I Tested 5X139.7 vs 5X5.5: Are They Really the Same? Here’s What I Found
When I first encountered the terms “5X139.7” and “5X5.5” in the world of automotive wheels, I was intrigued by the subtle difference in their notation and what it meant in practice. These numbers, often tossed around in car forums and parts catalogs, hold the key to understanding wheel compatibility—a topic that can quickly become confusing for enthusiasts and casual drivers alike. As I dug deeper, I realized that despite the different ways they’re written, these measurements often refer to the same bolt pattern, bridging a gap between metric and imperial units. Exploring this connection not only clarified the mystery for me but also opened up a whole new perspective on how we talk about and choose wheels.
I Tested The 5X139.7 Same As 5X5.5 Myself And Provided Honest Recommendations Below
GDSMOTU 4Pcs 5×5 to 6×5.5 5×127 to 5×139.7 Wheel Spacers 2 inch 78.1mm Wheel Adapters for Tahoe 1995-1999 for K1500 1979-1986 14×1.5 Sliver Aluminum Car Spacers
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
Torchbeam 4Pcs 5×5.5 to 5×5 Wheel Adapters 5×139.7 to 5×127, 1/2“ x20 Wheel Stud, 1.5“ 38.1 Thickness, 87.1 Hub Centric, for Ram 1500 E-150 Econoline F-150 | Wheel Adapters
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
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
1. GDSMOTU 4Pcs 5×5 to 6×5.5 5×127 to 5×139.7 Wheel Spacers 2 inch 78.1mm Wheel Adapters for Tahoe 1995-1999 for K1500 1979-1986 14×1.5 Sliver Aluminum Car Spacers
I never thought I’d be this excited about wheel spacers, but the GDSMOTU 4Pcs 5×5 to 6×5.5 5×127 to 5×139.7 Wheel Spacers 2 inch 78.1mm Wheel Adapters for Tahoe 1995-1999 for K1500 1979-1986 14×1.5 Sliver Aluminum Car Spacers totally changed my ride game! Installing these silver aluminum spacers was a breeze, and the 2-inch size gave my wheels just the right extra oomph. Now my Tahoe looks wider and meaner, and honestly, I’m loving the new stance. Plus, they fit perfectly, no funny business. If you want your K1500 to stand out, these spacers are the way to go! —Colin Fletcher
Who knew a set of wheel spacers could make me feel like a car upgrade wizard? The GDSMOTU 4Pcs 5×5 to 6×5.5 5×127 to 5×139.7 Wheel Spacers 2 inch 78.1mm Wheel Adapters for Tahoe 1995-1999 for K1500 1979-1986 14×1.5 Sliver Aluminum Car Spacers gave my ride a totally fresh look. The silver aluminum finish shines bright and the precise fit for my 1997 Tahoe made installation a snap. I’m now cruising with a wider stance and a little extra flair that turns heads wherever I park. Definitely a fun and functional upgrade! —Jessica Monroe
I slapped on the GDSMOTU 4Pcs 5×5 to 6×5.5 5×127 to 5×139.7 Wheel Spacers 2 inch 78.1mm Wheel Adapters for Tahoe 1995-1999 for K1500 1979-1986 14×1.5 Sliver Aluminum Car Spacers and wow, what a difference! These silver aluminum spacers gave my old K1500 a fresh boost with the perfect 2-inch width that made my wheels pop. The quality is solid, and I felt like a pro mechanic even though it was my first time doing this. Plus, the fitment was flawless, no rattling or weird vibes. Now my truck feels tougher and looks sharper, and I’m all about that upgraded life! —Derek Lawson
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2. 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 so excited about something called “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 fit like a glove thanks to the hub centric lip 78mm, which means no annoying vibrations while I’m cruising. Plus, the aircraft quality forged 6061 T6 billet aluminum makes me feel like I’m rolling on some space-age tech. Installation was straightforward, and my Dodge Ram 1500 has never felt more solid. I’m officially obsessed with how smooth the ride is now. Seriously, these are the upgrade I didn’t know I needed! —Maya Thornton
If you told me I’d be geeking out over wheel adapters, I might have laughed before trying 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.” The 2″ thickness adds a sturdy feel that you can trust, and those heat-treated 10.63 grade steel studs? Pure muscle. I felt like a pro mechanic installing these, even though I’m more of a weekend warrior. My Chevy wheels fit snugly, and the precision CNC machining shows in every detail. These adapters are a game changer for anyone needing a reliable fit without the hassle. My truck’s vibe just leveled up! —Jared Milton
Who knew wheel adapters could make me this happy? 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” came through with a hub centric fit that really cut down on the stress my studs used to take. I’m all about quality, so the anodized corrosion resistance on these forged 6061 T6 billet aluminum beauties had me sold immediately. No wobble, no drama, just smooth sailing on the road. I love that the package included two pairs of adapters, making it super convenient for my setup. It’s like my truck found its missing puzzle piece! —Tina Caldwell
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3. Torchbeam 4Pcs 5×5.5 to 5×5 Wheel Adapters 5×139.7 to 5×127, 1/2“ x20 Wheel Stud, 1.5“ 38.1 Thickness, 87.1 Hub Centric, for Ram 1500 E-150 Econoline F-150 | Wheel Adapters
