The 2019 GMC Trucks Sierra 1500 Limited sits at an interesting point in full-size truck history, carrying familiar Sierra styling and capability in a model year that overlapped a major generational change. Buyers looking at one today are often balancing everyday truck use with the need to keep factory-style proportions and wheel fitment in line. This Sierra 1500 Limited uses radial tire fitments across several metric sizes, with tire choice varying by sub-model and wheel package. That makes wheel diameter the first checkpoint, followed by size, load specification, and intended use. For a stock-looking truck or a more utility-focused setup, getting the exact size right matters before comparing tread and sidewall details.
Which Tire Size Is Right for The 2019 GMC Trucks Sierra 1500 Limited
The 2019 GMC Trucks Sierra 1500 Limited uses five primary tire sizes, and they are tied to different sub-models and wheel diameters. Before choosing a tire, confirm the exact sub-model and the truck's current wheel diameter, because this Sierra can use 17-inch, 18-inch, 20-inch, or 22-inch rims depending on configuration. Once that is settled, the decision shifts to matching the correct metric radial size and comparing the available tire choices within it.
255/70R17 is a metric radial size in which 255 refers to nominal section width in millimeters, 70 is the aspect ratio, R identifies radial construction, and 17 is the wheel diameter in inches. On the 2019 GMC Trucks Sierra 1500 Limited, this size is one of the 17-inch fitments used on certain configurations rather than every truck in the range. It keeps the buyer in a modern light-truck sizing format that is familiar and easy to compare against wheel and suspension setup. This size is worth evaluating when the truck retains its 17-inch wheel package and the goal is staying with the proper overall fitment category.
265/70R17 is a metric radial size that uses a 265-millimeter nominal section width, a 70-series profile, and a 17-inch rim diameter. For the 2019 GMC Trucks Sierra 1500 Limited, it is a primary 17-inch fitment and the available product choices in this size include BFGoodrich All-Terrain T/A KO2 options with raised white letter sidewalls. Those products also differ in load specification, weight, and rim-width compatibility details. This size deserves a closer look when the truck has 17-inch wheels and the buyer wants to compare utility-oriented tire choices rather than simply confirm the fitment.
275/55R20 is a metric radial size where 275 is the nominal width in millimeters, 55 is the aspect ratio, R denotes radial construction, and 20 indicates the wheel diameter in inches. On the 2019 GMC Trucks Sierra 1500 Limited, this size appears across more than one sub-model, making it an important fitment for trucks equipped with 20-inch wheels. Its role is distinct from the 17-inch, 18-inch, and 22-inch options because the wheel diameter changes with it. Buyers considering this size should confirm that the truck still carries its intended 20-inch wheel setup before comparing replacement tires.
265/65R18 is a metric radial size with a 265-millimeter nominal width, a 65-series profile, and an 18-inch rim diameter. For the 2019 GMC Trucks Sierra 1500 Limited, it serves as one of the model-specific primary fitments rather than a universal size across the lineup. That makes it especially important not to substitute it casually with a nearby 17-inch or 20-inch fitment just because the overall proportions seem similar at a glance. This size should be considered when the truck is equipped with its 18-inch wheels and the goal is preserving the intended wheel-and-tire relationship.
285/45R22 is a metric radial size in which 285 gives the nominal section width in millimeters, 45 is the aspect ratio, R marks radial construction, and 22 is the wheel diameter in inches. On the 2019 GMC Trucks Sierra 1500 Limited, this is the largest-diameter wheel fitment in the group and applies only to certain configurations. Its lower-profile format sets it apart from the taller-sidewall 17-inch and 18-inch sizes used elsewhere in the Sierra 1500 Limited range. This size should be chosen only after confirming that the truck actually uses 22-inch wheels and has not been changed from its original wheel package.
2019 GMC Trucks Sierra 1500 Limited Sub-Model Tires
Sub-model fitment matters on the 2019 GMC Trucks Sierra 1500 Limited because tire size changes with the wheel package and trim. Confirming whether the truck is a Base, Elevation Edition, or SLE is the quickest way to narrow the correct tire size before comparing specific replacements.
