Many GMC vehicles have a 6x5.5 or 6x4.72, but you’ll need to know the exact measurements of your GMC’s wheels if you plan on switching out the rims for a new set.
It might not be a common occurrence for most GMC owners, but a damaged rim can just as easily come from city driving as it can from off-roading—in which case you’ll need to know your vehicle’s lug pattern if you ever need to replace a wheel.
Fortunately for you, the driver's choice car insurance
savings app Jerry
has put together this guide detailing everything you need to know about your GMC’s lug pattern and the associated measurements—we’ll even show you the fastest way to save more on your GMC insurance cost
. Why you should know your GMC’s lug pattern
When we refer to a vehicle’s lug—or bolt—pattern, we’re talking about the number and spacing of lug holes on your GMC’s wheels. This pattern is made up of two numbers: the first being the number of lug holes, while the second indicates the diameter of the imaginary circle formed by those bolt holes.
In practice, this means a wheel with a 5x5 lug pattern will have 5 evenly-spaced bolts arranged in a 5-inch circle.
If you ever need to switch out your wheels due to damage or normal wear and tear—or just because you feel like it—you’ll need to know your GMC’s lug pattern before doing so.
GMC lug pattern guide
In the table below, you’ll find the wheel specifications for GMC’s most popular models. It includes the wheel size, lug pattern, offset, stud-size, and hub/center bore measurements. So if you’re looking to replace your rims, find your GMC model to figure out the wheels you’ll need.
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1999-2006 GMC Sierra 1500 | | | | | |
2007-2013 GMC Sierra 1500 | | | | | |
2014-2017 GMC Sierra 1500 | | | | | |
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2019-2020 GMC Sierra 1500 | | | | | |
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2007-2014 GMC Sierra 2500HD | | | | | |
2015-2020 GMC Sierra 2500HD | | | | | |
2021-2022 GMC Sierra 2500HD | | | | | |
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4.7/5 rating on the App Store | Trusted by 5+ million customers and 7 million cars 4.7/5 app rating | Trusted by 5M+ drivers The basics of lug pattern terminology
Making sense of that table may seem incredibly daunting if you’ve never dealt with GMC rims before. But, in reality, those numbers are fairly simple to understand—once you become familiar with a few key terms.
Lug pattern: Sometimes called a bolt pattern, this figure shows the number of lug holes and the diameter of the circle they form. Knowing this pattern will make finding a wheel that fits your GMC much easier.
OEM wheel size: This simply refers to the diameter of your GMC’s original wheels, as OEM stands for “Original Equipment Manufacturer.” You’ll need to know this measurement should you ever need—or want—to install new rims.
Offset: A wheel’s offset refers to the distance from the mounting surface to the center of the rim. If the offset is positive, it means the wheels are being pulled in towards the car, whereas a negative offset means the wheels will stick out. Most GMC vehicles have a…
Stud size: Generally speaking, stud sizes are written in two different ways. In the U.S., fasteners are expressed as stud diameter x threads per inch(e.g. 1/2x18), while fasteners in countries using the metric system are written as stud diameter x distance between threads (e.g. 15mm x 1.50).
Center bore: Your wheel’s center bore is the opening that centers it on the wheel hub. This hole often varies in size, so it’s important to know the exact measurement.
How to measure your GMC’s lug pattern
Of course, you may own a GMC not included in the table above. In this case, you’ll need to measure the lug pattern yourself—you can achieve this with either a ruler or measuring tape.
You’ll first want to count the number of lugs—most GMCs will have six, but some have five or even eight. Then you’ll need to find the diameter of the bolt pattern.
Place the end of your ruler or measuring tape along the outer edge of any lug hole and measure directly across the circle so it lines up with the opposite hole. Of course, if your GMC only has five, you’ll end up between holes, in which case you’ll need to measure to the center of the nearest hole. Now you have the diameter!
In practice, this would mean that if you counted six bolt holes and came up with a diameter of 5.5 inches, your GMC’s lug pattern would be 6x5.5.
How to find affordable GMC insurance
Now that you know your GMC’s lug pattern, buying new rims will be a breeze—but new rims can be expensive, especially if your insurance won’t cover the costs. Fortunately, top-rated car insurance
app Jerry
can help put money back into your pocket for those costly vehicle-related expenses. In fact, Jerry users save on average $800+ a year on their car insurance, giving you enough for a full set of new rims!
All you have to do is download the app, fill out a short survey, and in 45-seconds, Jerry will have compared dozens of affordable quotes from the nation’s top insurance providers and found you the best deals possible.
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