The 2021 Chevrolet Trucks Traverse sits in the modern three-row crossover class, blending family-hauling space with the road manners buyers expect from a contemporary Chevrolet utility vehicle. For owners, the tire decision is less about vintage-style construction and more about matching the exact wheel setup fitted to the Traverse trim. This model uses radial tires in two primary sizes, 255/65R18 and 255/55R20, with fitment changing by sub-model. That makes wheel diameter and trim identification the first step before comparing tire choices. Once that is settled, the focus shifts to maintaining the right stance, preserving intended road manners, and checking clearance on any Traverse that has seen wheel or suspension changes.
Which Tire Size Is Right for The 2021 Chevrolet Trucks Traverse
The 2021 Chevrolet Trucks Traverse uses two primary tire sizes, and the correct one depends on the exact sub-model and wheel diameter. Both are radial metric sizes, but one fits an 18-inch rim and the other fits a 20-inch rim, so confirming the Traverse trim and actual wheel setup comes first. Once that is clear, the decision becomes choosing the right tire within the proper size for the vehicle's intended use and appearance.
Fit(s): High Country, LS, LT, Premier, Premier Redline Edition, and RS
Construction: Radial|Rim: 20 in
255/55R20 is a metric radial size in which 255 identifies the section width in millimeters, 55 is the aspect ratio, R indicates radial construction, and 20 is the wheel diameter in inches. On the 2021 Chevrolet Trucks Traverse, this size belongs to 20-inch wheel applications and is used on several upper trims, with some LS and LT configurations using it as well. Its dimensions place it very close in overall diameter to the 18-inch fitment, but it remains a different wheel-and-tire package. This is the size to evaluate when the Traverse is equipped with factory-style 20-inch wheels or another confirmed 20-inch setup.
255/65R18 is a metric radial size where 255 is the nominal section width in millimeters, 65 is the aspect ratio, R marks radial construction, and 18 is the rim diameter in inches. For the 2021 Chevrolet Trucks Traverse, this size applies to 18-inch wheel configurations, including the L sub-model and certain LS and LT setups. Although its overall diameter is nearly the same as the 20-inch fitment, it is not interchangeable without the matching wheel diameter. This size should be the starting point whenever the vehicle is still on 18-inch wheels or the wheel diameter has been confirmed directly.
Tire fitment on the 2021 Chevrolet Trucks Traverse varies by sub-model, and some trims can use either of the two primary sizes depending on wheel package. Checking the exact trim and the actual wheel diameter matters before comparing tires, because the Traverse uses both 18-inch and 20-inch setups.
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2021 Chevrolet Trucks Traverse High Country
The 2021 Chevrolet Trucks Traverse High Country uses the 255/55R20 radial size. Tire selection for this trim starts with the 20-inch wheel package, then moves to choosing a tire that matches the vehicle's intended road use and any confirmed wheel changes.
The 2021 Chevrolet Trucks Traverse L uses the 255/65R18 radial size. For this sub-model, the key is staying with the correct 18-inch fitment unless the vehicle has been re-equipped with different wheels that have already been verified.
The 2021 Chevrolet Trucks Traverse LS can use either 255/65R18 or 255/55R20 depending on the wheel setup. That makes wheel confirmation especially important before choosing a replacement tire, since both sizes are correct only in the right LS configuration.
The 2021 Chevrolet Trucks Traverse LT also appears with either 255/65R18 or 255/55R20 radial tires. Tire choice on an LT begins with identifying whether the vehicle has the 18-inch or 20-inch package, then selecting within that size rather than crossing between them casually.
The 2021 Chevrolet Trucks Traverse Premier uses the 255/55R20 radial size. Owners of this trim should focus on 20-inch fitment first, then compare replacement options based on the actual wheel setup and the condition of the suspension and steering components.
2021 Chevrolet Trucks Traverse Premier Redline Edition
The 2021 Chevrolet Trucks Traverse Premier Redline Edition uses the 255/55R20 radial size. Tire selection centers on the 20-inch wheel package, with added attention to preserving the intended visual stance if the vehicle still carries its original-style wheels.
