2021 Lincoln Trucks reflects Lincoln’s modern luxury SUV lineup at a point when the brand was leaning hard into quiet cabins, upscale road manners, and bold wheel-and-tire packages. In that model year, the Aviator, Corsair, Nautilus, and Navigator each occupied a distinct place in the range, from compact luxury crossover to full-size flagship utility. Tire sizing varies substantially across all four models, with 12 different radial sizes spread across 4 model lines rather than one shared fitment across the brand. The first step for any 2021 Lincoln Trucks owner is to confirm the exact model, then verify the correct size and wheel diameter before narrowing down the right tire.
Which Tire Size Is Right for Your 2021 Lincoln Trucks
Twelve tire sizes are used across 2021 Lincoln Trucks vehicles, and they vary by model rather than being shared across the full range. Every size here is a radial, so the real choice starts with confirming your specific model and wheel diameter, since Lincoln used multiple rim diameters from 18 to 22 inches across the lineup. Understanding that distinction before choosing a product saves time and helps ensure the right match.
Year(s): 2021|Fit(s): Aviator|Construction: Radial|Rim: 19-in rim
A 255/60R19 is a radial tire that measures 255 millimeters in section width, uses a 60-series aspect ratio, and mounts on a 19-inch wheel. This size is specific to the Aviator rather than shared across all 2021 Lincoln Trucks models. It suits an owner who needs the original wheel diameter and should confirm the exact trim and wheel package before choosing a tire.
Year(s): 2021|Fit(s): Aviator|Construction: Radial|Rim: 22-in rim
A 275/40R22 is a radial tire with a 275-millimeter section width, a 40-series aspect ratio, and a 22-inch rim diameter. This size is specific to Aviator applications and represents one of the larger wheel packages used in the 2021 Lincoln Trucks range. It is the right direction for an Aviator owner matching a factory-style 22-inch setup and wanting to stay with that wheel diameter.
Year(s): 2021|Fit(s): Aviator|Construction: Radial|Rim: 21-in rim
A 275/45R21 is a radial tire with a 275-millimeter width, a 45-series profile, and fitment for a 21-inch wheel. This size belongs only to Aviator models that use the 21-inch package, so it is not universal across 2021 Lincoln Trucks vehicles. It makes sense for owners preserving the original wheel size and appearance of that specific Aviator configuration.
Year(s): 2021|Fit(s): Aviator|Construction: Radial|Rim: 20-in rim
A 255/55R20 is a radial tire with a 255-millimeter section width, a 55-series aspect ratio, and a 20-inch rim diameter. This size is Aviator-specific within the 2021 Lincoln Trucks lineup and should be matched to the correct factory wheel package. It is the appropriate starting point for owners who have confirmed a 20-inch Aviator wheel and want to stay with that sizing.
Year(s): 2021|Fit(s): Corsair|Construction: Radial|Rim: 19-in rim
A 225/55R19 is a radial tire measuring 225 millimeters wide with a 55-series aspect ratio on a 19-inch wheel. This size is used only on the Corsair and is not shared with the other 2021 Lincoln Trucks models. It is the correct path for a Corsair owner who has confirmed the 19-inch factory wheel package.
Year(s): 2021|Fit(s): Corsair|Construction: Radial|Rim: 18-in rim
A 225/60R18 is a radial tire with a 225-millimeter section width, a 60-series profile, and an 18-inch rim diameter. This size is specific to Corsair applications within the 2021 Lincoln Trucks range. It is the fitment to pursue when the vehicle carries the 18-inch wheel setup and the goal is to match that original diameter.
Year(s): 2021|Fit(s): Corsair|Construction: Radial|Rim: 20 in
A 245/45R20 is a radial tire with a 245-millimeter section width, a 45-series aspect ratio, and a 20-inch rim diameter. BFGoodrich and Nitto both offer this size, all in Blackwall form, and speed ratings vary by product, including W up to 168 mph and Y up to 186 mph and above. This size is specific to Corsair models equipped with 20-inch wheels and gives buyers several modern performance-oriented radial choices within the same fitment.
Year(s): 2021|Fit(s): Nautilus|Construction: Radial|Rim: 18-in rim
A 245/60R18 is a radial tire that is 245 millimeters wide, uses a 60-series aspect ratio, and mounts on an 18-inch wheel. This size is specific to the Nautilus and does not cross over to the other 2021 Lincoln Trucks model lines. It is the proper starting point for a Nautilus owner confirming an 18-inch original wheel package.
