The 2021 Chevrolet Trucks Silverado 1500 sits in the modern full-size pickup market with a wide spread of work, street, and off-road-oriented trims, so tire selection starts with matching the truck’s exact configuration rather than assuming one size fits every Silverado. This generation blends everyday utility with trim-specific wheel packages that can change both stance and ride character. For this model year, the Silverado 1500 uses several primary metric radial tire sizes across 17-, 18-, 20-, and 22-inch rims. That makes wheel diameter, trim level, and intended use central to the decision, especially when comparing a highway-oriented setup to an all-terrain option such as the BFGoodrich All-Terrain T/A KO2.
Which Tire Size Is Right for The 2021 Chevrolet Trucks Silverado 1500
The 2021 Chevrolet Trucks Silverado 1500 uses seven primary tire sizes, and the correct one depends on the truck’s exact sub-model and wheel package. These sizes are all radial, but they span four different rim diameters from 17 to 22 inches. Before choosing a tire, confirm the specific trim and the actual wheel diameter on the truck, since that determines which fitment path applies.
275/60R20 is a metric radial size in which 275 is the section width in millimeters, 60 is the aspect ratio, and 20 is the rim diameter in inches. On the 2021 Chevrolet Trucks Silverado 1500, this size is one of the larger factory-style fitments and is used on certain trims with 20-inch wheels. It represents a modern full-size truck tire format with a broad footprint and a substantial sidewall. This size is worth evaluating when the truck already carries 20-inch wheels and the goal is to stay with the correct diameter class for that setup.
265/60R20 is a metric radial size that uses a 265-millimeter section width, a 60-series profile, and a 20-inch rim. On the 2021 Chevrolet Trucks Silverado 1500, it appears on trims where a 20-inch wheel is paired with a slightly narrower tire than the 275-series alternatives. That distinction matters because similar-looking Silverado wheel packages do not automatically use the same tire dimensions. This size should be considered only after confirming the truck’s trim and wheel setup so the selected tire matches the intended 20-inch fitment.
275/65R18 is a metric radial size with a 275-millimeter section width, a 65-series profile, and an 18-inch rim diameter. On the 2021 Chevrolet Trucks Silverado 1500, this size appears on several trims and is also the size with an available BFGoodrich All-Terrain T/A KO2 option featuring raised white letters. That gives it a more truck-oriented product choice than some of the other listed fitments. It is a useful size to review when the truck runs 18-inch wheels and the owner wants to compare trim-correct fitment with an all-terrain-style replacement.
275/50R22 is a metric radial size in which 275 is the width in millimeters, 50 is the aspect ratio, and 22 is the wheel diameter in inches. On the 2021 Chevrolet Trucks Silverado 1500, this size is tied to trims equipped with 22-inch wheels, making wheel confirmation especially important before purchase. Its lower profile distinguishes it from the taller-sidewall 17-, 18-, and 20-inch Silverado fitments. This size is the right place to focus only when the truck already carries the correct 22-inch wheel package and clearance remains consistent with that setup.
255/70R17 is a metric radial size with a 255-millimeter section width, a 70-series profile, and a 17-inch rim diameter. On the 2021 Chevrolet Trucks Silverado 1500, it is one of the 17-inch fitments used on certain trims, particularly where a practical, taller-sidewall configuration is part of the truck’s setup. It differs meaningfully from the 265/70R17 and should not be treated as interchangeable simply because both mount on 17-inch wheels. This size is best evaluated after confirming the wheel package and the exact trim-level fitment on the truck.
265/65R18 is a metric radial size that combines a 265-millimeter section width with a 65-series aspect ratio on an 18-inch rim. On the 2021 Chevrolet Trucks Silverado 1500, it serves as an 18-inch fitment distinct from the wider 275/65R18 option, so width and overall setup both matter during selection. Even within the same wheel diameter, Silverado trims do not all use the same dimensions. This size deserves attention when the truck has 18-inch wheels and the goal is to match the original fitment path rather than moving to a wider alternative.
265/70R17 is a metric radial size with a 265-millimeter section width, a 70-series profile, and a 17-inch rim diameter. For the 2021 Chevrolet Trucks Silverado 1500, this size appears on several trims and also has available BFGoodrich All-Terrain T/A KO2 choices in raised white letter form, including different load-capacity versions. That makes it one of the more selection-sensitive sizes on this page even though the basic fitment is straightforward. It is the size to compare when the truck has 17-inch wheels and the owner wants a tire with an all-terrain product option.
2021 Chevrolet Trucks Silverado 1500 Sub-Model Tires
Tire fitment for the 2021 Chevrolet Trucks Silverado 1500 varies notably by sub-model, and several trims carry more than one primary size depending on wheel package. Checking the exact trim name and wheel diameter is the quickest way to narrow the correct tire before comparing product options.