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2019 GMC Trucks Sierra 1500 Limited Base
The 2019 GMC Trucks Sierra 1500 Limited Base can use 17-inch or 20-inch radial tire fitments, so the exact wheel setup matters before selecting a replacement. Once the wheel diameter is confirmed, the focus becomes choosing the correct metric size rather than assuming every Base truck used the same tire.
2019 GMC Trucks Sierra 1500 Limited Elevation Edition
The 2019 GMC Trucks Sierra 1500 Limited Elevation Edition uses the 275/55R20 radial size, which makes fitment more straightforward than on trims with multiple wheel packages. Tire selection then comes down to staying with the correct 20-inch size and checking that the truck still has its intended wheels.
The 2019 GMC Trucks Sierra 1500 Limited SLE has the widest fitment spread in the group, covering 17-inch, 18-inch, 20-inch, and 22-inch radial sizes. That means the SLE badge alone is not enough for tire selection, and the wheel diameter should be verified before comparing size-specific options.
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 2019 GMC Trucks Sierra 1500 Limited Tires for Sale
Available product choices for the 2019 GMC Trucks Sierra 1500 Limited are currently centered on 265/70R17, where BFGoodrich All-Terrain T/A KO2 options can be compared by load specification, raised white letter sidewall presentation, weight, and rim-width range.
Owners of a 2019 GMC Trucks Sierra 1500 Limited usually need clarity on exact tire size by sub-model, wheel diameter, available 265/70R17 product choices, and the fitment checks that matter before regular road use or changes to wheels and suspension.
Tire Size & Fitment
What tire size fits a 2019 GMC Trucks Sierra 1500 Limited?
The 2019 GMC Trucks Sierra 1500 Limited uses five primary radial tire sizes: 255/70R17, 265/70R17, 275/55R20, 265/65R18, and 285/45R22. The correct one depends on the truck's sub-model and wheel package, so there is not one universal size that applies to every Sierra 1500 Limited.
A quick check of the current wheel diameter usually narrows the answer immediately, since these sizes span 17-inch, 18-inch, 20-inch, and 22-inch rims. It is also wise to confirm the truck has not been changed with aftermarket wheels or a trim-based wheel swap, because that can affect which of these primary sizes is actually on the vehicle now.
What size rim does a 2019 GMC Trucks Sierra 1500 Limited use?
The 2019 GMC Trucks Sierra 1500 Limited can use four rim diameters depending on configuration: 17-inch, 18-inch, 20-inch, and 22-inch. Those rim diameters correspond to the primary tire sizes used across the Base, Elevation Edition, and SLE versions of the truck.
Rim diameter is the first thing to confirm before shopping because a metric tire size can look similar on paper while requiring a completely different wheel. Checking the size stamped on the tire sidewall, measuring the wheel if needed, and confirming the truck's actual setup helps prevent comparing 17-inch, 20-inch, or 22-inch tires that are not even in the same fitment group.
Do all 2019 GMC Trucks Sierra 1500 Limited sub-models use the same tire size?
No. The 2019 GMC Trucks Sierra 1500 Limited changes tire size by sub-model and wheel package. The Elevation Edition uses 275/55R20, while the Base and SLE can use multiple sizes depending on how the truck is equipped.
That variation means the sub-model badge is helpful, but wheel diameter still needs to be verified before a final tire choice is made. On a used truck, especially one that may have had take-off wheels, dealer-installed accessories, or aftermarket changes, the safest approach is matching the sub-model with the actual wheel and tire setup currently on the vehicle.
Choosing the Right Tire
What should I consider when choosing a 265/70R17 tire for a 2019 GMC Trucks Sierra 1500 Limited?
Start with the basics: the truck must actually use the 265/70R17 size on a 17-inch wheel. Within that size, available choices include BFGoodrich All-Terrain T/A KO2 tires, and the differences worth comparing include load specification, rim-width range, weight, and overall tire character rather than size alone.
A buyer using the truck for regular road miles, light utility work, or a more aggressive all-terrain look may prioritize those details differently. It also helps to compare the exact sidewall presentation and the load figure at its stated pressure so the chosen tire suits the wheel, the truck's intended use, and the setup already on the vehicle.
What sidewall styles are available for 2019 GMC Trucks Sierra 1500 Limited tires?