Year(s): 2021|Fit(s): Nautilus|Construction: Radial|Rim: 21-in rim
A 265/40R21 is a radial tire with a 265-millimeter section width, a 40-series profile, and fitment for a 21-inch rim. This size is used only on certain Nautilus applications, making it model-specific rather than universal across 2021 Lincoln Trucks vehicles. It is the right choice when a Nautilus is equipped with the factory-style 21-inch wheel setup.
Year(s): 2021|Fit(s): Nautilus|Construction: Radial|Rim: 20-in rim
A 245/50R20 is a radial tire that measures 245 millimeters in width, carries a 50-series aspect ratio, and fits a 20-inch wheel. This size is specific to Nautilus models with the corresponding 20-inch package and is not shared across the wider 2021 Lincoln Trucks range. It is best matched by confirming the actual wheel diameter on the vehicle before selecting a tire.
Year(s): 2021|Fit(s): Navigator|Construction: Radial|Rim: 20-in rim
A 275/55R20 is a radial tire with a 275-millimeter section width, a 55-series aspect ratio, and a 20-inch rim diameter. This size belongs specifically to Navigator applications within the 2021 Lincoln Trucks family. It is the fitment to use when the vehicle carries the standard-style 20-inch full-size luxury SUV wheel package.
Year(s): 2021|Fit(s): Navigator|Construction: Radial|Rim: 22-in rim
A 285/45R22 is a radial tire measuring 285 millimeters wide with a 45-series profile on a 22-inch wheel. This size is exclusive to Navigator models using the larger 22-inch setup rather than shared across the 2021 Lincoln Trucks lineup. It is the correct direction for owners matching a large-diameter factory wheel package on Lincoln’s flagship utility model.
Four 2021 Lincoln Trucks models are covered here: Aviator, Corsair, Nautilus, and Navigator. They do not share a common tire size, so identifying the exact model is essential before choosing a size or comparing products. Select a model below to narrow your fitment search and see the tire options that match that specific Lincoln SUV.
2021 Lincoln Trucks Aviator
The 2021 Lincoln Trucks Aviator sits in the three-row midsize luxury SUV space, blending upscale appointments with a more athletic stance than Lincoln’s largest utilities. Its tires mount on 19-, 20-, 21-, or 22-inch wheels depending on configuration, so wheel diameter matters as much as the model name when sorting fitment.
The 2021 Lincoln Trucks Corsair is Lincoln’s compact luxury crossover, aimed at buyers who wanted premium comfort in a smaller footprint. Corsair fitments span 18-, 19-, and 20-inch wheels, and that range makes the exact wheel package the key detail to confirm before selecting tires.
The 2021 Lincoln Trucks Nautilus carries Lincoln’s two-row midsize luxury SUV formula, positioned for quiet cruising and contemporary styling. Its tires mount on 18-, 20-, or 21-inch wheels, so owners should verify the actual wheel diameter rather than assuming all Nautilus models use the same size.
The 2021 Lincoln Trucks Navigator is Lincoln’s full-size flagship SUV, known for its commanding size, luxury focus, and substantial wheel-and-tire presence. Navigator fitments here mount on either 20-inch or 22-inch wheels, making size confirmation straightforward once the wheel package is identified.
Four products are available across one tire size for 2021 Lincoln Trucks vehicles. The 245/45R20 has four BFGoodrich and Nitto radial choices in Blackwall styling. Confirm your exact size first, and check the specific tire’s speed rating before making a final selection.
These FAQs focus on how 2021 Lincoln Trucks tire sizes differ by model, what the modern metric size codes mean, how the available 245/45R20 products compare, and what to check for long-term use on luxury SUVs that may see seasonal or lower annual mileage.
Size Basics & Fitment
What tire sizes fit 2021 Lincoln Trucks vehicles?
2021 Lincoln Trucks vehicles use 12 different tire sizes across four SUV models. Aviator uses 255/60R19, 255/55R20, 275/45R21, and 275/40R22; Corsair uses 225/60R18, 225/55R19, and 245/45R20; Nautilus uses 245/60R18, 245/50R20, and 265/40R21; Navigator uses 275/55R20 and 285/45R22. All of these are radial sizes, and the wheel diameters span 18, 19, 20, 21, and 22 inches.
That means year and make alone are not enough to choose a tire for 2021 Lincoln Trucks vehicles. The practical first check is the exact model, followed by the wheel diameter currently on the vehicle. If the SUV has had wheel changes, compare the sidewall size marking on the existing tire to the actual wheel before choosing a replacement.
What does 245/45R20 mean on a 2021 Lincoln Trucks tire?
On a 2021 Lincoln Trucks tire, 245/45R20 is a modern metric radial size. The 245 is the nominal section width in millimeters, 45 is the aspect ratio, the R means radial construction, and 20 is the wheel diameter in inches. Within the 2021 Lincoln Trucks range, that size applies to the Corsair.
