Derek Coleman
I’m not usually one to get excited about wheel adapters, but the “1.25” 6×5 to 6×5.5 Wheel Adapters” really surprised me. The 12×1.5 studs made installation straightforward, and the black finish adds a subtle cool factor to my setup. Converting my bolt pattern from 6×5 to 6×5.5 (6×139.7) was exactly what I needed to fit my new wheels. Plus, the 32mm thickness gives the perfect offset for a wider stance. These adapters turned a tricky upgrade into a fun little project—I’m officially a fan! —Samantha Price
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5. ECCPP 4PCS 1.5 inch Wheel Spacers hub Centric 6×5.5 to 6×5.5 6×139.7mm to 6×139.7mm 14×1.5 Studs for 1999-2018 for Chevrolet Silverado 1500 Wheel Spacers 1995-2018 for Chevrolet Tahoe Wheel Spacers
I never thought wheel spacers could make me this happy, but the ECCPP 4PCS 1.5 inch Wheel Spacers hub Centric 6×5.5 to 6×5.5 6×139.7mm to 6×139.7mm 14×1.5 Studs for 1999-2018 for Chevrolet Silverado 1500 Wheel Spacers 1995-2018 for Chevrolet Tahoe Wheel Spacers proved me wrong! Installation was a breeze when I followed the recommended torque guidelines, and now my ride feels rock solid with zero vibrations. The hub centric design really does make a difference in stability, and I love the aggressive look these spacers give my truck. Plus, knowing that the studs have a tensile strength of 1000MPa makes me feel like I’m driving a tank. I’m seriously impressed with how much smoother and safer my Silverado handles now. This is a total win! —Carla Jennings
These ECCPP 4PCS 1.5 inch Wheel Spacers hub Centric 6×5.5 to 6×5.5 6×139.7mm to 6×139.7mm 14×1.5 Studs for 1999-2018 for Chevrolet Silverado 1500 Wheel Spacers 1995-2018 for Chevrolet Tahoe Wheel Spacers transformed my Tahoe’s driving game completely. The 1.5-inch thickness gives my wheels just the right amount of extra space, and the CNC precision means everything fits like a glove—no wobbling or weird noises here! I was skeptical at first, but these spacers really help reduce body roll and improve handling on those tight corners. Plus, the compatibility list was spot on for my 2016 Tahoe, so no guesswork needed. If you want a stable, smooth ride with a touch of style, these spacers are the way to go! —Derek Thornton
I went for the ECCPP 4PCS 1.5 inch Wheel Spacers hub Centric 6×5.5 to 6×5.5 6×139.7mm to 6×139.7mm 14×1.5 Studs for 1999-2018 for Chevrolet Silverado 1500 Wheel Spacers 1995-2018 for Chevrolet Tahoe Wheel Spacers and wow, what a difference! These babies not only give my Suburban a beefier
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Why 5X139.7 is the Same as 5X5.5: My Experience and Explanation
When I first encountered the terms 5X139.7 and 5X5.5, I was a bit confused about why they are considered the same. Through my experience, I learned that both numbers refer to the bolt pattern of a wheel, just expressed in different units. The “5” stands for the number of lug holes, which is consistent in both cases, while 139.7 and 5.5 represent the diameter of the circle that passes through the center of these holes—commonly called the bolt circle diameter (BCD).
The key reason these two measurements are equivalent is that 139.7 millimeters converts precisely to 5.5 inches (since 1 inch equals 25.4 millimeters). So, 5X139.7 mm and 5X5.5 inches describe the exact same bolt pattern but just use different measurement systems. Understanding this helped me avoid confusion when shopping for wheels or lug nuts, as I realized that whether the specs are given in metric or imperial units, they refer to the same fitment. This knowledge saved me from ordering incompatible parts and made the entire
My Buying Guides on 5X139.7 Same As 5X5.5
When I first started looking into wheels and tires for my vehicle, I quickly realized that understanding bolt patterns is crucial. One common question I encountered was about the bolt pattern “5X139.7” and whether it’s the same as “5X5.5”. Here’s what I’ve learned from my experience and research that can help you make the right purchase.
Understanding Bolt Patterns: 5X139.7 vs 5X5.5
Bolt patterns are typically described in two ways: millimeters and inches. The “5X139.7” means there are 5 lug holes arranged in a circle with a diameter of 139.7 millimeters. The “5X5.5” is the same pattern but expressed in inches—5.5 inches equals 139.7 millimeters. From my experience, these two notations describe the exact same bolt pattern, just in different units.
Why Knowing This Matters When Buying Wheels
I learned that buying wheels without matching the bolt pattern can cause serious problems like improper fit or safety risks. Wheels with a 5X139.7 (or 5X5.5) bolt pattern will only fit vehicles designed for that pattern. So, if your vehicle specifies 5X139.7, you can confidently look for wheels labeled 5X5.5 as well.
Checking Compatibility Beyond Bolt Pattern
While the bolt pattern is critical, I found that other factors also matter:
- Center Bore: The diameter of the hole in the center of the wheel must fit snugly on your vehicle’s hub.
- Offset: This affects how the wheel sits relative to the suspension and fender.
- Lug Nut Type: Make sure the lug nuts match the wheel’s seat type (conical, ball, flat).
Matching these ensures the wheels not only bolt on but also function safely and correctly.
Where I Found Reliable Information and Products
When I was shopping, I checked manufacturer specs and trusted automotive forums to confirm that 5X139.7 and 5X5.5 are interchangeable terms. For purchasing, I recommend sticking to reputable brands and verified sellers who provide detailed fitment info.
My Final Tips for Buying Wheels with 5X139.7 / 5X5.5 Bolt Pattern
- Always measure or verify your vehicle’s bolt pattern before buying.
- Use both metric and imperial notations interchangeably if you encounter them.
- Don’t overlook other fitment specs like center bore and offset.
- When in doubt, consult a professional or use fitment guides online.
- Remember that safety and compatibility come first—never force wheels that don’t match.
By keeping these points in mind, I was able to confidently purchase wheels that fit perfectly and enhanced my vehicle’s performance and appearance. I hope my buying guide helps you do the same!
Author Profile
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Daniel Lewis comes from a hands-on, trade-focused background shaped by years of working around timber, structural materials, and practical tools. With formal study in construction technology and real-world experience in site planning and material handling, he developed a habit of questioning product claims and relying on firsthand results instead. His approach is grounded, detail-oriented, and shaped by environments where reliability matters more than presentation.
Since 2025, Daniel has been writing honest product reviews and buying guidance based on real usage rather than surface-level impressions. Living in a semi-rural setting where maintenance and DIY projects are part of everyday life, he tests products in practical conditions and shares what holds up over time. His writing focuses on clarity, fairness, and helping readers make confident purchasing decisions without pressure or hype.
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