2020 Subaru WRX Tires

A 2020 Subaru WRX uses one of two radial tire sizes: 235/45R17 or 245/40R18. The Base trim uses 235/45R17, while the Limited, Premium, and Premium Series.White use 245/40R18. Both are modern metric radial sizes, but they are tied to different wheel diameters and should not be treated as interchangeable primary fitments.

The first step is confirming the exact trim level and checking the wheel diameter actually on the car. Many WRXs have seen wheel changes, so the door-jamb information and the tire sidewall should both be checked before selecting a replacement. Once the correct size is confirmed, the next decision becomes tire series, sidewall style, and whether the car will be used mainly for street driving or a more specialized purpose.

The 2020 Subaru WRX uses either a 17-inch or 18-inch rim, depending on sub-model. The 235/45R17 fitment is built for a 17-inch wheel, while the 245/40R18 fitment is built for an 18-inch wheel. Rim diameter is the non-negotiable starting point because a 17-inch tire cannot mount on an 18-inch wheel, and an 18-inch tire cannot mount on a 17-inch wheel.

Wheel width matters too, especially when comparing among available products within the same size. Several WRX tire options list approved rim-width ranges, and those should match the actual wheels on the car. A quick measurement or wheel-spec check is worthwhile if the WRX has aftermarket wheels, since correct tire size alone does not automatically confirm proper wheel compatibility.

No. The 2020 Subaru WRX Base uses 235/45R17, while the Limited, Premium, and Premium Series.White use 245/40R18. That split means the lineup does not share one universal tire size, even though every fitment is a radial. The difference is tied to trim and wheel diameter rather than to a separate bias-ply-versus-radial decision.

That distinction matters because it changes more than the numbers on the sidewall. It also changes which products are available, including sidewall treatments and specialty tire choices on the 18-inch fitment. Anyone buying for a WRX should confirm the trim and inspect the current wheels first, especially if the car has been modified or purchased used with wheels that may not match its original configuration.

Start with the correct size for the car’s trim and wheel diameter, then compare the available radial tire series within that size. For the 2020 Subaru WRX, that means deciding between 235/45R17 on 17-inch applications and 245/40R18 on 18-inch applications. From there, useful comparison points include brand, approved rim-width range, sidewall style, tire weight, and whether the tire is aimed at general street use or something more specialized.

A practical choice depends on how the WRX is driven and how you want it to look. A blackwall performance radial may suit an understated street setup, while a redline or raised white letter option changes the car’s presentation more noticeably. Specialty tires should also be matched carefully to the intended use, since the broadest product assortment does not automatically make every option equally appropriate for every WRX.

Sidewall style depends on the size and tire series you are considering. In 235/45R17, the available choices are blackwall radials. In 245/40R18, blackwall remains the most common presentation, but redline and raised white letter options are also available through the Street Pro III line. That gives 18-inch WRX owners more flexibility if appearance is part of the decision.

Sidewall style should be chosen as an appearance preference rather than as a substitute for checking fitment. The right tire still has to match the car’s wheel diameter and any rim-width requirements tied to that product. On a modern WRX, sidewall treatment can noticeably change the car’s visual character, so it makes sense to decide early whether the goal is a clean contemporary look or something more attention-grabbing.

Tire choices for the 2020 Subaru WRX include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, depending on the size. BFGoodrich and Nitto appear in both primary fitments, while M&H Racemaster and Pro-Trac are part of the 245/40R18 assortment. The available series span g-Force performance tires, NT555 G2, Street Pro III, and a drag-oriented radial.

Brand alone should not make the decision. It helps more to compare each tire within the correct WRX size and look at sidewall style, approved wheel-width range, and intended use. Someone replacing tires on a Base model has a different pool of choices than someone buying for an 18-inch Premium or Limited, so the trim-specific fitment should always lead the comparison.

A period-style 2020 Subaru WRX tire choice starts with keeping the correct trim-based size in place: 235/45R17 for Base or 245/40R18 for the upper trims. From there, the most restrained period-minded look comes from the blackwall radial options, especially in performance-oriented series that suit the WRX’s modern sport compact character without adding a retro sidewall treatment.

Appearance should still follow fitment, not override it. A tire that looks right for the era also needs to match the current wheel diameter and the product’s wheel-width requirements. Since this is a recent performance car rather than a restoration-era classic, the goal is usually an era-appropriate presentation rather than exact historical originality, making size accuracy and visual balance the most useful priorities.

On the 2020 Subaru WRX, construction does not create a bias-ply-versus-radial styling decision because the primary fitments are radial. Visual character comes more from sidewall treatment, tire series, and overall stance than from construction type. Blackwall tires maintain a more contemporary performance look, while redline or raised white letter versions on 245/40R18 add a more assertive visual statement.

That means appearance decisions should be made within the correct radial size for the car’s trim. A thoughtful choice can complement the WRX’s design without forcing an obviously mismatched look. For owners trying to preserve a stock-style presentation, keeping the proper wheel diameter and choosing a sidewall style that suits the car’s original visual era is usually more important than chasing novelty.

Yes. A 2020 Subaru WRX may no longer match its original tire setup if it has aftermarket wheels, suspension changes, altered ride height, or body modifications. Even when the car still uses 235/45R17 or 245/40R18, wheel width and overall clearance can change enough to affect which products are sensible to use. That is especially important on a performance-oriented car where wheel changes are common.

A modified WRX should be checked for wheel diameter, wheel width, and clearance at the fender and steering points before replacing tires. It also helps to compare the current tire size on the car against the trim-based fitment. A tire that matches the original size code may still be a poor choice if the wheel specifications or the suspension setup have changed significantly.

Before driving a 2020 Subaru WRX on new tires, inspect wheel condition, confirm the tire size matches the car’s actual wheel diameter, and verify proper inflation. It is also smart to check for obvious suspension or alignment issues, because uneven wear patterns from the old tires can point to problems that a new set will not solve. Lug torque and valve condition deserve attention as well.

A short initial road test helps confirm there is no rubbing, vibration, or steering interference. After that, recheck tire pressure once the car has settled into regular use. On a WRX, quick response and road feel make small setup problems easier to notice, so catching noise, pull, or clearance issues early can prevent premature wear and help the new tires perform as intended.

Tires on a 2020 Subaru WRX should be inspected regularly rather than only when tread looks low. A monthly check is a sensible routine for pressure, visible damage, and uneven wear, and the tires should also be looked over before longer drives or spirited seasonal use. Performance-oriented vehicles can reveal alignment or inflation issues quickly, so frequent visual checks are worthwhile.

Inspection should include tread condition, sidewall cuts, bulges, cracking, and signs of slow air loss. It also helps to monitor whether the wear pattern matches the car’s setup, especially if the WRX has aftermarket wheels or suspension changes. Staying ahead of those details protects both handling and tire life, and it gives you a chance to correct small problems before they turn into expensive replacements.