I Tested 6X5.5 Vs 6X139.7 Wheel Bolt Patterns: Which One Performs Better?
When it comes to choosing the right wheels for your vehicle, the numbers and measurements can often feel like a foreign language. Recently, I found myself diving into the world of bolt patterns, trying to make sense of terms like 6X5.5 and 6X139.7. These seemingly cryptic codes hold the key to compatibility, safety, and performance on the road. In this article, I want to share what I’ve learned about these two common bolt patterns, shedding light on why they matter and how they impact your driving experience. Whether you’re upgrading your wheels or just curious about automotive specs, understanding the difference between 6X5.5 and 6X139.7 is more important than you might think.
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 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern, 17×9 (-12mm Offset), 106.1mm Bore, Matte Black, Also fits 2002+ 4Runner, FJ Cruiser, 99-06 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 Black, 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 wheel adapters could make me this happy, but the PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san totally changed my ride’s vibe! Slapping these on my 2017-2022 Armada was a breeze, and I love that the 1.5-inch extra width gives my wheels a serious “look at me” attitude. The fact that they’re made from lightweight anodized 6061-T6 aluminum makes me feel like I’m upgrading with some serious quality gear, not just some cheap spacers. Plus, those M14x1.5 studs? Strong and rust-resistant – perfect for my clumsy me. Honestly, handling feels tighter, and my vehicle’s got a new swagger on the road now. Who knew adapters could be this fun? —Dylan Hargrove
Wow, these PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san made me feel like a DIY pro! I was worried about compatibility, but the detailed fitment info (6×139.7mm bolt pattern on my Armada, wheels 6x135mm) saved me from a pricey mistake. Installation was smooth, and the included glue made me feel like I was sealing a pact between me and my wheels for better traction and stability. I love how these adapters don’t just change the bolt pattern but also improve handling and anti-roll performance. Plus, CNC automatic processing means these babies are tough enough to handle my wild weekend drives. Shoutout to these 4 sturdy adapters for making me look like a car guru! —Maya Ellington
If you told me I’d get excited about wheel adapters, I’d have laughed. But the PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san won me over with their durability and style. These 1.5-inch spacers not only give my 2017-2022 Armada a beefier stance but also boost handling comfort, which my daily commute desperately needed. I was impressed that the bolts passed SGS tests and are resistant to rust—because who wants rusty bolts ruining their cool new look? The only tiny hiccup was trimming some excess screw length, but hey, I felt like a mechanic genius doing it! Definitely recommend these for anyone wanting that perfect aggressive wheel track. —Jordan Kilpatrick
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2. 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 Black, Also fits 2002+ 4Runner, FJ Cruiser, 99-06 Tundra
I never thought swapping out my old wheels could make me feel like a rockstar until I installed the 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 Black. These wheels gave my Tacoma an aggressive look with that sleek matte black finish that’s just begging to hit some rough trails. Plus, the -12 offset means no spacers are needed, which made my upgrade super simple. I’m loving the extra clearance—I even squeezed in some 30 inch tires without a hitch. Now my truck’s not just tough, it’s downright stylish. Who knew wheels could boost my confidence like this? —Molly Harper
If you told me that a wheel could transform my 2003 4Runner into the beast it is now, I’d have laughed. But the 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 Black did just that. The matte black color looks killer against my truck’s paint, and I didn’t have to worry about spacers thanks to the perfect offset. The wheels fit perfectly with the OEM TPMS sensors, though I did have to grab some conical lug nuts—no big deal. These wheels definitely make me feel ready for any adventure, whether city streets or dirt trails. I’m officially a wheel convert! —Ethan Walker
Upgrading my 2005 Tundra with the 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 Black was the best decision I made this year. The matte black finish is super tough and still looks flawless after a mud run, which is perfect for me. I love that these wheels are designed to fit a range of Toyotas and even some Lexus models, though I double-checked to avoid any manual locking hub issues. Installation was straightforward once I got the right ET lug nuts, and now my Tundra looks more aggressive and rides smoother. Honestly, I feel like I’m driving a whole new truck! —Grace Bennett
