The 2021 Lincoln Trucks Aviator blends modern three-row luxury with the sharper stance and road presence that define Lincoln’s newer SUV lineup. Buyers usually arrive here knowing the Aviator is less about vintage-style tire decisions and more about matching the exact wheel package fitted to the vehicle. This model uses four primary radial sizes: 255/60R19, 255/55R20, 275/45R21, and 275/40R22. That makes wheel diameter and sub-model identification the first step, especially since Reserve and Black Label configurations can differ. Once the correct size is confirmed, the real choice shifts toward maintaining the intended look, ride balance, and clearance with the right modern radial fitment.
Which Tire Size Is Right for The 2021 Lincoln Trucks Aviator
The 2021 Lincoln Trucks Aviator uses four different primary tire sizes, and the correct one depends on the exact sub-model and wheel package. These are all radial fitments, but they span 19-inch, 20-inch, 21-inch, and 22-inch rims, so confirming the vehicle’s actual wheel diameter is the first step before comparing tire options or replacement specifications.
255/60R19 is a metric radial size in which 255 indicates section width in millimeters, 60 is the aspect ratio, R identifies radial construction, and 19 is the rim diameter in inches. On the 2021 Lincoln Trucks Aviator, this size suits a 19-inch wheel setup and reflects a modern SUV fitment rather than a vintage sizing system. Its proportions are geared toward preserving the intended relationship between tire height and wheel size. This is the size to verify when the Aviator is fitted with the 19-inch wheel package rather than one of the larger optional diameters.
Fit(s): Black Label, Reserve (AWD), and Reserve (RWD)
Construction: Radial|Rim: 22 in
275/40R22 is a metric radial size with a 275-millimeter nominal section width, a 40-series profile, and fitment for a 22-inch rim. For the 2021 Lincoln Trucks Aviator, it represents one of the largest wheel-and-tire combinations used across covered sub-models. The lower-profile sidewall gives this size a different visual character than the 19-inch and 20-inch fitments, even though overall tire diameter remains in a similar range. This is the size to confirm when the vehicle has 22-inch wheels, particularly on Black Label or certain Reserve configurations.
Fit(s): Black Label Grand Touring Plug-In Hybrid and Grand Touring Plug-In Hybrid
Construction: Radial|Rim: 21 in
275/45R21 uses a 275-millimeter section width, a 45-series aspect ratio, radial construction, and a 21-inch rim diameter. On the 2021 Lincoln Trucks Aviator, this size is tied to the Grand Touring Plug-In Hybrid configurations, where identifying the exact sub-model matters more than assuming all Aviators share the same tire fitment. Its sizing places it between the 20-inch and 22-inch packages in wheel diameter while maintaining a substantial overall tire height. This is the right size to evaluate when replacing tires on an Aviator equipped with the 21-inch plug-in hybrid wheel package.
255/55R20 is a metric radial size that combines a 255-millimeter nominal width with a 55-series profile on a 20-inch rim. For the 2021 Lincoln Trucks Aviator, this size appears on Reserve models and shares a similar section width with the 19-inch fitment while using a larger wheel diameter. That makes wheel confirmation especially important, since a 20-inch tire cannot be selected by overall appearance alone. This is the size to check when an Aviator Reserve is equipped with its 20-inch wheel package rather than the available 22-inch setup.
Sub-model fitment matters on the 2021 Lincoln Trucks Aviator because tire size changes with both trim and wheel package. Some versions use one dedicated size, while Reserve models can use either of two radial fitments depending on the wheels actually on the vehicle.
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2021 Lincoln Trucks Aviator Base
The 2021 Lincoln Trucks Aviator Base uses a single 255/60R19 radial fitment tied to its 19-inch wheel setup. Tire selection is straightforward once the original wheel diameter is confirmed, with the main focus shifting to maintaining the proper size and overall proportions.
The 2021 Lincoln Trucks Aviator Black Label uses 275/40R22 radial tires on a 22-inch wheel package. That makes wheel confirmation especially important, since the larger-diameter setup is visually distinct and requires replacement tires matched to the same rim size.