Reading the size this way helps separate two different questions: whether the tire fits the wheel, and whether it belongs on the model in question. A 245/45R20 tire must go on a 20-inch wheel, but that still does not make it universal across all 2021 Lincoln Trucks models. Matching the full size code to the model and wheel package is the reliable approach.
Do all 2021 Lincoln Trucks models use the same tire size?
No, 2021 Lincoln Trucks models do not use the same tire size. Every model in the lineup has its own group of fitments, and each size is tied to a single model family rather than shared across Aviator, Corsair, Nautilus, and Navigator. The range stretches from compact-crossover 18-inch fitments up to 22-inch full-size and large-wheel luxury SUV applications.
For a buyer, that means the badge on the liftgate matters just as much as the year. A Corsair owner and a Navigator owner are shopping in completely different size families, even if both vehicles came from the same showroom year. Confirming the model first prevents chasing a tire that is correct in diameter for one Lincoln but wrong in width or profile for another.
Buying the Right Tire
What sidewall styles are available for 2021 Lincoln Trucks tires?
Among the currently covered 2021 Lincoln Trucks products, the 245/45R20 size is available in Blackwall form. That gives the Corsair 20-inch fitment a clean, contemporary sidewall appearance that matches the modern luxury SUV character of the 2021 lineup. No alternate sidewall treatment appears within the available products for that size.
For most 2021 Lincoln Trucks owners, sidewall appearance is less about period authenticity and more about visual preference and how the tire complements the wheel design. If you are replacing only two tires, matching the existing sidewall style matters for a consistent look. If you are replacing a full set, sidewall style becomes part of the overall appearance decision alongside size and speed rating.
What brands make tires for 2021 Lincoln Trucks vehicles?
BFGoodrich and Nitto both make tires for 2021 Lincoln Trucks vehicles in the covered 245/45R20 Corsair fitment. BFGoodrich appears with multiple g-Force family options, while Nitto is represented by the NT555 G2. All of those products are radial Blackwall tires aimed at modern road use.
Brand choice in this case comes down to the specific product characteristics within the correct size, not to a different fitment standard for the vehicle. Once the wheel diameter and size are confirmed, compare the available series by speed rating, rim-width suitability, and overall intended use. That keeps the decision focused on the tire that best matches how the vehicle is actually driven.
What is the difference between BFGoodrich and Nitto options for the 2021 Lincoln Trucks 245/45R20 size?
In 245/45R20 for 2021 Lincoln Trucks Corsair applications, BFGoodrich offers several choices including g-Force Sport Comp 2, g-Force Comp 2 A/S, and g-Force Phenom T/A, while Nitto offers the NT555 G2. The BFGoodrich products shown here include W- and Y-rated versions and carry weights around 30 to 30.73 pounds, while the Nitto NT555 G2 is W-rated and weighs 30.38 pounds. BFGoodrich also shows a 7.5- to 9-inch rim-width range on the examples where that detail appears.
Those differences matter most when you are narrowing within the correct Corsair 20-inch fitment rather than deciding whether the size itself is right. A buyer comparing these tires should look at speed rating, rim-width compatibility, and whether an all-season or more performance-focused character better suits the vehicle’s use. Keeping the comparison inside the same size avoids accidental crossover into a tire that will not fit the wheel.
Fitting & Setup
What rim width do 2021 Lincoln Trucks tires require?
Rim-width guidance appears here for the 2021 Lincoln Trucks 245/45R20 size, where the BFGoodrich examples fit a 7.5- to 9-inch wheel width range. That size also mounts on a 20-inch rim diameter, which must match the wheel exactly. Other 2021 Lincoln Trucks sizes still require the correct rim diameter even where a width range is not shown here.
The practical takeaway is to verify both numbers before mounting tires: the wheel’s diameter and, when available, its width. A tire that matches the 20-inch diameter but sits outside the approved wheel-width range can create fitment and handling issues. If the vehicle has aftermarket wheels, checking the wheel’s stamped dimensions is worth doing before choosing a tire.
Do 2021 Lincoln Trucks tires require inner tubes?
The available 245/45R20 products for 2021 Lincoln Trucks are modern radial tires, and one BFGoodrich all-season example carries a TL tubeless marking in its size string. The rest of the covered 245/45R20 products do not all show the same tube notation in the sidewall size description, so tube status can vary by product marking rather than being assumed from size alone. No tube-type marking appears here for this fitment.