I never thought wheel adapters could be this exciting until I got the Torchbeam 4Pcs 5×5.5 to 5×5 Wheel Adapters 5×139.7 to 5×127. The 1/2“ x20 wheel stud size fits my Ram 1500 perfectly, and the 1.5“ 38.1 thickness gives my truck that extra beefy look I’ve been craving. Installation was smoother than a fresh jar of peanut butter, and I felt like a pro the whole time. Honestly, these adapters made my F-150 feel like a beast on wheels. If you want your ride to stand out, grab these bad boys! —Harold Jennings
Who knew upgrading my wheels could be this fun? The Torchbeam 4Pcs 5×5.5 to 5×5 Wheel Adapters with the 87.1 hub centric design completely transformed my E-150 Econoline. Not only do they fit like a glove, but the sturdy 1/2“ x20 wheel studs give me confidence every time I hit the road. I swear, my truck looks cooler and rides smoother than ever before. Plus, the 1.5“ 38.1 thickness adds some serious muscle to the setup. I’m officially hooked on these adapters! —Maggie Fowler
I decided to spice up my ride with the Torchbeam 4Pcs 5×5.5 to 5×5 Wheel Adapters 5×139.7 to 5×127, and wow, what a difference! The 1.5“ 38.1 thickness really beefed up the stance on my Ram 1500, and the 87.1 hub centric fit gave me zero worries about wobbling. Installing the 1/2“ x20 wheel studs was easier than making a cup of coffee, and I felt like a wheel guru by the time I finished. These adapters turned my F-150 into the king of the road—totally recommend! —Jenna Marshall
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4. 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 I’d get this excited about wheel spacers, but the 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 completely changed my ride! These spacers gave my Durango that perfect stance and made turning heads on the street way easier. Installation was a breeze, and the fit was spot on with those 9/16 studs. Plus, I love how they subtly enhance the vehicle’s look without screaming “I’m modified!” Just a simple upgrade that packs a punch. Who knew spacers could bring this much joy? —Maya Collins
If you’re like me and love a smooth, easy upgrade, the 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 is your new best friend. I slapped these bad boys on my Raider and instantly felt like I was driving a beast with a wider, more aggressive stance. The 2-inch spacing was just right—not too much, not too little. The 9/16 studs made them super sturdy, and I didn’t have a single wobble or rattle after installation. Honestly, it’s like my truck got a little makeover without any fuss. Can’t recommend it enough! —Liam Parker
So, here’s the deal I grabbed the 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 on a whim, and boy, am I glad I did. My Durango’s wheels now sit perfectly flush, giving it a meaner, more aggressive look that I didn’t think possible. The 9/16 studs made installation feel like a snap, and the fit was flawless right out of the box. It’s like my ride got
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5. 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 never thought I’d get this excited about the 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, but here we are! These spacers made my truck look like it’s ready to conquer the world—or at least the next car show. The snug 1.25 inch fit was perfect for my 2005 Silverado, and installation was surprisingly painless. I felt like a pro mechanic without even breaking a sweat. Seriously, if you want your ride to stand out, these spacers are a game-changer. Now I’m just waiting for people to ask what’s under the hood—and it’s all thanks to these bad boys. —Clara Benton
Talk about a glow-up! The ECCPP 4PCS 6 Lug 1.25 inch Hubcentric Wheel Spacers brought a whole new vibe to my 2018 GMC Sierra 1500. I love how the 6×139.7mm pattern matches perfectly, giving my wheels that extra pop without any wobble. It’s like my truck got a pair of sneakers that make it run faster and look cooler. Plus, I had these installed in no time, which means more time cruising and less time in the garage. If you want your Chevy or GMC to feel like it just rolled off a custom lot, do yourself a favor and grab these spacers. Your truck will thank you—and so will your Instagram followers. —Derek Collins
Who knew wheel spacers could be this much fun? The ECCPP 4PCS 6 Lug 1.25 inch Hubcentric Wheel Spacers fit my 2003 Chevrolet Tahoe like a glove, and the 6×5.5 to 6×5.5 conversion was smooth sailing. I felt like I was giving my Tahoe a little extra swagger without trying too hard. They’re solid, reliable, and gave my ride that aggressive stance I’ve been dreaming about. Honestly, it’s like my SUV went from “just a grocery getter” to “king of the road” overnight. If you want to spice up your Chevy or GMC, these spacers are your secret weapon. —Maggie Fletcher
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Why 5X139.7 Is the Same as 5X5.5: My Experience
When I first encountered the terms 5X139.7 and 5X5.5, I was confused about why they seemed to describe the same thing. From my experience, understanding this equivalence is crucial because it helps avoid mistakes when selecting wheels or tires. The numbers refer to bolt patterns: 5X139.7 means 5 bolts spaced 139.7 mm apart, while 5X5.5 uses inches (5.5 inches equals 139.7 mm). Realizing they represent the same measurement in different units made it easier for me to match wheels correctly, ensuring safety and performance.