2021 Lincoln Trucks Aviator Black Label Grand Touring Plug-In Hybrid
The 2021 Lincoln Trucks Aviator Black Label Grand Touring Plug-In Hybrid uses 275/45R21 radial tires. Selecting tires for this version starts with confirming the plug-in hybrid’s 21-inch wheel package so the replacement size matches the vehicle’s intended fitment and stance.
2021 Lincoln Trucks Aviator Grand Touring Plug-In Hybrid
The 2021 Lincoln Trucks Aviator Grand Touring Plug-In Hybrid also uses the 275/45R21 radial size. For this sub-model, the practical step is choosing a replacement that stays within the correct 21-inch fitment rather than assuming interchangeability with other Aviator wheel packages.
The 2021 Lincoln Trucks Aviator Reserve (AWD) can use either 255/55R20 or 275/40R22 radial tires, depending on the wheel package installed. Tire selection begins with checking whether the vehicle has 20-inch or 22-inch wheels, since the Reserve trim does not point to a single size by itself.
The 2021 Lincoln Trucks Aviator Reserve (RWD) can be fitted with either 255/55R20 or 275/40R22 radial tires. That means the wheel diameter on the vehicle needs to be verified before comparing replacement tires, even within the same Reserve badging.
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
Tire questions for the 2021 Lincoln Trucks Aviator usually come down to size-by-sub-model fitment, wheel diameter, and choosing the right modern radial setup. The FAQs below focus on exact size use, selection factors, and the checks that matter before regular road use.
Tire Size & Fitment
What tire size fits a 2021 Lincoln Trucks Aviator?
The 2021 Lincoln Trucks Aviator uses four primary tire sizes: 255/60R19, 255/55R20, 275/45R21, and 275/40R22. The correct size depends on the exact sub-model and wheel package, not simply the Aviator name alone, because different trims and configurations use different rim diameters.
The practical first step is to confirm which wheels are actually on the vehicle. A Base model uses 255/60R19, Grand Touring Plug-In Hybrid models use 275/45R21, and Black Label uses 275/40R22, while Reserve models may use either 255/55R20 or 275/40R22. Checking the current tire sidewall and wheel size helps prevent choosing the wrong fitment.
What size rim does a 2021 Lincoln Trucks Aviator use?
A 2021 Lincoln Trucks Aviator can use 19-inch, 20-inch, 21-inch, or 22-inch rims depending on the sub-model and wheel package. Those rim diameters correspond to the vehicle’s four primary tire sizes: 255/60R19, 255/55R20, 275/45R21, and 275/40R22.
Rim diameter is the key fitment checkpoint because a tire must match the wheel exactly. A 20-inch tire cannot be mounted on a 19-inch or 22-inch wheel, even if overall tire height looks similar. On Reserve models especially, the trim name alone is not enough, so it helps to confirm the installed wheel before selecting replacement tires.
Why does the 2021 Lincoln Trucks Aviator have more than one tire size?
The 2021 Lincoln Trucks Aviator has more than one tire size because different sub-models and wheel packages were fitted with different rim diameters. Base, Grand Touring Plug-In Hybrid, Black Label, and Reserve configurations do not all share the same wheel-and-tire combination, so the correct fitment changes with the setup.
That variation means tire selection starts with identifying the exact sub-model and then confirming the wheels on the vehicle. Reserve models are the clearest example because they can use either 255/55R20 or 275/40R22. If the Aviator has had wheel changes since new, the installed wheel size matters more than trim name alone when replacing tires.
Choosing the Right Tire
What should I consider when choosing a tire for a 2021 Lincoln Trucks Aviator?
Start with the exact tire size and wheel diameter used by the specific 2021 Lincoln Trucks Aviator sub-model. This vehicle uses only radial fitments, but those fitments vary across 19-inch, 20-inch, 21-inch, and 22-inch wheels, so choosing by appearance alone can lead to the wrong tire.
Once the correct size is confirmed, compare the tire’s intended use with the vehicle’s role as a luxury SUV. It helps to verify load suitability, overall tire condition, and whether the vehicle still has its original wheel setup. If aftermarket wheels have been installed, checking width, clearance, and fit at full steering lock becomes especially important.
How do I choose between the available tires for a 2021 Lincoln Trucks Aviator Reserve?
Choosing tires for a 2021 Lincoln Trucks Aviator Reserve begins with confirming whether the vehicle has the 255/55R20 fitment or the 275/40R22 fitment. Both sizes are correct for Reserve models, but they are tied to different wheel packages and cannot be treated as interchangeable primary choices.
