The 2010 GMC Trucks Sierra 1500 sits in the full-size pickup market as a truck built to cover a wide spread of uses, from straightforward work duty to upscale trims and package-driven configurations. That variety matters when it comes to tires, because this Sierra 1500 uses four different radial sizes depending on sub-model and wheel setup: 245/70R17, 265/70R17, 265/65R18, and 275/55R20. The main decision is not simply choosing a tire, but confirming the exact trim, package, and rim diameter first. Once that is settled, selection becomes more focused around truck-oriented radial options, sidewall presentation, and whether the truck is being kept stock or has had wheel or suspension changes.
Which Tire Size Is Right for The 2010 GMC Trucks Sierra 1500
The 2010 GMC Trucks Sierra 1500 uses four primary tire sizes, and the right one depends on the exact sub-model, package, and wheel diameter. This is a radial-fitment truck throughout, but it spans 17-inch, 18-inch, and 20-inch rims. Before comparing tires, confirm whether the truck is a Denali, Hybrid, WT, SLE, SLT, XFE, or a package-equipped version, then verify the wheel size actually on the truck today.
Fit(s): Denali, SLE (20 Inch Option), SLE w/Max Trailer Pkg., SLT (20 Inch Option), SLT w/Max Trailer Pkg., and XFE
Construction: Radial|Rim: 20 in
275/55R20 is a metric radial size in which 275 identifies the nominal section width in millimeters, 55 is the aspect ratio, R indicates radial construction, and 20 is the rim diameter in inches. On the 2010 GMC Trucks Sierra 1500, this size is tied to 20-inch-wheel configurations such as Denali and certain optioned SLE, SLT, and XFE applications. Its lower-profile look changes the truck's visual stance compared with the 17-inch and 18-inch fitments. This size should be chosen only after confirming that the truck's current wheels and sub-model match a 20-inch setup.
Fit(s): Hybrid, SLE w/Z71 Pkg., and SLT w/Z71 Pkg.
Construction: Radial|Rim: 18 in
265/65R18 is a metric radial size that combines a 265-millimeter nominal section width with a 65-series profile on an 18-inch rim. For the 2010 GMC Trucks Sierra 1500, it appears on the Hybrid and certain Z71-package SLE and SLT configurations, making it a package-specific fitment rather than a universal Sierra size. This format balances a substantial sidewall with an 18-inch wheel and sits between the 17-inch and 20-inch combinations used elsewhere in the lineup. It is the right place to focus only when the truck is confirmed to be one of those 18-inch-equipped versions.
245/70R17 is a metric radial size with a 245-millimeter nominal section width, a 70-series aspect ratio, and a 17-inch rim diameter. On the 2010 GMC Trucks Sierra 1500, this size is used on several 17-inch-wheel configurations including SL 4x2, WT 4x2, and some SLE, SLT, WT 4x4, and XFE applications. Available product coverage in this size includes a BFGoodrich All-Terrain T/A KO2 with raised white letter sidewalls, adding a more aggressive truck-style appearance. This size makes sense for owners who have a 17-inch setup and want to stay aligned with the narrower of the two primary 17-inch Sierra fitments.
265/70R17 is a metric radial size in which 265 denotes the nominal section width in millimeters, 70 is the aspect ratio, and 17 is the wheel diameter. Within the 2010 GMC Trucks Sierra 1500 range, it serves many 17-inch applications including SL 4x4, various SLE and SLT trims, Max Trailer Package versions, Z71-related configurations, and some WT 4x4 setups. BFGoodrich All-Terrain T/A KO2 choices are available here, both with raised white letter sidewalls and differing load capacities. This size is worth careful attention because many Sierra sub-models use it, but several others use a different 17-inch, 18-inch, or 20-inch fitment instead.
Tire fitment on the 2010 GMC Trucks Sierra 1500 is not one-size-fits-all. Several sub-models use only one tire size, while others can use more than one depending on package and wheel configuration, so checking the exact sub-model and rim diameter matters before choosing a replacement.
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2010 GMC Trucks Sierra 1500 Denali
The Denali uses the 275/55R20 radial size, making it one of the Sierra 1500 configurations tied to a 20-inch wheel setup. Tire selection here starts with confirming that the truck still carries its 20-inch wheels rather than a later wheel change.
The Hybrid uses 265/65R18 radial tires on an 18-inch rim. That keeps tire selection focused on the 18-inch fitment rather than the 17-inch and 20-inch sizes used elsewhere in the Sierra 1500 range.
The SL 4x2 uses the 245/70R17 radial size. That makes replacement straightforward as long as the truck still has its correct 17-inch wheel setup and has not been changed to a different wheel-and-tire package.
The SL 4x4 uses 265/70R17 radial tires. This points the owner toward the wider 17-inch Sierra fitment, so it is worth confirming wheel width and any suspension changes before comparing available tires.
This SLE configuration uses the 275/55R20 radial size because it carries the 20-inch wheel option. Tire selection should stay centered on that 20-inch fitment unless the truck has been converted to another wheel diameter.
