The 2020 Subaru Legacy sits in the modern midsize sedan class with a strong emphasis on all-weather drivability, comfort, and everyday road manners. In this generation, the Legacy balances contemporary sedan proportions with Subaru’s practical, year-round character, so tire choice has a real effect on how the car feels and looks. This model uses radial tires in two primary sizes, 225/55R17 or 225/50R18, depending on sub-model. Available choices lean toward blackwall performance-oriented options, while 17-inch fitments also include wide whitewall and redline selections for a more distinctive appearance. The key is matching the exact trim first, then choosing the tire style that suits your driving priorities and presentation goals.
Which Tire Size Is Right for The 2020 Subaru Legacy
The 2020 Subaru Legacy uses two primary tire sizes, and the correct one depends on the specific sub-model and wheel diameter. Base and Premium models use a 17-inch setup with 225/55R17, while Limited, Limited XT, Sport, and Touring XT models use 225/50R18 on an 18-inch rim. Before comparing tire choices, confirm the trim and the actual wheel diameter currently on the car, especially if it has been changed from stock.
225/55R17 is a metric radial size where 225 is the nominal section width in millimeters, 55 is the aspect ratio, R identifies radial construction, and 17 is the wheel diameter in inches. On the 2020 Subaru Legacy, this size is used on 17-inch applications and supports the car’s everyday touring character. Available choices include blackwall performance-oriented series as well as Silvertown Radial options in wide whitewall and redline sidewall styles. This size is the right place to focus if the car has 17-inch wheels and the goal is to balance proper fitment with either a standard modern look or a more distinctive visual treatment.
Fit(s): Limited, Limited XT, Sport, and Touring XT
Construction: Radial|Rim: 18 in
225/50R18 is also a metric radial size, with the same 225-millimeter nominal width but a lower 50-series profile on an 18-inch wheel. For the 2020 Subaru Legacy, this size belongs to the 18-inch sub-model applications and keeps the tire matched to that wheel package. Product choices in this size center on blackwall BFGoodrich performance-oriented radial lines, including several g-Force series options. This size should be evaluated when the car is equipped with 18-inch wheels and the priority is staying with the proper trim-specific fitment while comparing series characteristics within the correct overall package.
Tire fitment on the 2020 Subaru Legacy varies by sub-model rather than following one size across the full lineup. Checking the exact trim matters first, because the car uses both 17-inch and 18-inch wheel-and-tire packages depending on configuration.
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2020 Subaru Legacy Base
The 2020 Subaru Legacy Base uses the 225/55R17 radial size on a 17-inch wheel package. That makes tire selection more about choosing among available radial styles and series in the correct size rather than sorting through multiple fitments.
The 2020 Subaru Legacy Limited uses the 225/50R18 radial size tied to the 18-inch wheel setup. Tire selection here centers on staying with the correct lower-profile 18-inch fitment and comparing the available blackwall performance-oriented options.
The 2020 Subaru Legacy Limited XT uses the same 225/50R18 radial size found on other 18-inch Legacy trims. The practical step is confirming that the car still has its 18-inch wheels, then choosing among the available radial series in that size.
The 2020 Subaru Legacy Premium uses 225/55R17 radial tires on a 17-inch wheel. That opens the door to either a conventional blackwall presentation or, in this size, specialty sidewall treatments that change the car’s appearance without changing the basic fitment category.
The 2020 Subaru Legacy Sport uses the 225/50R18 radial size on an 18-inch rim. Choosing tires for this trim starts with confirming the wheel diameter, then comparing the available radial series that match the Sport’s correct size.
The 2020 Subaru Legacy Touring XT uses 225/50R18 radial tires with the 18-inch wheel package. The main selection decision is not size crossover, but which available radial series best matches the car’s road use and preferred appearance.
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 2020 Subaru Legacy Tires for Sale
Available 2020 Subaru Legacy tire choices center on BFGoodrich radial products in the correct 17-inch and 18-inch sizes. Buyers can compare g-Force series blackwall options across both fitments, while 225/55R17 also adds Silvertown Radial choices with wide whitewall and redline sidewall treatments.
Common 2020 Subaru Legacy tire questions usually come down to trim-specific size selection, 17-inch versus 18-inch wheel fitment, available radial tire styles, and what to inspect before putting the car back into regular road use.
Tire Size & Fitment
What tire size fits a 2020 Subaru Legacy?
The 2020 Subaru Legacy uses two primary tire sizes: 225/55R17 and 225/50R18. The Base and Premium sub-models use 225/55R17, while the Limited, Limited XT, Sport, and Touring XT use 225/50R18. Both are radial tire fitments, but they are tied to different wheel diameters and trims.
The first step is confirming the exact sub-model and checking whether the car still has its original wheel size. A Legacy that has had wheel changes in the past may no longer match its original trim-based setup, so the tire should always be matched to the wheel diameter actually on the vehicle.
What size rim does a 2020 Subaru Legacy use?
A 2020 Subaru Legacy uses either a 17-inch or 18-inch rim, depending on sub-model. The 225/55R17 tire size belongs to the 17-inch setup, and the 225/50R18 tire size belongs to the 18-inch setup. Rim diameter is one of the main reasons this Legacy has more than one correct tire size.
Checking the wheel diameter matters before comparing tread designs or sidewall styles, because a 17-inch tire cannot be mounted on an 18-inch wheel, and the reverse is also true. If the car has aftermarket wheels, verify both the diameter and width before selecting a replacement tire.