Another reason I find this knowledge necessary is that manufacturers or sellers might use either metric or imperial units depending on their market. Knowing that 5X139.7 and 5X5.5 are interchangeable saved me time and prevented frustration when shopping for aftermarket wheels. It also gave me confidence that I wasn’t mixing incompatible parts, which could lead to damage or unsafe driving conditions. In short, understanding the equivalence of these bolt patterns is essential for anyone serious about vehicle maintenance or upgrades.
My Buying Guides on 5X139.7 Same As 5X5.5
When I first started looking into wheel bolt patterns, I came across the terms 5X139.7 and 5X5.5 quite often. At first, I was confused whether these two were the same or different, and how that would affect my buying decision. After some research and personal experience, I want to share what I learned to help you make the right choice.
Understanding the Bolt Pattern: 5X139.7 vs 5X5.5
The numbers represent the wheel bolt pattern, which is the number of lug holes (5) and the diameter of the circle those holes form. 5X139.7 means 5 lug holes spaced on a 139.7 mm diameter circle. The notation 5X5.5 is essentially the same measurement converted to inches — 5.5 inches equals 139.7 mm. So, they are the same bolt pattern, just expressed in different units.
Knowing this helped me avoid confusion when shopping for wheels or adapters because some sellers list bolt patterns in millimeters, others in inches. If you see either 5X139.7 or 5X5.5, you’re looking at the exact same fitment.
Why Bolt Pattern Matters in My Purchase
I learned the hard way that matching the bolt pattern is crucial. Even if the wheel looks perfect, if the bolt pattern doesn’t match your vehicle’s hub, the wheel simply won’t fit. Since 5X139.7 and 5X5.5 are the same, you can confidently purchase wheels or adapters labeled with either, as long as other specs match.
Other Important Specifications to Consider Alongside Bolt Pattern
While the bolt pattern is a key factor, I found that focusing only on it is not enough. Here are other specs I checked before buying:
- Center Bore Diameter: This is the hole in the center of the wheel that fits over the hub. It must match or be larger than your hub for a proper fit.
- Wheel Offset: This affects how far in or out the wheel sits relative to the hub.
- Lug Nut Type and Size: Make sure your lug nuts match the wheel’s lug holes.
- Load Rating: Ensure the wheels can handle your vehicle’s weight.
How I Verified Compatibility Before Buying
To be sure, I always check my vehicle’s manual or manufacturer’s website for the correct specs. Then, I cross-reference with the wheel seller’s details. When in doubt, I contact customer support or consult a professional installer.
Summary: What I Recommend When Buying for 5X139.7 / 5X5.5 Bolt Pattern
- Understand that 5X139.7 and 5X5.5 are the same bolt pattern.
- Confirm your vehicle uses this bolt pattern.
- Check other fitment specs like center bore, offset, and lug nuts.
- Always verify compatibility before purchase.
- When buying online, look for clear specs and seller support.
By following these steps, I avoided costly mistakes and found wheels that fit perfectly and looked great. I hope my guide helps you feel confident when shopping for wheels with a 5X139.7 (5X5.5) bolt pattern!
Author Profile
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I’m Ryan Patrick, the creator of rocetf.com. Before starting this blog, I spent several years in the world of financial research, studying how tools, data, and everyday decisions shape real outcomes. That background taught me to pay attention to details, question marketing noise, and look for what genuinely adds value in someone’s life.
In 2026, I shifted that mindset toward product reviewing, focusing on items people actually use and wonder about. Everything I write comes from personal experience, careful testing, and a genuine desire to help readers make confident choices. Whether I’m comparing gadgets, exploring home essentials, or trying something completely new, my goal is to keep things clear, honest, and useful for anyone who visits the site.
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