The SLE 4x2 can use either 245/70R17 or 265/70R17, both in radial construction. For this sub-model, the first step is confirming which 17-inch wheel-and-tire package is actually on the truck before choosing a replacement.
The SLE 4x4 can be fitted with either 245/70R17 or 265/70R17 radial tires. Tire choice depends on verifying the current 17-inch setup, since the two sizes are not interchangeable without checking wheel compatibility and clearance.
2010 GMC Trucks Sierra 1500 SLE w/Max Trailer Pkg.
This SLE Max Trailer Package configuration uses either 265/70R17 or 275/55R20 radial tires. The tire decision begins with confirming whether the truck is on the 17-inch or 20-inch setup, because rim diameter drives the correct replacement path.
The SLE with Z71 Package can use 265/65R18 or 265/70R17 radial tires. That means package identification alone is not enough; the actual wheel diameter on the truck needs to be checked before selecting a tire.
This SLT configuration uses the 275/55R20 radial size with a 20-inch rim. Owners shopping this sub-model should focus on 20-inch fitment first and verify that the wheel package has not been changed over time.
The SLT 4x2 can use either 245/70R17 or 265/70R17 radial tires. Because both are 17-inch sizes, the practical difference comes down to confirming the exact wheel-and-tire package rather than assuming every SLT 4x2 uses the same replacement size.
The SLT 4x4 also uses either 245/70R17 or 265/70R17 radials, depending on configuration. That makes wheel and existing tire verification especially important before ordering, even though both choices share the same 17-inch rim diameter.
2010 GMC Trucks Sierra 1500 SLT w/Max Trailer Pkg.
This SLT Max Trailer Package version can use 265/70R17 or 275/55R20 radial tires. The key selection step is determining whether the truck has the 17-inch or 20-inch setup, since that changes the entire tire category.
The SLT with Z71 Package uses either 265/65R18 or 265/70R17 radial tires. Owners should verify the wheel diameter before moving further, because this sub-model spans both 18-inch and 17-inch fitment paths.
The WT 4x2 uses the 245/70R17 radial size. That keeps replacement relatively simple, with the main practical check being whether the truck still wears the original-style 17-inch wheel diameter.
The WT 4x4 can use either 245/70R17 or 265/70R17 radial tires. Choosing correctly means confirming which 17-inch configuration is on the truck now rather than relying only on the WT 4x4 label.
The XFE can use either 245/70R17 or 275/55R20, spanning both 17-inch and 20-inch wheel setups. That makes rim-diameter confirmation the most important first step before comparing tire options for this sub-model.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2010 GMC Trucks Sierra 1500 Tires for Sale
Available product choices for the 2010 GMC Trucks Sierra 1500 currently center on 17-inch applications, with BFGoodrich All-Terrain T/A KO2 options in 245/70R17 and 265/70R17. The visible differences are load specification, rim-width range, tire weight, and raised white letter sidewall styling.
These 2010 GMC Trucks Sierra 1500 tire FAQs focus on the questions that matter most on this truck: which size fits which sub-model, how the 17-inch, 18-inch, and 20-inch setups differ, and what to inspect before putting the truck back on the road.
Tire Size & Fitment
What tire size fits a 2010 GMC Trucks Sierra 1500?
The 2010 GMC Trucks Sierra 1500 uses four primary tire sizes: 245/70R17, 265/70R17, 265/65R18, and 275/55R20. All four are radial sizes, and the correct one depends on the exact sub-model, package, and wheel diameter rather than the Sierra 1500 name alone.
The first check should be the truck's current wheel size and trim configuration. A Denali uses 275/55R20, a Hybrid uses 265/65R18, and many WT, SLE, and SLT versions use one of the 17-inch sizes. If the truck has had wheel, suspension, or package-related changes over time, verify the actual setup on the vehicle before selecting a replacement tire.
What size rim does a 2010 GMC Trucks Sierra 1500 use?
A 2010 GMC Trucks Sierra 1500 can use 17-inch, 18-inch, or 20-inch rims depending on the sub-model and wheel package. The 245/70R17 and 265/70R17 sizes are 17-inch fitments, 265/65R18 is an 18-inch fitment, and 275/55R20 is a 20-inch fitment.
That makes rim diameter one of the most important parts of the tire decision on this truck. Two Sierra 1500s from the same model year may look similar but require different tires because of different wheel packages. Before comparing tread styles or load specifications, check the wheel diameter stamped on the tire sidewall and confirm it matches the wheel currently installed.
Why does the 2010 GMC Trucks Sierra 1500 have more than one tire size?
The Sierra 1500 was offered in many trims and package combinations, so tire size varies with the truck's equipment. Denali, Hybrid, WT, SLE, SLT, XFE, Max Trailer Package, Z71 Package, and 20-inch optioned versions do not all share the same wheel-and-tire setup.
Some variations stay within the same 17-inch rim diameter but use different widths and profiles, while others move to 18-inch or 20-inch wheels. That is why trim name alone is sometimes not enough, especially on SLE, SLT, WT, and XFE applications. The safest approach is to confirm the sub-model and read the current tire size on the truck before choosing a replacement.