The 2021 Chevrolet Trucks Traverse RS uses the 255/55R20 radial size. Choosing tires for the RS means confirming the 20-inch setup and then checking that any previous wheel, brake, or suspension changes have not altered the original clearance requirements.
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.
Frequently Asked Questions
These 2021 Chevrolet Trucks Traverse tire FAQs focus on the two factory-size paths, trim-level wheel differences, and the practical checks that matter before replacing tires on an 18-inch or 20-inch Traverse setup.
Tire Size & Fitment
What tire size fits a 2021 Chevrolet Trucks Traverse?
The 2021 Chevrolet Trucks Traverse uses two primary tire sizes: 255/65R18 and 255/55R20. Both are radial metric sizes, but they do not apply across every Traverse trim in the same way. The L uses 255/65R18, while High Country, Premier, Premier Redline Edition, and RS use 255/55R20. LS and LT can use either size depending on wheel package.
The practical step is to confirm the trim and the actual wheel diameter on the vehicle before buying tires. An 18-inch tire belongs on an 18-inch wheel, and a 20-inch tire belongs on a 20-inch wheel. If the Traverse has aftermarket wheels, check the installed wheel size directly rather than relying only on the trim name.
What size rim does a 2021 Chevrolet Trucks Traverse use?
The 2021 Chevrolet Trucks Traverse uses either an 18-inch rim or a 20-inch rim, depending on the sub-model and wheel setup. The 255/65R18 tire corresponds to an 18-inch wheel, while the 255/55R20 tire corresponds to a 20-inch wheel. Those two sizes are close in overall tire diameter, but they are built for different rim diameters.
Wheel diameter should be confirmed before choosing a replacement tire because the tire size cannot be separated from the wheel it mounts to. A Traverse with LS or LT trim deserves extra attention since those sub-models appear with both setups. Looking at the current tire sidewall and wheel stamping is the safest way to confirm what is actually on the vehicle.
Do all 2021 Chevrolet Trucks Traverse sub-models use the same tire size?
No, the 2021 Chevrolet Trucks Traverse does not use one tire size across every sub-model. High Country, Premier, Premier Redline Edition, and RS use 255/55R20, while the L uses 255/65R18. LS and LT are the trims where fitment can go either way, depending on the wheel package fitted to that specific vehicle.
That variation means trim name alone is not always enough, especially on an LS or LT. The tire size should match the actual wheel diameter already on the Traverse unless the wheel package is being changed deliberately and all related dimensions are being reviewed. A quick check of the sidewall size and wheel diameter prevents ordering the right tire for the wrong configuration.
Choosing the Right Tire
What should I consider when choosing a 255/55R20 tire for a 2021 Chevrolet Trucks Traverse?
Start by confirming that the Traverse is one of the 20-inch applications, such as High Country, Premier, Premier Redline Edition, RS, or a properly equipped LS or LT. The size itself means a 255-millimeter section width, a 55-series profile, radial construction, and a 20-inch rim. Choosing within that size is about matching the tire to the vehicle's actual wheel setup and intended driving use.
A good comparison should include the tire's construction, any load-related specifications, and whether the wheel package is still stock or has been altered. Since 255/55R20 and 255/65R18 are tied to different wheel diameters, the goal is not choosing between them casually but selecting the right 20-inch tire once that package has been confirmed on the Traverse.
What should I consider when choosing a 255/65R18 tire for a 2021 Chevrolet Trucks Traverse?
The first consideration is whether the vehicle is actually on the 18-inch setup. The 255/65R18 size belongs to the Traverse L and certain LS and LT configurations, and it indicates a 255-millimeter width, a 65-series aspect ratio, radial construction, and an 18-inch rim. That makes wheel confirmation the essential first step before comparing tire options.
Once the 18-inch package is confirmed, compare tires within that exact size rather than treating the 20-inch alternative as interchangeable. The close overall diameter between the two Traverse sizes can mislead buyers, but the rim diameter still controls fitment. If the vehicle has been modified, review wheel width, clearance, and suspension condition before settling on a replacement.
How do I choose between the available tire sizes for a 2021 Chevrolet Trucks Traverse?