After wheel diameter is verified, select within that exact size rather than moving between sizes because they appear close in overall proportions. A 20-inch Reserve and a 22-inch Reserve require different replacement tires. Checking the current tire sidewall, the wheel stamping, and the vehicle’s present setup is the safest way to narrow the choice correctly.
How do I choose between the available primary tire sizes on a 2021 Lincoln Trucks Aviator?
The available primary tire sizes on a 2021 Lincoln Trucks Aviator are not alternative upgrades within one universal fitment range. Each size belongs to a particular sub-model or wheel package, so the right choice is the one that matches the vehicle’s actual wheels: 19, 20, 21, or 22 inches.
That makes identification more important than preference. Base models point to 255/60R19, Grand Touring Plug-In Hybrid models use 275/45R21, Black Label uses 275/40R22, and Reserve models can use either 255/55R20 or 275/40R22. If the Aviator was purchased used or has been modified, verifying what is installed on the vehicle prevents ordering the wrong size.
Restoration & Appearance
Does correct tire fitment matter for a 2021 Lincoln Trucks Aviator?
Correct tire fitment matters on a 2021 Lincoln Trucks Aviator because the vehicle was offered with multiple wheel diameters and matching radial sizes. Staying with the proper size preserves the intended relationship between wheel diameter, sidewall height, and overall stance, which is especially noticeable on a modern luxury SUV.
Appearance still needs to be tied to fitment discipline. A 22-inch Black Label setup presents very differently from a 19-inch Base configuration, but that does not make the sizes interchangeable. When the goal is to maintain the vehicle’s original visual character, matching the correct size for the exact sub-model is the starting point.
How does tire size affect the appearance of a 2021 Lincoln Trucks Aviator?
Tire size has a visible effect on the appearance of a 2021 Lincoln Trucks Aviator because the model spans 19-inch through 22-inch wheel packages. A 255/60R19 setup shows more sidewall, while 275/40R22 presents a larger wheel and lower-profile tire, changing the vehicle’s overall visual balance.
That difference matters when keeping the Aviator close to its intended trim-specific look. A Base model, a Grand Touring Plug-In Hybrid, and a Black Label do not share the same visual tire presentation, even though overall tire diameters remain relatively close. Matching the correct size to the actual wheel package is the cleanest way to preserve that appearance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2021 Lincoln Trucks Aviator?
Yes, modifications can affect tire fitment on a 2021 Lincoln Trucks Aviator. Wheel changes, suspension lowering, altered offsets, or non-original tire sizes can change clearance at the fender, suspension, or steering components, even when the vehicle originally used one of the four standard radial fitments.
That is especially important on Reserve models, where more than one wheel package was used from the start. If the Aviator has aftermarket wheels, check actual rim diameter and width before replacing tires. It also helps to inspect clearance at full steering lock and under compression rather than assuming the current setup matches factory-style dimensions.
What should I inspect before driving a 2021 Lincoln Trucks Aviator on new tires?
Before driving a 2021 Lincoln Trucks Aviator on new tires, inspect the wheel size, confirm the installed tire size matches the vehicle’s setup, and check inflation pressure. It is also wise to look over the wheels for damage and make sure the tires seat properly and clear suspension and body components.
A short follow-up inspection after the first miles is a good habit. Recheck pressure, look for any signs of rubbing, and confirm the steering feels normal through full lock in both directions. Since this model uses several wheel diameters across its sub-model range, verifying those basics helps avoid fitment issues that may not show up immediately at installation.
How often should tires on a 2021 Lincoln Trucks Aviator be inspected?
Tires on a 2021 Lincoln Trucks Aviator should be inspected regularly, not just at replacement time. Routine checks should include tread wear, air pressure, cuts, bulges, cracking, and any signs of uneven wear that could point to alignment, suspension, or inflation issues on the vehicle’s current wheel-and-tire package.
Regular inspection matters even more if the Aviator sees mixed use, long highway trips, or periods of lower mileage. A quick visual check before a drive and a more thorough inspection at service intervals helps catch problems early. On vehicles with 21-inch or 22-inch fitments, sidewall condition and clearance should be watched just as closely as tread.