Choosing the Right Tire
What should I consider when choosing a tire for a 2010 GMC Trucks Sierra 1500?
Start with the correct size for the truck's exact configuration: 245/70R17, 265/70R17, 265/65R18, or 275/55R20. After size is confirmed, compare construction type, intended use, rim compatibility, and load specification. On the visible product range for this Sierra, the available choices are radial truck tires.
A Sierra used for light highway duty may call for a different tire character than one that sees rougher roads or trailer-related use. Wheel diameter and width matter just as much as the sidewall size code, especially on trims that could be equipped several ways. Matching the tire to how the truck is actually used leads to a better selection than choosing by appearance alone.
What sidewall styles are available for 2010 GMC Trucks Sierra 1500 tires?
Among the currently visible product choices for this 2010 GMC Trucks Sierra 1500, the sidewall style shown is RWL, or raised white letter. That appears on BFGoodrich All-Terrain T/A KO2 offerings in both 245/70R17 and 265/70R17, giving those 17-inch applications a more traditional truck-performance look.
Sidewall treatment changes the truck's appearance even when the size stays the same. Raised white letters tend to suit owners who want a more assertive period truck presentation, while other buyers may prefer a more understated look if additional options are available in their size. Appearance should still come after confirming the correct tire size, wheel diameter, and load needs for the truck.
What brands offer tires for the 2010 GMC Trucks Sierra 1500?
The currently visible product selection for this 2010 GMC Trucks Sierra 1500 includes BFGoodrich. In the available 17-inch fitments, BFGoodrich appears through the All-Terrain T/A KO2 line in both 245/70R17 and 265/70R17, with more than one load specification offered in 265/70R17.
Brand matters less than getting the truck's size and wheel setup right first. Once the correct size is confirmed, compare the available tire series, sidewall style, load capacity, and rim-width requirements within that size. On a truck with multiple possible factory-style tire sizes, choosing the right fitment is always more important than selecting a brand name in isolation.
Restoration & Appearance
Does correct tire fitment matter for a 2010 GMC Trucks Sierra 1500 restoration?
Yes, correct tire fitment matters because the 2010 GMC Trucks Sierra 1500 was offered with several different wheel-and-tire combinations. A restoration-minded truck should match its trim and wheel package closely, whether that means 245/70R17, 265/70R17, 265/65R18, or 275/55R20.
Getting the size right helps preserve the truck's intended stance and overall presentation. It also keeps the restoration from drifting into a generic replacement approach that ignores trim-specific details. When exact originality is important, compare the truck's current wheels and equipment to vehicle-specific references or marque guidance before choosing a tire based mainly on appearance.
Which tire should I choose for a period-style 2010 GMC Trucks Sierra 1500?
A period-style choice starts with the tire size that belongs on the truck's exact sub-model and wheel package. For the visible 17-inch options on this Sierra 1500, BFGoodrich All-Terrain T/A KO2 tires with raised white letters create a traditional truck-oriented look without changing the underlying radial construction.
The appearance goal should follow the original size, not replace it. A Denali on 20-inch wheels and a WT on 17-inch wheels need different visual approaches because they use different tire dimensions. If the truck has been modified since new, decide whether the goal is stock-style presentation or a later custom look before narrowing the tire choice.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2010 GMC Trucks Sierra 1500?
Yes, modifications can change tire fitment on a 2010 GMC Trucks Sierra 1500. Aftermarket wheels, altered offsets, suspension lifts, lowering changes, or body modifications can all affect which tire size works cleanly, even if the truck originally used one of the four stock radial sizes.
A Sierra that has been changed from its original setup should be checked for wheel diameter, wheel width, and clearance at steering lock and suspension travel. That matters most on trims that already had multiple possible tire sizes from the factory. Replacement shopping should begin with the truck as it sits today, not only with the trim name on the badge.
What should I inspect before driving a 2010 GMC Trucks Sierra 1500 on new tires?
Before road use, inspect the wheels for damage, confirm the tire size matches the truck's actual setup, and make sure inflation pressure is set appropriately for the tire and use. It is also worth checking lug torque, valve stems, tread direction where applicable, and basic clearance to suspension and body components.
The rest of the truck deserves attention too, especially on a used pickup that may have seen work or towing. Look over shocks, steering components, alignment condition, and any uneven tire wear patterns that could return quickly on new tires. A fresh set of tires performs best when the Sierra's wheel and suspension condition supports the new installation.
How often should tires on a 2010 GMC Trucks Sierra 1500 be inspected?
Tires on a 2010 GMC Trucks Sierra 1500 should be inspected regularly rather than waiting for a problem to appear. A quick visual check before longer drives is smart, and a closer inspection for tread wear, cracking, punctures, bulges, and air loss should be part of routine maintenance throughout the year.
This matters even more on a truck that is driven infrequently, stored for long periods, or used seasonally. Low-use vehicles can age out tires before they wear them out, and trucks with towing or package-specific wheel setups deserve extra attention to condition and pressure. Consistent inspections help catch fitment or wear issues early, before they become road-use problems.