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2021 Chevrolet Trucks Silverado 1500 Custom
The 2021 Chevrolet Trucks Silverado 1500 Custom uses a straightforward 20-inch radial tire fitment centered on 275/60R20. That makes selection more about confirming the truck still has its correct wheel setup and then choosing the right tire style within that size.
2021 Chevrolet Trucks Silverado 1500 Custom Trail Boss
The 2021 Chevrolet Trucks Silverado 1500 Custom Trail Boss can use either a 20-inch or 18-inch radial fitment, so trim name alone is not enough to finalize a tire choice. Wheel diameter needs to be confirmed first, especially before moving into an all-terrain replacement.
The 2021 Chevrolet Trucks Silverado 1500 High Country uses larger-wheel radial fitments, with both 20-inch and 22-inch size paths. Tire selection starts with confirming which wheel package is on the truck now, since the two sizes are not interchangeable just because they appear on the same trim family.
The 2021 Chevrolet Trucks Silverado 1500 LT has the widest fitment spread in this group, covering 17-, 18-, and 20-inch radial sizes. For an LT, the real first step is verifying the actual wheel diameter on the truck before comparing width, profile, or product style.
2021 Chevrolet Trucks Silverado 1500 LT Trail Boss
The 2021 Chevrolet Trucks Silverado 1500 LT Trail Boss uses either a 20-inch or 18-inch radial tire size depending on wheel setup. That means a tire search should begin with the mounted wheel diameter, then move to the specific size and any all-terrain-style product preference.
The 2021 Chevrolet Trucks Silverado 1500 LTZ follows a two-size pattern with 20-inch and 22-inch radial fitments. Choosing correctly depends on confirming which wheel package the truck carries, since the profile and diameter class change with the wheel size.
The 2021 Chevrolet Trucks Silverado 1500 RST uses multiple radial fitments across 18-, 20-, and 22-inch wheels. That makes wheel confirmation especially important before selecting a tire, even within the same trim, because the correct size changes with the wheel package.
The 2021 Chevrolet Trucks Silverado 1500 SSV uses several practical radial fitments across 17-inch and 18-inch wheel diameters. Tire choice should start with the truck’s current wheel size, then move to the exact size and any available all-terrain product differences.
The 2021 Chevrolet Trucks Silverado 1500 WT also spans multiple radial sizes on 17-inch and 18-inch wheels. For a Work Truck, matching the mounted wheel diameter is the key first step before comparing tire width, sidewall profile, and load-oriented product details.
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 2021 Chevrolet Trucks Silverado 1500 Tires for Sale
Available product choices center on 275/65R18 and 265/70R17, both in BFGoodrich All-Terrain T/A KO2 form with raised white letter sidewalls. These radial options can be compared by tire size, rim-width compatibility, and load-capacity specification within the truck’s correct fitment.
Silverado 1500 tire questions usually come down to the exact trim, actual wheel diameter, and whether the truck uses one of the 17-, 18-, 20-, or 22-inch radial fitments. The FAQs below focus on size identification, product selection, and the basic checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2021 Chevrolet Trucks Silverado 1500?
The 2021 Chevrolet Trucks Silverado 1500 uses seven primary tire sizes: 275/60R20, 265/60R20, 275/65R18, 275/50R22, 255/70R17, 265/65R18, and 265/70R17. All of them are radial sizes, but they do not apply across every trim in the same way.
The practical step is to identify the truck’s exact sub-model and confirm the wheel diameter already on the vehicle. A Silverado 1500 can use 17-, 18-, 20-, or 22-inch rims in this model year, so the right tire is tied to the specific trim and wheel package rather than the Silverado name alone.
What size rim does a 2021 Chevrolet Trucks Silverado 1500 use?
A 2021 Chevrolet Trucks Silverado 1500 can use 17-inch, 18-inch, 20-inch, or 22-inch rims depending on sub-model and tire size. The tire fitments on this page span all four diameters, so there is no single rim size for every Silverado 1500 configuration.
Checking the actual wheel on the truck is essential before selecting a tire, especially on trims that offered more than one fitment path. Even when two Silverado tires look close in overall size, the wrong rim diameter rules out the match immediately, so wheel measurement and sidewall verification should come first.
Why does the 2021 Chevrolet Trucks Silverado 1500 have more than one tire size?
The 2021 Chevrolet Trucks Silverado 1500 has more than one tire size because the model range includes multiple trims and wheel packages. Different versions of the truck use different rim diameters and tire profiles, from 17-inch fitments up through 22-inch applications.
That variation means tire selection is really a trim-and-wheel question, not just a year-make-model question. A Custom, High Country, WT, or Trail Boss can follow different fitment paths, so checking the door-jamb label, current tire sidewall, and actual wheel diameter helps narrow the correct size before comparing products.
Choosing the Right Tire
What should I consider when choosing a Silverado 1500 tire for a 2021 Chevrolet Trucks Silverado 1500?