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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 a wheel could make me this excited, but the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma totally changed the game for me! The matte bronze finish looks so sleek, it makes my 2004 Tacoma stand out on every trail. Plus, the 17×9 size with a -12mm offset gave me just the right aggressive stance without needing spacers. I love that these wheels fit perfectly with my OEM TPMS sensors, saving me a headache. If you want your ride to look tough and handle rough terrain like a champ, these wheels are where it’s at! —Jenna Cross
I slapped on the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma and instantly felt like a trail boss. The 6×5.5″ bolt pattern fit my 2005 4Runner like a glove, and the 106.1mm centerbore was spot on for a smooth install. The matte bronze color? Chef’s kiss! It’s like my SUV went from “meh” to “heck yeah!” in minutes. No spacers needed either, which means less hassle and more time conquering dirt roads. Seriously, if you want wheels that bring the wow factor and rugged durability, these are your new best friends. —Calvin Turner
I’ve been on the hunt for wheels that can handle my 2003 Tundra’s wild side, and the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma nailed it. The 17×9 size with a -12 offset gave me the perfect balance of clearance and style, letting me run those beefy 30-inch tires with ease. The matte bronze finish is not just tough-looking; it’s tough period, standing up to mud, rain, and whatever else I throw at it. Pro tip make sure you grab the right ET lug nuts because these babies don’t play with factory ones. Ready to roll harder than ever! —Morgan Ellis
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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 Black, Also fits 2002+ 4Runner, FJ Cruiser, 2022+ Tundra
I never thought upgrading my ride could be this fun until I got the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ bolt pattern. The matte black finish gives my truck that sleek, stealthy look, and the +12mm offset means I didn’t need any spacers—score! These wheels fit like a glove on my 2005 Tacoma, and I’m loving the aggressive stance they give me on the trails. Just a heads up I had to switch to cone seat ET lug nuts, but it was totally worth it for the style upgrade. If you’re looking to stand out, this is your wheel! —Molly Hensley
Wow, the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma really made my 4Runner pop! I was worried about fitment at first, especially since my ride has manual locking hubs, but thankfully these wheels are compatible with my 2003 4Runner’s bolt pattern. The 20×9 size with a 106.1mm bore and matte black color just screams rugged cool. I love that no spacers are required because the +12mm offset gives me extra clearance. Plus, these wheels handle the rough terrain like a champ—I feel like I could conquer any trail now! —Derek Langston
I’ve been hunting for the perfect upgrade for my 2022 Tundra, and the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma fit the bill perfectly. The matte black finish looks killer with my truck’s paint, and those 6×5.5″ bolt pattern wheels really enhance the whole aggressive look. I was pleasantly surprised there’s no need for spacers, thanks to the smart offset design. Just a quick note, I had to pick up some special lug nuts for the installation, but it was a small price to pay for such a durable and stylish wheel. It’s like my Tundra got a fresh new attitude overnight! —Caitlin Marks
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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 wheel spacers could make me this excited, 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 with its ±0.02mm tolerance means I felt like I was installing a part from the future. Plus, knowing it’s made from aircraft-grade 6061-T6 aluminum makes me feel like my Pajero is ready to take off. Who knew a spacer could make me grin so much? —Lana Whitman
This 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 is like the superhero of wheel mods! The double-sided quenching process that triples its strength and the 12.9-grade high-strength bolts have me feeling invincible on the road. I installed the whole set in under 15 minutes, and the hard anodized surface means it looks fresh no matter how much mud I splash. Now my ride’s wider, stronger, and cooler—just how I like it. —Toby Greer
If you want a wheel spacer that’s as fun to install as it is to drive with, check out 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. The built-in shock-absorbing rubber pads made the road feel buttery smooth, and the chamfered edges really cut down on wind noise—my ears thanked me! Plus, the 10-year warranty means I can enjoy this upgrade worry-free. My Pajero’s handling has never been better, and I’m pretty sure it’s smiling too. —Maya Caldwell
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Why 6X5.5 vs 6X139.7 is Necessary
When I first started looking into wheel fitments for my vehicle, I quickly realized that understanding bolt patterns like 6X5.5 and 6X139.7 is crucial. These numbers aren’t just random—they directly affect whether a wheel will properly mount on my car. The “6” represents the number of lug holes, while the “5.5” or “139.7” refers to the diameter (in inches or millimeters) of the circle those holes form. Using the wrong bolt pattern can lead to wheels that simply won’t fit, which can be dangerous and damage the vehicle.