Among the currently available product choices for this Sierra 1500 Limited, the visible sidewall style is RWL, or raised white letter, on the 265/70R17 BFGoodrich All-Terrain T/A KO2 options. That gives the tire a more assertive truck-oriented appearance than a plain blackwall presentation.
Sidewall style affects appearance first, but it should still be treated as a secondary decision after confirming the correct size and wheel diameter. Raised white letter tires can suit a truck with a more utility-focused or period-truck visual theme, while buyers aiming for a different look should make sure they are comparing options within the correct Sierra 1500 Limited fitment.
What brands offer tires for the 2019 GMC Trucks Sierra 1500 Limited?
Current product coverage for this 2019 GMC Trucks Sierra 1500 Limited includes BFGoodrich in 265/70R17, specifically within the All-Terrain T/A KO2 series. That means brand comparison is limited at the moment, and the more useful comparison is between the available BFGoodrich versions in that exact size.
Even when one brand is the focus, there is still value in comparing the details that affect fitment and use. Load specification, rim-width compatibility, sidewall presentation, and tire weight can all shape the final decision, particularly on a truck that may see different duty from one owner to the next.
Restoration & Appearance
Does correct tire fitment matter for a 2019 GMC Trucks Sierra 1500 Limited restoration?
Yes. Even on a modern full-size truck like the 2019 GMC Trucks Sierra 1500 Limited, correct tire fitment plays a major role in preserving the truck's intended stance, wheel-to-tire proportion, and trim-specific appearance. Using the wrong diameter or profile can change the visual balance noticeably.
A restoration-minded owner should begin by confirming the exact sub-model and wheel package before focusing on tread style or sidewall treatment. If originality is especially important, factory literature, window-sticker records, and marque-specific references can help confirm how a particular truck was equipped before selecting a replacement tire that matches the right fitment category.
Which sidewall style suits a period-style 2019 GMC Trucks Sierra 1500 Limited?
For the currently available 265/70R17 options, raised white letter sidewalls suit a period-style 2019 GMC Trucks Sierra 1500 Limited well if the goal is a more traditional truck presentation. RWL gives the tire a more visible, utility-oriented look than a quieter contemporary sidewall treatment.
Appearance should still follow fitment, not the other way around. A sidewall style only works visually when it is paired with the correct Sierra 1500 Limited tire size and wheel diameter, so it makes sense to settle the sub-model and wheel package first, then choose the sidewall treatment that best matches the truck's intended character.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 GMC Trucks Sierra 1500 Limited?
Yes. Wheel changes, leveling kits, lowered suspension, spacer use, and other modifications can all affect tire fitment on a 2019 GMC Trucks Sierra 1500 Limited. Even when the truck started with one of the primary sizes, later changes can alter clearance at the fenders, suspension, or steering components.
That matters most on a truck with multiple factory wheel diameters, because an owner may assume the current setup is still stock when it is not. A careful look at actual wheel diameter and width, plus a visual check at full steering lock and through suspension travel, helps prevent buying the right tire size for the wrong vehicle setup.
What should I inspect before driving a 2019 GMC Trucks Sierra 1500 Limited on new tires?
Before regular road use, inspect air pressure, bead seating, lug torque, valve stems, tread and sidewall condition, and any signs of rubbing once the new tires are mounted. On a 2019 GMC Trucks Sierra 1500 Limited, it is also smart to confirm the installed size matches the truck's actual wheel diameter and intended fitment.
A short initial drive followed by a second inspection can catch issues that are easy to miss on the lift, such as light interference during turning or suspension movement. Paying attention to vibration, pull, and uneven clearance early helps protect both the new tires and the truck's wheels, steering parts, and body edges.
How often should tires on a 2019 GMC Trucks Sierra 1500 Limited be inspected?
Tires on a 2019 GMC Trucks Sierra 1500 Limited should be inspected regularly, not just at replacement time. Pressure, tread wear, sidewall condition, and signs of impact damage deserve routine attention, especially on a truck that may alternate between commuting, towing, rough roads, or long idle periods.
Monthly checks are a practical habit, with an extra inspection before longer trips or after any hard pothole or curb impact. Uneven wear can also reveal alignment issues or suspension problems, so catching those patterns early is just as important as watching the tire itself. A truck with larger wheel packages benefits from especially close visual inspection.