Start with the exact tire size and wheel diameter already used by the truck’s trim. On a 2021 Chevrolet Trucks Silverado 1500, that means confirming whether the vehicle uses a 17-, 18-, 20-, or 22-inch setup before comparing tire width, aspect ratio, or product details.
After size is confirmed, compare the tire’s intended character and specifications that matter to your use. For the sizes with available BFGoodrich All-Terrain T/A KO2 options, useful factors include rim-width range, sidewall presentation, and load-capacity specification, especially if the truck sees hauling, rougher roads, or mixed on-road and off-road driving.
What sidewall styles are available for 2021 Chevrolet Trucks Silverado 1500 tires?
Among the available products for this 2021 Chevrolet Trucks Silverado 1500 fitment set, the visible sidewall style is RWL, or raised white letters. That sidewall treatment appears on the BFGoodrich All-Terrain T/A KO2 options offered in the supported 17-inch and 18-inch sizes.
Sidewall style affects appearance more than fitment, but it can still shape the overall look of the truck. Raised white letters give the Silverado a more traditional off-road and truck-oriented presentation, so buyers who want a cleaner or more subdued look should compare the exact product details within the correct size before deciding.
What tire series are available for the 2021 Chevrolet Trucks Silverado 1500?
The available products shown for this 2021 Chevrolet Trucks Silverado 1500 are in the BFGoodrich All-Terrain T/A KO2 series. That series appears in 275/65R18 and 265/70R17, both as radial truck tires with raised white letter sidewalls.
Series matters because it gives context to the tire’s character as well as its appearance. Once the truck’s correct size is confirmed, comparing the KO2 options by rim-width range and load-capacity version is the next step, particularly in 265/70R17 where more than one specification is available within the same basic size.
Restoration & Appearance
Which tire should I choose for a period-style 2021 Chevrolet Trucks Silverado 1500?
A period-style approach on a 2021 Chevrolet Trucks Silverado 1500 usually means staying with the truck’s original size format and wheel diameter rather than changing to a different fitment class. Since this is a modern truck, the visual starting point is still a metric radial matched to the correct 17-, 18-, 20-, or 22-inch wheel setup.
Appearance goals then come down to the look you want within the correct size. An all-terrain tire with raised white letters creates a more assertive truck presentation, while a different product style may look more restrained. When originality matters closely, compare against window-sticker, dealer, or owner-history documentation for the individual truck.
Does correct tire fitment matter for a 2021 Chevrolet Trucks Silverado 1500 restoration?
Correct tire fitment matters on a 2021 Chevrolet Trucks Silverado 1500 because the truck was offered with several different tire and wheel combinations. Using the right diameter class and proper size helps preserve the intended stance, wheel-to-tire proportion, and trim-specific look of the vehicle.
Fitment also affects practicality beyond appearance. A mismatch in rim diameter, width, or sidewall profile can complicate clearance and change how finished the truck looks. Even on a newer collector-oriented build, the safest visual path is to verify the exact trim, the current wheels, and the size already associated with that configuration.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2021 Chevrolet Trucks Silverado 1500?
Yes, modifications can affect tire fitment on a 2021 Chevrolet Trucks Silverado 1500 even when the tire size is correct for a stock trim. Changes such as aftermarket wheels, altered wheel offset, suspension lifts, lowering, or body modifications can influence how much room the tire has in motion.
That makes it important to check more than the sidewall size alone. A Silverado with changed wheels or suspension should be inspected for steering clearance, fender clearance, and wheel-width compatibility before a new tire is selected, especially when moving between different trim-style fitments that share the same general truck platform.
What should I inspect before driving a 2021 Chevrolet Trucks Silverado 1500 on new tires?
Before driving a 2021 Chevrolet Trucks Silverado 1500 on new tires, confirm that the size matches the truck’s wheel diameter and trim setup, then inspect inflation pressure, bead seating, lug-nut torque, and visible clearance at the fenders and suspension. The basic condition of the wheels should also be checked.
A short, careful road test is a smart follow-up. Watch for rubbing at full steering lock, vibration, pull, or uneven behavior that could point to a wheel, alignment, or installation issue. On a truck with multiple possible factory fitments, these checks help confirm that the selected tire matches the actual setup on the vehicle.
How often should tires on a 2021 Chevrolet Trucks Silverado 1500 be inspected?
Tires on a 2021 Chevrolet Trucks Silverado 1500 should be inspected regularly, not just when tread looks worn. Routine checks should include pressure, tread condition, cuts, punctures, sidewall damage, and any signs of uneven wear that could indicate alignment or suspension issues.
Inspection is especially important on a truck that tows, carries cargo, or sees rougher road use. Looking over the tires before longer trips and between service intervals helps catch problems early. For sizes such as 265/70R17 and 275/65R18 with specific load-capacity versions, maintaining the tire in good condition is just as important as choosing the right size.
