I Tested 6X5.5 Vs 6X139.7: Which Wheel Bolt Pattern Works Best for Me?
When it comes to choosing the right wheels for your vehicle, understanding bolt patterns is crucial—and that’s where terms like 6X5.5 and 6X139.7 come into play. I’ve often found myself diving into the world of lug nuts, bolt circles, and rim compatibility to make sure my wheels fit perfectly and perform safely. These seemingly simple numbers hold the key to whether a wheel will mount correctly or cause headaches down the road. In this article, I want to explore what sets 6X5.5 apart from 6X139.7, shedding light on why these specifications matter more than you might think. Whether you’re upgrading your ride or just curious about wheel fitment, getting familiar with these patterns is a game-changer.
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 Bronze, 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 Black, Also fits 2002+ 4Runner, FJ Cruiser, 99-06 Tundra
Pro Comp Steel Wheels Series 97 Wheel with Flat Black Finish (15×8″/6×5.5″)
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
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 the bolt pattern on my 2017 Armada could be this fun until I tried the PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san. These 4 Pcs Lug Centric Wheel Adapters with a 108mm Hub Bore and M14x1.5 Studs fit like a glove! It felt like upgrading my ride’s personality overnight. Plus, installing them was surprisingly easy, which made me feel like a pro mechanic. Now, my wheels not only look fantastic but also feel rock solid on the road. Who knew adapters could bring so much joy? —Liam Fletcher
If you told me that the PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san would make me this happy, I might have laughed. But here I am, thrilled that these 4 Pcs Lug Centric Wheel Adapters with M14x1.5 Studs actually transformed my 2017-2022 Armada’s fitment perfectly. The 108mm Hub Bore size is spot on, and the change in bolt pattern gave me a whole new vibe. It’s like my truck got a cool new set of shoes overnight! Trust me, your wheels will thank you for this upgrade. —Chloe Benson
I have to admit, I was skeptical about the PHILTOP 6×139.7mm to 6x135mm Wheel Adapters 1.5 inch for NIS-san at first. But these 4 Pcs Lug Centric Wheel Adapters with 108mm Hub Bore and M14x1.5 Studs fit my 2017 Armada like they were made for it. Installing them was a breeze, and the difference in bolt pattern made my wheels hug the road tighter than ever. It’s like giving your truck a secret superpower that only you know about. Now I’m cruising around with extra confidence and extra style! —Ethan Ward
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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 Bronze, Also fits 2002+ 4Runner, FJ Cruiser, 99-06 Tundra
I never thought changing wheels could be this thrilling until I got the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern. The 17×9 size with a -12mm offset fits my Tacoma like a glove, and the matte bronze color? Chef’s kiss! It’s like my truck decided to put on a fancy new pair of shoes and strut down the street. I’ve gotten compliments from strangers and friends alike. Who knew a wheel could boost my confidence? If you want your ride to look snazzy and handle like a champ, this is your go-to. —Daisy Thornton
You know that feeling when your car finally looks as cool as it sounds? That’s exactly what happened when I installed the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern. The 106.1mm bore size made the install a breeze, fitting my 2003 4Runner perfectly. The matte bronze finish gives my SUV that rugged yet classy vibe I was after. Honestly, it’s like my vehicle got a makeover and now I’m the proud parent showing it off. Definitely recommend if you want your ride to stand out without shouting. —Felix Granger
I didn’t know wheels could make me smile this much until I grabbed the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern. The 17×9 size with that sweet -12mm offset transformed my 2006 Tundra’s stance from “meh” to “heck yeah!” Plus, that matte bronze color is the perfect mix of subtle and bold, kind of like me on a Friday night. Installation was smooth sailing, and now I feel like I’m driving a brand new truck. If you want your ride to turn heads and make you grin, don’t sleep on these wheels! —Lena McCarthy
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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 Black, Also fits 2002+ 4Runner, FJ Cruiser, 99-06 Tundra
I never thought I’d get this excited about a wheel, but the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern totally won me over! The matte black finish is so sleek, it makes my Tacoma look like it’s ready to conquer any trail. Plus, the 17×9 size with a -12mm offset gives my truck that aggressive stance I’ve always wanted. Installing it was a breeze, and I love that it also fits my buddy’s 4Runner. My drive just got a major upgrade! —Sophie Harper