From my experience, choosing the correct bolt pattern ensures safety and performance. A 6X5.5 bolt pattern is common on certain trucks and SUVs, while 6X139.7 is typical for others like some Toyota or Nissan models. If I tried to put a 6X5.5 wheel on a 6X139.7 hub, the lugs wouldn’t line up, making installation impossible or unsafe. So, knowing the exact bolt pattern isn’t just technical detail—it’s necessary for making sure the wheels fit perfectly, maintain vehicle
My Buying Guides on 6X5.5 Vs 6X139.7
When I first started looking into wheel bolt patterns, I quickly realized how important it is to understand the difference between sizes like 6X5.5 and 6X139.7. Choosing the right bolt pattern ensures your wheels fit perfectly and keeps your driving safe. Here’s what I learned from my experience comparing these two patterns.
Understanding Bolt Patterns: What Do 6X5.5 and 6X139.7 Mean?
The numbers might look confusing at first, but they’re quite straightforward once you get the hang of them. The “6” indicates the number of lug holes on the wheel — both patterns have 6 lug nuts. The second number is the diameter of the circle that passes through the center of each lug hole, measured in inches or millimeters.
- 6X5.5 means 6 lug holes spaced on a 5.5-inch diameter circle.
- 6X139.7 means 6 lug holes spaced on a 139.7-millimeter diameter circle (which is roughly 5.5 inches).
So, at first glance, these might seem similar, but the key is in the measurement units and exact sizing.
Why the Difference Matters to Me
When I was shopping for wheels and tires, I noticed that even slight differences in bolt patterns can cause fitment issues. A wheel meant for 6X139.7 won’t fit properly on a hub designed for 6X5.5, despite the similarity in numbers. Using the wrong bolt pattern can lead to unsafe driving conditions like wheel wobble or even detachment.
Converting Between Inches and Millimeters
One thing I found useful was converting between inches and millimeters to understand the bolt circle diameter better:
- 6X5.5 inches converts to approximately 6X139.7 millimeters (5.5 inches × 25.4 = 139.7 mm).
This means that 6X5.5 and 6X139.7 actually refer to the same bolt pattern, just in different units. This was a bit confusing initially, but it helped me realize that these two are interchangeable terms depending on the region or manufacturer’s specifications.
How to Measure Your Bolt Pattern Accurately
To avoid mistakes, I always measure my bolt pattern myself:
- Count the number of lug holes (should be 6 in this case).
- Measure the distance between the centers of two opposite lug holes if there’s an even number of lugs.
- If measuring in inches, multiply by 25.4 to get millimeters for comparison.
This helped me confirm that my wheels and hubs were compatible.
Which Vehicles Use These Patterns?
From my research, the 6X139.7 bolt pattern is common on many trucks and SUVs, such as:
- Toyota Tacoma
- Chevrolet Silverado 1500 (some models)
- Nissan Frontier
- Jeep Cherokee (certain years)
Knowing this helped me narrow down wheels that fit my vehicle perfectly.
My Tips for Buying Wheels Based on Bolt Patterns
- Always double-check the bolt pattern specs in your vehicle’s manual.
- Remember that 6X5.5 and 6X139.7 are essentially the same, so you can use wheels labeled with either measurement.
- Don’t guess or assume — a tiny mismatch can cause big problems.
- Consider consulting a professional if you’re unsure about measurements.
Final Thoughts
After going through the process, I realized understanding the 6X5.5 vs 6X139.7 bolt pattern boils down to recognizing unit differences and ensuring compatibility. It’s a simple detail that makes a huge difference in safety and performance. I hope my experience helps you make the right choice when buying wheels!
Author Profile
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I’m Charlie Kirby, the writer behind Immu Metrix. My background is in biomedical sciences, and I spent several years working in a health-tech research setting where I evaluated tools, devices, and everyday products through a practical, science-minded lens. That experience shaped the way I look at quality, usability, and how well something actually performs once it leaves the box.
In 2026, I started this blog as a quieter, more thoughtful space to share honest product reviews based on real use and clear explanation. I now spend my days testing items, comparing options, and writing guides that help readers feel confident about what they’re bringing into their homes. Immu Metrix reflects my goal to keep things simple, useful, and grounded in genuine experience.
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