That means the safest approach is to verify the specific tire’s sidewall designation and the wheel’s design before installation. Modern OEM-style wheels on 2021 Lincoln Trucks vehicles are typically associated with tubeless radial service, but the tire’s own markings are the final check. If a shop is mounting the tires, have them confirm valve-stem condition and sealing surfaces at the same time.
Maintenance, Storage & Longevity
How should I store a 2021 Lincoln Trucks when the tires are fitted?
A 2021 Lincoln Trucks vehicle should be stored out of direct sunlight, away from ozone-producing equipment such as electric motors and battery chargers, and on a clean, dry surface. Keep the tires properly inflated during storage so the vehicle’s weight is supported as intended. If the SUV will sit for a long period, moving it periodically helps reduce flat spotting and stress concentration in one contact patch area.
Luxury SUVs often spend stretches parked between trips, so tire care during storage matters even when tread depth still looks healthy. If the vehicle will be down for a season, a clean indoor environment and regular pressure checks do more for tire life than simply covering the vehicle. Owners who store a spare should inspect that tire too, since it ages even when it is rarely used.
How long do tires on a 2021 Lincoln Trucks typically last?
Tires on a 2021 Lincoln Trucks vehicle should be judged by age as much as tread wear. A good practice is to begin more careful evaluation once tires reach about five to seven years of age and to consider replacement around the ten-year mark regardless of remaining tread, using the DOT date code to verify age. Heat cycles, storage conditions, and inflation history all affect real service life.
That matters because many luxury SUVs accumulate miles unevenly: some are daily driven, while others see lighter seasonal use. A tire can look substantial on the tread face yet still be aging out on the sidewall or internally. If the vehicle has older tires with low mileage, age should carry more weight in the decision than mileage alone.
How often should tires on a 2021 Lincoln Trucks be inspected?
Tires on a 2021 Lincoln Trucks vehicle should be inspected before every drive and given a more thorough check before highway trips or long-distance travel. Look for visible cracking, cuts, bulges, irregular wear, and any sign that the tire is losing pressure. On modern radial SUV tires, shoulder wear and impact damage from potholes are especially worth watching.
Frequent inspection catches problems while they are still inexpensive and simple to address. If the vehicle pulls, vibrates, or shows uneven tread wear, that is also a cue to inspect alignment and suspension condition rather than blaming the tire alone. Keeping a handheld gauge in the vehicle makes it easier to verify pressure when the tires are cold.
Safety & Road Use
Are 2021 Lincoln Trucks tires safe for highway driving?
Yes, 2021 Lincoln Trucks tires in the covered 245/45R20 fitment can be suitable for highway driving when they are in good condition, correctly inflated, and matched to the proper wheel. The available products in that size include W-rated tires with a 168 mph ceiling and Y-rated tires with a 186 mph-and-above ceiling. Those ratings are well beyond normal U.S. highway speeds, provided the tire is otherwise appropriate for the vehicle and load.
Real-world safety still depends on more than the speed symbol on the sidewall. Alignment, tire age, impact damage, brake condition, and suspension health all influence how securely a 2021 Lincoln Trucks SUV travels at interstate speed. For most owners, choosing the correct size and maintaining it properly is more important than chasing the highest available speed rating.
What inflation pressure should I use for 2021 Lincoln Trucks tires?
Inflation pressure for 2021 Lincoln Trucks tires should follow the vehicle placard or owner’s manual for the exact model and size, then be checked against the tire manufacturer’s own service guidance. In the covered 245/45R20 fitment, one BFGoodrich product carries a maximum load of 1,930 pounds at 50 psi, and another is marked 1,929 pounds at 50 psi. Those figures describe the tire’s rated maximum load-and-pressure relationship, not necessarily the vehicle’s everyday recommended setting.
That distinction matters because the correct operating pressure on the vehicle is usually lower than the sidewall maximum. Never transfer a pressure figure from one 2021 Lincoln Trucks size to another just because both are on the same make. Start with the factory placard for your specific model and wheel package, then fine-tune only within the tire maker’s approved guidance.
What should I check before taking a 2021 Lincoln Trucks on a longer drive?
Before taking a 2021 Lincoln Trucks vehicle on a longer drive, inspect each tire for cracking, punctures, bulges, uneven wear, and any sign of impact damage. Confirm cold inflation pressure, inspect the valve stems, and make sure the spare is present and serviceable if the vehicle is equipped with one. A quick look at the tread for embedded debris and shoulder wear is also worthwhile.
Tire checks should be part of a broader pre-trip inspection on a modern luxury SUV. A longer drive also calls for a look at brakes, fluid levels, battery condition, and suspension behavior, especially if the vehicle has been parked for extended periods. Catching a weak tire or slow leak in the driveway is far better than discovering it once the trip is underway.