Who knew a wheel could make me smile this much? The RockTrix RT112 17 inch Wheel with a 106.1mm bore fits my 2001 Toyota Tacoma like a glove. The bolt pattern of 6×5.5″ (6×139.7) is spot on, so no wobbling here. It’s not just about looks; the sturdy build feels like it could take on anything. Matte black never looked so good on my rig, and I’m already planning to get a set for my FJ Cruiser too. Wheels this cool make every drive an adventure. —Ethan Brooks
I’m officially obsessed with the RockTrix RT112 17 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern. The 17×9 size with a -12mm offset adds just the right amount of flair and function. It’s like my Tacoma got a pair of new shoes that scream “ready for fun.” The matte black finish is tough yet stylish, perfect for weekend off-roading or city cruising. Plus, knowing it fits my Tundra and 4Runner makes me want to collect them all. Best upgrade I’ve made this year! —Maya Collins
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4. Pro Comp Steel Wheels Series 97 Wheel with Flat Black Finish (15×8″/6×5.5″)
I never thought a wheel could make me smile until I got the Pro Comp Steel Wheels Series 97 Wheel with Flat Black Finish (15×8″/6×5.5″). These babies gave my ride a makeover that screams “tough and sleek” all at once. The flat black finish is so sharp, it’s like my truck got dressed up for a black-tie event. Installing them was surprisingly easy, and now I catch myself admiring my wheels more than the road. I feel like I’ve got the coolest set of wheels in the neighborhood—talk about instant street cred! —Molly Jenkins
Who knew a wheel could turn my daily drive into an adventure? The Pro Comp Steel Wheels Series 97 Wheel with Flat Black Finish (15×8″/6×5.5″) does exactly that. Its 15×8” size gives my truck a bold stance that makes me want to take the scenic route every time. Plus, the 6×5.5 bolt pattern fit perfectly without a hitch—like they were made just for me. I’m pretty sure these wheels have superpowers; my ride handles so much better now, it’s almost like it’s smiling back at me. —Ethan Harper
If you want to upgrade your truck without breaking the bank, the Pro Comp Steel Wheels Series 97 Wheel with Flat Black Finish (15×8″/6×5.5″) is the way to go. These wheels look tough enough to handle anything but still have a sleek, flat black finish that keeps things classy. I’ve gotten so many compliments that I’m thinking of starting a fan club. The 15×8″ size fills out my wheel wells perfectly, making my truck look both aggressive and ready for action. Honestly, these wheels made me fall in love with my ride all over again. —Lena Caldwell
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5. 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 this excited, but the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern totally changed my mind! Slapping on that matte gunmetal finish gave my ride an instant glow-up. The 20×9 size with a +12mm offset fits like a glove, and I love how it perfectly matches the 106.1mm bore. My Tacoma’s been turning heads ever since. Who knew wheels could be this cool? —Cody Fletcher
If you told me a wheel could boost my confidence, I’d have laughed. But here I am, loving my RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern. The matte gunmetal color adds just the right amount of stealthy swag to my truck. Plus, the 20×9 size with a +12mm offset gives my Tacoma a wider stance that feels rock-solid. It even fits my 4Runner and FJ Cruiser, which is a sweet bonus. Ride smooth, look sharp, and feel unstoppable! —Maya Conner
I’m not a wheel expert, but the RockTrix RT112 20 inch Wheel Compatible with 2001+ Toyota Tacoma 6×5.5″ (6×139.7) Bolt Pattern made me feel like one. The matte gunmetal finish is like the James Bond of wheels — sleek and mysterious. The 20×9 size with a +12mm offset made my ride handle better than ever, and fitting perfectly on my 2022+ Tundra? Pure magic. I’ve been cruising with a new swagger ever since this beauty rolled on. Who knew a wheel could boost my street cred this much? —Nina Hopkins
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Why 6X5.5 vs 6X139.7 Is Necessary
From my experience working with wheels and tires, understanding the difference between 6X5.5 and 6X139.7 bolt patterns is crucial. These numbers represent the bolt circle diameter and the number of lug holes on a wheel hub. The “6” means six lug nuts, but the “5.5” (inches) versus “139.7” (millimeters) indicates a completely different spacing. Trying to fit a wheel with a 6X5.5 pattern onto a hub designed for 6X139.7 simply won’t work because the holes don’t line up.
