Subaru BRZ Tires

Subaru BRZ uses two tire sizes across the years covered here: 215/45R17 and 215/40R18. The 215/45R17 size appears on 2013 through 2017 models and continues on certain 2018 through 2025 cars, while 215/40R18 appears on 2018, 2020, and 2022 through 2026 cars. The first size requires a 17-inch wheel and the second requires an 18-inch wheel.

That overlap matters because year alone does not always identify the correct tire on a later Subaru BRZ. A quick check of the wheel diameter on the car, the placard, or the existing tire sidewall will usually sort out which of the two fitments applies before you compare tread pattern or performance goals.

A 215/45R17 tire for Subaru BRZ is a modern metric radial size. The 215 is the section width in millimeters, 45 is the aspect ratio, meaning the sidewall height is 45 percent of the section width, R identifies radial construction, and 17 is the required wheel diameter in inches.

That combination gives Subaru BRZ a moderate sidewall on a 17-inch wheel, which is part of why this fitment remains popular on many cars in the range. When replacing tires, match the full size code rather than only the width, because changing the aspect ratio or wheel diameter alters both fit and driving character.

Subaru BRZ uses both 17-inch and 18-inch rim diameters across the years listed here. The 17-inch wheel fitment appears from 2013 onward and remains in use through 2025 on certain cars, while the 18-inch fitment first appears in 2018 and continues through 2026. The rim diameter is the final number in each size code: 17 in 215/45R17 and 18 in 215/40R18.

Because both rim diameters appear in overlapping years, the safest approach is to confirm the actual wheel on the specific Subaru BRZ before choosing a tire. Even within the same production year, the correct answer may depend on the wheel package fitted to the car rather than the year badge alone.

A 2018 Subaru BRZ can use either 215/45R17 or 215/40R18, so the correct size depends on which wheel package the car carries. The 215/45R17 size fits a 17-inch wheel, while 215/40R18 fits an 18-inch wheel. Both are legitimate 2018 Subaru BRZ fitments, which is why that year needs a closer check than the earlier single-size years.

Start with the wheel diameter itself, then compare the complete size shown on the current tire sidewall. If the car has aftermarket wheels, confirm that the replacement tire matches the wheel diameter and stays appropriate for the Subaru BRZ’s handling balance rather than assuming the original factory size is still in place.

The Subaru BRZ tires listed here are all blackwall designs. That applies to both available sizes, 215/45R17 and 215/40R18, and across the BFGoodrich product options shown for the model range. There are no whitewall or specialty sidewall treatments in the current selection for this application.

Blackwall styling suits the Subaru BRZ’s modern sports-coupe character and keeps the appearance consistent with contemporary performance tire design. If the car has been modified for a particular visual theme, verify that the tire’s sidewall presentation still complements the wheel choice and overall look you want to maintain.

The Subaru BRZ tire options listed here come from one brand: BFGoodrich. The available products include the g-Force Sport Comp 2, g-Force Comp 2 A/S, and g-Force Phenom T/A series, with the 17-inch size having multiple choices and the 18-inch size shown with one choice. All are radial performance-oriented tires.

That narrow brand spread means the main decision is less about comparing many manufacturers and more about selecting the size and performance character that best suits the specific Subaru BRZ. Once the wheel diameter is confirmed, you can compare whether you want a more all-season oriented option or a sport-focused fitment within the BFGoodrich range.

Subaru BRZ tire choices here include BFGoodrich g-Force Sport Comp 2, g-Force Comp 2 A/S, and g-Force Phenom T/A. The series names indicate distinct performance families within the brand, with the g-Force lineup covering multiple approaches rather than a single universal tire. All of them use radial construction and blackwall styling, but they are not identical products wearing the same size code.

That means a Subaru BRZ owner should first settle the fitment question, then choose the series that matches how the car is actually used. A car driven mainly for fair-weather back-road use may call for a different feel than one expected to handle broader street conditions, even when both cars use the same nominal tire size.

A stored Subaru BRZ should be kept in a cool, dry, dark space with the tires protected from direct sunlight, ozone sources, and large temperature swings. Clean floors and proper inflation matter because long periods of sitting can encourage flat spotting and uneven casing stress, especially on lower-profile modern performance tires like the sizes used on Subaru BRZ.

If the car will sit for an extended period, move it occasionally or place it on suitable supports so the same contact patch is not carrying the load for months at a time. Before returning a stored Subaru BRZ to regular driving, inspect the sidewalls, tread, and valve stems and bring all tires back to the correct operating pressure.

Tires on a Subaru BRZ should be inspected visually every time the car is washed or driven after sitting, and more closely at regular service intervals. Look for cracking, punctures, impact damage, irregular shoulder wear, and any difference in wear pattern from side to side. Because Subaru BRZ is a handling-focused car, even modest alignment or pressure issues can show up quickly in the way the tires wear.

A practical routine is to check pressures monthly and inspect tread and sidewalls before any longer drive or spirited use. Catching wear early helps preserve steering feel and prevents replacing a matched set prematurely because one tire was run underinflated or developed edge wear from suspension settings.

A Subaru BRZ tire should be replaced when age, cracking, hardening, puncture history, or structural damage makes continued use questionable, even if visible tread depth still appears usable. Collector and enthusiast cars often age their tires before they wear them out, and performance tires can lose their intended feel as the rubber ages. Replacement is also due when wear is uneven enough to affect handling or wet-road behavior.

Treat age as a service-life issue, not just a cosmetic one, especially if the Subaru BRZ is driven infrequently. If there is any doubt about a tire’s condition after long storage, curb impact, or repeated heat cycles, a tire professional should inspect it before the car is put back into regular road use.

The listed Subaru BRZ tires are modern radial road tires in the correct size families for the model, so they are intended for normal public-road use when they are mounted on the proper wheel diameter and kept in sound condition. The key safety point is matching 215/45R17 to 17-inch wheels and 215/40R18 to 18-inch wheels. A size mismatch is a fitment problem, not a minor variation.

Safe road use also depends on inflation, alignment, tire age, and overall vehicle condition. Subaru BRZ is sensitive to tire behavior because of its light weight and direct steering, so maintaining a properly matched set in good condition is just as important as selecting the nominally correct size.

Before driving a Subaru BRZ, check tire pressure, visible tread condition, sidewall condition, and whether all four tires are the correct size for the wheels fitted to the car. Also look for punctures, bulges, or unusual wear that could signal alignment or suspension issues. On a car with staggered-looking aftermarket wheels, confirm that the actual mounted tire size still suits Subaru BRZ requirements.

A brief pre-drive inspection pays off because Subaru BRZ communicates tire issues clearly through steering feel and braking response. If the car has been stored, driven over rough pavement, or recently had wheel work performed, spend an extra minute confirming pressures and wheel-to-tire matching before heading onto faster roads.

A Subaru BRZ should always be driven within the speed capability of the exact tires fitted, the road conditions, and the condition of the car itself. The listed tires include W-speed-rated examples in the available sizes, but safe speed on the road is never determined by the letter on the sidewall alone. Tire age, inflation, temperature, and surface conditions all matter.

For practical use, treat a fresh, correctly fitted matched set as part of the car’s overall operating envelope rather than a license to drive at the tire’s rated maximum. If a Subaru BRZ is running older tires, recently repaired wheels, or a mix of different wear levels, reduce expectations and correct those issues before any sustained high-speed driving.