Do all 2020 Subaru Legacy sub-models use the same tire size?
No, 2020 Subaru Legacy sub-models do not all use the same tire size. Base and Premium models use 225/55R17, while Limited, Limited XT, Sport, and Touring XT models use 225/50R18. The difference follows the trim-specific wheel package rather than a universal Legacy fitment.
That means the trim badge and the wheel on the car both deserve a quick check before purchase. Looking at the current tire sidewall is also helpful, but it is smart to confirm that the car has not been changed from its original wheel-and-tire setup before choosing a replacement.
Choosing the Right Tire
What should I consider when choosing a 225/55R17 tire for a 2020 Subaru Legacy?
For a 2020 Subaru Legacy using 225/55R17, start with the correct radial size and a 17-inch wheel. Then compare the available tire series, sidewall treatment, rim-width compatibility, and any load figures that matter for your intended use. In this size, choices range from blackwall g-Force lines to Silvertown Radial options with wide whitewall or redline styling.
The best choice depends on whether the car is being kept visually understated or given a more customized look. It also helps to confirm the wheel width before narrowing the field, since some 225/55R17 products are suited to a broader rim-width range than others.
What sidewall styles are available for 2020 Subaru Legacy tires?
Sidewall style depends on the Legacy’s tire size. Blackwall options are available in both 225/55R17 and 225/50R18, while 225/55R17 also includes wide whitewall and redline choices. That means the 17-inch fitment offers more visual variety, while the 18-inch fitment stays focused on a conventional blackwall presentation.
Sidewall selection changes the car’s appearance more than its basic fitment category, so the first requirement is still matching the correct size to the correct wheel. Once that is settled, sidewall style becomes a useful way to steer the Legacy toward a standard modern look or a more distinctive custom presentation.
What tire series are available for the 2020 Subaru Legacy?
Available tire series for the 2020 Subaru Legacy include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and Silvertown Radial. The 17-inch 225/55R17 size includes both g-Force and Silvertown options, while the 18-inch 225/50R18 size centers on the g-Force and Phenom series in blackwall form.
Series choice helps narrow the field once the trim and wheel diameter are confirmed. It is worth comparing details such as sidewall treatment, rim-width range, weight, and load figures where available, especially if the car is used differently than a standard daily-driven midsize sedan.
Restoration & Appearance
Which tire should I choose for a period-style 2020 Subaru Legacy?
A 2020 Subaru Legacy is too recent for traditional restoration language, but appearance still matters if the goal is a more distinctive or themed presentation. In practical terms, that means starting with the correct trim-based size, then choosing between standard blackwall options or, on 225/55R17, specialty sidewall styles such as wide whitewall or redline.
The visual result depends heavily on wheel diameter and sidewall treatment, so the 17-inch fitment offers the broadest appearance choices. Any style change should stay grounded in proper size, wheel compatibility, and clearance, since visual preference should not override the basic fitment requirements of the car.
How does tire construction affect the appearance of a restored or customized 2020 Subaru Legacy?
On the 2020 Subaru Legacy, the primary fitments are radial tires, so appearance differences come more from size, profile, and sidewall treatment than from switching between bias-ply and radial construction. A 17-inch Legacy can take on a more unusual visual character with wide whitewall or redline styling, while the 18-inch setup remains blackwall-focused.
That makes wheel-and-tire presentation especially important on a customized car. A lower-profile 18-inch tire reads more contemporary, while the 17-inch package leaves room for sidewall details that stand out more. Even on a style-driven build, the right path is still to keep the tire matched to the correct wheel diameter and trim.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Subaru Legacy?
Yes, modifications can affect tire fitment on a 2020 Subaru Legacy. Aftermarket wheels, changes in wheel width, altered offset, suspension lowering, or body changes can all influence whether the original 225/55R17 or 225/50R18 size remains the best match. Even when the size stays the same, wheel specifications can change how the tire sits and clears.
That is why the current wheel setup should be checked before replacing tires, especially on a used car. Look at the actual wheel diameter and width, then confirm clearance around the fenders, suspension, and steering range so the new tire matches the Legacy’s present configuration rather than assumptions about past setup.
What should I inspect before driving a 2020 Subaru Legacy on new tires?
Before driving a 2020 Subaru Legacy on new tires, inspect overall installation quality and the condition of the surrounding wheel-and-suspension hardware. The tires should match the car’s wheel diameter, show no visible mounting damage, and hold stable air pressure. It is also smart to look over tread seating, valve stems, and any signs of rubbing.
A short initial drive followed by a recheck helps catch issues early. Pay attention to vibration, steering pull, unusual noise, or contact at full steering lock, then inspect again. On a car that has sat for periods of time, checking alignment condition and suspension wear adds another layer of confidence before regular road use.
How often should tires on a 2020 Subaru Legacy be inspected?
Tires on a 2020 Subaru Legacy should be inspected regularly rather than only when tread looks worn. A quick visual check every month and before longer trips is a sensible routine, with closer attention paid to tread condition, air loss, cuts, bulges, and uneven wear. The same habit applies whether the car uses 17-inch or 18-inch fitment.
Cars that see irregular use still benefit from frequent inspection because age, curb contact, and slow pressure loss can go unnoticed. Looking over the sidewalls and shoulders, checking pressure cold, and watching for changes in ride quality or steering feel can help catch developing problems before they become more serious.