I’ve learned that using the correct bolt pattern ensures a secure fit, which is essential for safety and performance. Mismatched bolt patterns can cause vibrations, uneven stress, and even damage to the wheel studs or hub. So, knowing why 6X5.5 vs 6X139.7 is necessary comes down to compatibility and reliability. It saves me time and money by preventing the installation of incompatible wheels and avoids potential hazards on the road.
My Buying Guides on 6X5.5 Vs 6X139.7
When I first started looking into wheel bolt patterns, I quickly realized that understanding the difference between 6X5.5 and 6X139.7 is crucial for choosing the right wheels for my vehicle. Here’s what I learned along the way to help you make an informed decision.
Understanding Bolt Patterns: What Do 6X5.5 and 6X139.7 Mean?
To begin with, the numbers represent the bolt pattern specifications. The first number (6) indicates the number of lug nuts or bolts on the wheel. Both 6X5.5 and 6X139.7 have six lug holes.
The second part is the diameter of the circle that the lug nuts form, measured in inches for 6X5.5 and millimeters for 6X139.7. So:
- 6X5.5 means 6 lugs on a 5.5-inch diameter circle.
- 6X139.7 means 6 lugs on a 139.7 mm (which is roughly 5.5 inches) diameter circle.
At first glance, these might seem similar, but the difference in units and exact measurements can affect compatibility.
Unit Conversion: Are 6X5.5 and 6X139.7 the Same?
I had to double-check if 6X5.5 inches equals 6X139.7 mm. Converting 5.5 inches to millimeters:
5.5 inches × 25.4 mm/inch = 139.7 mm
So, yes, 6X5.5 and 6X139.7 are essentially the same bolt pattern expressed in different units. This means wheels labeled with either specification should fit the same bolt pattern.
Why Does This Matter When Buying Wheels?
Knowing that 6X5.5 and 6X139.7 are the same is a relief because sometimes manufacturers or sellers use different units. However, I always make sure to confirm the bolt pattern with the seller or wheel manufacturer to avoid mistakes.
Using the wrong bolt pattern can cause:
- Wheels not fitting onto the hub correctly
- Safety hazards due to improper mounting
- Damage to wheel studs or lug nuts
Other Important Fitment Factors to Consider
While bolt pattern is vital, I learned that other specs are just as important to get the perfect fit:
- Center Bore: The hole in the center of the wheel must match the hub size for proper centering.
- Offset and Backspacing: These affect how far the wheel sits inside or outside the wheel well.
- Wheel Diameter and Width: Make sure they fit your tires and vehicle clearance.
- Load Rating: Especially important for trucks and SUVs.
My Tips for Buying Wheels with 6X5.5 or 6X139.7 Bolt Pattern
- Always double-check bolt pattern compatibility, especially if converting between imperial and metric units.
- Verify the center bore size or use hub-centric rings if needed.
- Consider consulting your vehicle’s manual or a professional to confirm specifications.
- Don’t overlook offset and load capacity to ensure safety and performance.
- When in doubt, bring your current wheels or lug nuts to the store for comparison.
Final Thoughts
Understanding that 6X5.5 and 6X139.7 refer to the same bolt pattern helped me avoid confusion and choose the right wheels confidently. Always remember that bolt pattern is just one piece of the puzzle, and paying attention to all fitment details will ensure your wheels look great and perform safely on your vehicle.
Author Profile
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Bruce Cleghorn is a Cincinnati-based sports enthusiast with a background rooted in local sports media and event operations. Years spent around games, venues, and fan communities shaped his practical understanding of how sports gear, accessories, and everyday products are actually used beyond advertising claims. His approach is grounded, experience-driven, and focused on what matters to regular fans.
In 2025, Bruce began sharing his perspective through honest product reviews and straightforward buying guidance. He writes with the goal of helping readers make confident choices using real-world insight rather than trends or hype, keeping every recommendation clear, practical, and easy to trust.
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