The choice between 255/65R18 and 255/55R20 is not a matter of preference alone, because each size belongs to a specific wheel diameter. The Traverse uses one or the other depending on trim and wheel package. In practical terms, the correct size is whichever one matches the actual wheel installed on the vehicle.
That means the process starts with the wheel, not the tire catalog. A Traverse L points toward the 18-inch size, while High Country, Premier, Premier Redline Edition, and RS point toward the 20-inch size, with LS and LT requiring closer inspection. When wheels have been changed, verify diameter and clearance at the vehicle before selecting a tire.
Restoration & Appearance
Does correct tire fitment matter for a 2021 Chevrolet Trucks Traverse restoration?
Correct tire fitment still matters on a 2021 Chevrolet Trucks Traverse, even though this is a modern utility vehicle rather than a traditional restoration-era classic. The right tire size preserves the intended relationship between the wheel package, ride height, and overall stance. On this Traverse, that means keeping 255/65R18 with 18-inch applications and 255/55R20 with 20-inch applications.
Appearance is part of the equation because the wrong wheel-and-tire combination can change how the vehicle sits and fills the wheel openings. Buyers trying to maintain an original-style presentation should confirm the trim's proper wheel package first. On LS and LT models especially, the visual result depends on whether the vehicle was equipped with the 18-inch or 20-inch setup.
How does tire size affect the appearance of a 2021 Chevrolet Trucks Traverse?
Tire size affects the appearance of a 2021 Chevrolet Trucks Traverse because the vehicle uses two different wheel-and-tire combinations: 255/65R18 and 255/55R20. Even though the overall tire diameters are very close, the visual balance changes because one package uses an 18-inch wheel and the other uses a 20-inch wheel. That alters the sidewall height and the way the wheel fills the opening.
Owners who want the Traverse to keep its intended factory-style stance should match the replacement tire to the wheel package already on the vehicle. Mixing tire size strategy with unverified wheel changes can create an appearance that looks slightly off, even before clearance issues are considered. Checking the installed size first keeps the visual presentation consistent with the trim.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2021 Chevrolet Trucks Traverse?
Yes, modifications can affect tire fitment on a 2021 Chevrolet Trucks Traverse even when the tire size itself looks close to stock. Aftermarket wheels can change diameter, width, or offset, and suspension changes can alter available clearance during steering and suspension travel. Those factors matter whether the vehicle started with 255/65R18 or 255/55R20.
Any Traverse that has been lowered, lifted, or fitted with different wheels should be checked at the vehicle before replacement tires are chosen. The important points are wheel diameter, wheel width, steering clearance, and space at the fender and suspension. Matching the sidewall size alone is not enough when the underlying wheel and chassis setup may have changed.
What should I inspect before driving a 2021 Chevrolet Trucks Traverse on new tires?
Before driving a 2021 Chevrolet Trucks Traverse on new tires, inspect the wheel size, verify that the mounted tire matches the intended size, and confirm proper inflation. A quick visual check should also cover bead seating, valve stems, lug hardware, and basic clearance around the suspension and fenders. Those checks matter on both the 18-inch and 20-inch Traverse setups.
It also helps to inspect the vehicle's broader condition before regular road use. Uneven wear on the old tires, steering pull, vibration, or suspension noise can point to alignment or chassis issues that a fresh set of tires will not solve by itself. A short, careful road test after installation can reveal rubbing, balance concerns, or other setup problems.
How often should tires on a 2021 Chevrolet Trucks Traverse be inspected?
Tires on a 2021 Chevrolet Trucks Traverse should be inspected regularly rather than waiting for a visible problem. A routine check of pressure, tread condition, sidewall condition, and any signs of cuts, bulges, or irregular wear helps catch issues early. That applies whether the Traverse uses the 255/65R18 setup or the 255/55R20 setup.
Frequent inspection becomes even more important if the vehicle sits for long periods, carries family loads, or has had wheel or suspension changes. Looking over the tires before longer trips is a smart habit, especially on a crossover expected to cover highway miles. Consistent inspection also makes it easier to spot alignment problems before they shorten tire life.
