2019 Subaru WRX Tires

A 2019 Subaru WRX uses one of two radial tire sizes: 235/45R17 or 245/40R18. The Base model uses 235/45R17, while the Limited, Premium, and Series.Gray use 245/40R18. Both are modern metric radial sizes, but they are tied to different wheel diameters and should not be treated as interchangeable just because they belong to the same model line.

The practical step is to confirm the exact sub-model and then verify the wheel size currently on the car. A WRX that has been fitted with aftermarket wheels or a different trim’s wheel package may no longer match its original configuration, so the tire decision should begin at the wheel before comparing brands or tread types.

The 2019 Subaru WRX uses either a 17-inch or 18-inch rim, depending on sub-model. The Base model pairs with a 17-inch tire fitment, while Limited, Premium, and Series.Gray models use an 18-inch fitment. That rim diameter difference is built directly into the tire size, so it affects which tire category even belongs on the car.

Checking the actual wheel is important, especially on used WRXs that may have been modified. A tire marked for a 17-inch wheel cannot be mounted on an 18-inch rim, and the reverse is also true. Once rim diameter is confirmed, the next step is comparing the tire’s approved rim-width range and intended use.

No, the 2019 Subaru WRX does not use one tire size across every sub-model. The Base uses 235/45R17, while the Limited, Premium, and Series.Gray use 245/40R18. That means the WRX line is straightforward once the trim is known, but there is still a real fitment split within the model year.

This matters because the difference is not just a small size variation; it also changes wheel diameter. A buyer who starts with the wrong trim assumption can end up comparing the wrong products entirely. Matching the tire to the sub-model and actual wheel package is the right starting point before looking at sidewall style, tire series, or performance intent.

Start with the correct size for the car’s trim and wheel diameter: 235/45R17 for the Base or 245/40R18 for Limited, Premium, and Series.Gray. From there, compare radial construction details such as rim-width compatibility, tire series, load figures where shown, and whether the tire is aimed more at general street use or a specialized application.

The right choice depends on how the WRX is actually used. A stock daily-driven car may call for a different tire character than a weekend car built around visual style or occasional strip use. It also helps to check whether the car still has its intended wheels, because an altered setup can narrow the appropriate product range quickly.

Blackwall is the main sidewall style available for the 2019 Subaru WRX, and it appears across both 235/45R17 and 245/40R18 fitments. In 245/40R18, there are also redline and RWL, or raised white letter, options through the Pro-Trac Street Pro III series. That gives the 18-inch fitment more appearance variety than the 17-inch size.

Sidewall choice affects the car’s presentation more than its basic fitment, provided the tire remains in the correct size. A blackwall keeps a modern understated look, while redline and raised white letter treatments create a more stylized visual statement. On a WRX, the cleaner choice or the bolder one usually comes down to the car’s overall theme.

Available brands for the 2019 Subaru WRX include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. BFGoodrich and Nitto appear in both key sizes, while M&H Racemaster and Pro-Trac are part of the 245/40R18 selection. The available series include g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, NT555 G2, Drag Radial, and Street Pro III.

Brand choice should be filtered through the correct tire size first, then the tire’s intended role. Some options emphasize mainstream street use, some lean into visual style, and some are much more specialized. Comparing rim-width guidance, sidewall treatment, and overall vehicle purpose usually tells more than the brand name alone.

A period-style 2019 Subaru WRX usually starts with keeping the correct trim-based tire size and wheel diameter intact. That means 235/45R17 for a Base model or 245/40R18 for Limited, Premium, and Series.Gray. Since this is a modern performance sedan, the visual decision is less about vintage construction and more about whether the tire complements a stock-looking or era-themed build.

Blackwall choices preserve the most contemporary factory-inspired appearance, while some 245/40R18 options add redline or raised white letter styling for a more customized presentation. Buyers chasing exact originality should compare the vehicle against Subaru-specific references and original-delivery documentation, because period-style and exact as-delivered appearance are not always the same thing.

On a 2019 Subaru WRX, construction is straightforward because the primary fitments are radial tires. That means the appearance difference comes less from bias-ply versus radial and more from sidewall style, tread character, and how closely the wheel-and-tire package matches the car’s original visual balance. For this model year, the tire’s profile and sidewall treatment do most of the styling work.

A blackwall radial tends to keep the car looking closest to a clean, modern stock-inspired WRX. Redline or raised white letter versions in 245/40R18 create a more deliberate custom look and can change the personality of the car quickly. Owners restoring one for authentic presentation should verify what belongs on that exact trim before prioritizing appearance alone.

Yes, modifications can affect tire fitment on a 2019 Subaru WRX even when the tire size sounds close to stock. Aftermarket wheels, different wheel widths, suspension lowering, alignment changes, and body modifications can all change how a 235/45R17 or 245/40R18 tire sits and clears the car. That becomes especially important on a platform that is often customized.

A WRX with non-stock wheels should be checked for actual rim diameter, wheel width, and clearance at full steering lock and suspension movement. It also helps to confirm that the chosen tire matches the wheel’s approved width range. A fitment that works on one modified WRX should not be assumed correct for another car with different hardware.

Before driving a 2019 Subaru WRX on new tires, inspect wheel condition, confirm the tires match the correct size for the trim, and verify proper inflation. The tires should also be checked for any shipping damage, bead seating issues, or visible irregularities. On a performance-oriented car, even small mismatches in wheel setup or air pressure can affect how the car responds.

A careful road-use check also includes looking at suspension condition, alignment wear patterns, and clearance around struts, fenders, and inner liners. After the first miles, it is smart to recheck inflation and look for any rubbing or uneven contact marks. That kind of early inspection can catch setup issues before they become tire wear problems.

Before a longer drive, a 2019 Subaru WRX should have tire pressure checked cold, tread and sidewalls inspected, and the wheel-and-tire package reviewed for damage or unusual wear. Any signs of cuts, bulges, cracking, punctures, or persistent air loss deserve attention first. On a car with sporty handling, consistency across all four tires is especially important.

It also helps to confirm that the car is still running the intended size for its trim and that no recent suspension or wheel change has created a clearance issue. A quick inspection around the inside shoulders and near the fender edges can reveal problems early. Longer trips are easier on the tires when the setup is verified before departure.