2023 Polestar Tire Fitment Guide

2023 Polestar vehicles use three tire sizes: 245/45R19, 245/40R20, and 245/35R21. All three apply to the 2023 Polestar 2, and each size corresponds to a different wheel diameter: 19, 20, or 21 inches. Rim width guidance is available for two of those sizes, with 245/45R19 fitting 7.5- to 9-inch rims and 245/40R20 fitting 8- to 9.5-inch rims.

That means a 2023 Polestar buyer should start by checking the actual wheel diameter already on the car, not just the year and make. The sizes are not interchangeable across the same wheel, because each one is built around a different rim diameter. Once the wheel size is confirmed, the tire choice becomes much simpler.

On a 2023 Polestar, 245/40R20 means the tire is 245 millimeters wide, uses a 40-series aspect ratio, has radial construction, and mounts on a 20-inch wheel. That code follows modern metric sizing and is common on late-model performance-oriented cars. Within the 2023 Polestar range, this size belongs to Polestar 2 applications equipped with 20-inch wheels.

Reading the code correctly matters because every part of it affects fitment. A 245/40R20 cannot replace a 245/45R19 or 245/35R21 unless the wheel itself changes with it. If your goal is to keep the factory wheel package intact, match the complete size code on the current tire or confirm the wheel diameter from the car before selecting a replacement.

No. The 2023 Polestar range covered here consists of the Polestar 2, but that single model still uses three different tire sizes: 245/45R19, 245/40R20, and 245/35R21. The variation is tied to wheel diameter rather than a second model line, so two 2023 Polestar 2 cars may require different tires if they were delivered with different wheel packages.

That distinction is important because year and make alone are not enough to choose the correct tire for a 2023 Polestar. The quickest way to narrow it down is to check the current sidewall marking or measure the wheel diameter directly. Once that is confirmed, you can compare the products that match that exact size instead of sorting through all three possibilities.

2023 Polestar tires in 245/45R19 are available in Blackwall styling, while 245/40R20 is available in both Blackwall and RWL form. RWL means raised white letters, which creates a more overtly performance-oriented visual statement than a plain black sidewall. The 245/35R21 size appears in the fitment range as well, though sidewall style variety is not the same across every size.

For most 2023 Polestar owners, Blackwall styling will align more naturally with the car’s contemporary, minimalist appearance. An RWL tire can appeal to drivers who want a more expressive look on a 20-inch wheel package. Sidewall appearance does not change the basic fitment rules, so style should be chosen only after confirming the correct size for the wheel.

2023 Polestar fitments are covered by BFGoodrich, Nitto, and Pro-Trac across the available product range. The 245/40R20 size is available from BFGoodrich, Nitto, and Pro-Trac, while 245/45R19 is available from BFGoodrich and Nitto. All of those choices are radial tires aimed at modern road use rather than vintage-style specialty construction.

Brand choice becomes a secondary filter once the wheel diameter is confirmed. Some owners will focus on keeping a uniform brand across all replacements, while others will compare sidewall styling or speed rating within the correct size. Since 2023 Polestar uses a modern EV platform, the right approach is to match the exact size first and then compare the character of the available tire lines.

For 2023 Polestar fitments, both BFGoodrich g-Force Comp 2 A/S and g-Force Phenom T/A appear in 245/40R20 and 245/45R19 sizes with Blackwall styling and radial construction. The g-Force Phenom T/A carries a Y speed rating in both sizes, while the g-Force Comp 2 A/S carries a W speed rating. The Phenom T/A also includes stated load figures of 1,709 pounds at 50 psi in 245/40R20 and 1,874 pounds at 50 psi in 245/45R19.

That makes the comparison more about specification detail than basic fitment, because both series fit the same wheel diameters within their respective sizes. A buyer comparing the two should look closely at the exact speed-rating letter, the published load figure where available, and the size needed for the car. Keeping the comparison inside one size prevents mixing up product attributes across different wheel packages.

Rim width guidance for 2023 Polestar varies by tire size. The 245/45R19 size fits 7.5- to 9-inch rims, while the 245/40R20 size fits 8- to 9.5-inch rims. The 245/35R21 fitment belongs to a 21-inch wheel package, so wheel diameter still has to match even when a width range is not the main concern being checked first.

This matters because a tire can have the correct diameter and still be mismatched to the wheel if the rim is outside the approved width range. Before choosing a replacement, confirm both the wheel diameter and the actual wheel width stamped on the wheel or verified by a trusted installer. That extra step helps preserve intended tire shape, response, and clearance.

2023 Polestar fitments are modern radial sizes, and the available products do not use tube-type markings that would suggest an inner-tube requirement. That places these tires in the tubeless category for normal late-model wheel use. Nothing in the available 19- and 20-inch product range suggests the tube-type setup more commonly associated with much older collector vehicles.

For a 2023 Polestar owner, the practical focus is less about tubes and more about making sure the wheel is in good condition, the valve stem is appropriate, and the tire is mounted in the exact size the car requires. If the car has aftermarket wheels, confirm that the wheel design and valve hardware remain suitable for tubeless radial service before installation.

A 2023 Polestar should be stored on clean, properly inflated tires in a cool, dry space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Even modern radials age faster when they sit under load for long periods in heat or intense UV exposure. Moving the car slightly from time to time can also help prevent one section of the tread from carrying the load continuously.

That advice is especially useful for EVs that may spend long stretches parked between regular use. If the car will remain stationary for an extended period, keeping inflation correct and occasionally rolling the car can help preserve tire shape and casing condition. Storage habits are often as important to longevity as mileage on a low-use premium vehicle.

Tire life on a 2023 Polestar should be judged by age and condition as much as tread depth. A good rule is to begin careful evaluation around five to seven years from the date code and to treat about ten years as a serious replacement threshold even if the tread still looks usable. Heat cycles, storage conditions, alignment, and driving style all affect aging.

That matters because many enthusiast-owned or secondary-use vehicles do not wear tires out in the traditional mileage sense. A 2023 Polestar owner should check the DOT date code on every tire and inspect for hardening, cracking, irregular wear, or impact damage well before the tread reaches its limit. Calendar age is often the deciding factor on low-mileage cars.

Tires on a 2023 Polestar should be inspected before every drive and given a closer once-over before any longer trip. Look for cuts, bulges, embedded objects, sidewall cracking, uneven wear, and pressure loss, especially if the car has been parked for a while. On a modern radial setup like this one, small issues can remain unnoticed until they affect ride quality or stability.

Frequent inspection helps catch age-related or impact-related problems before they turn into a roadside interruption. A pressure check with a reliable gauge, plus a quick visual look at the sidewalls and tread shoulders, is usually enough for routine use. Before a highway run, it is also smart to inspect the spare or mobility equipment the car depends on.

Yes, the available 2023 Polestar tire products are modern radials with W and Y speed ratings in the 19- and 20-inch sizes. A W rating corresponds to 168 mph, and a Y rating corresponds to 186+ mph, which places them well above normal U.S. highway speeds. For ordinary road use, the tire’s speed capability is unlikely to be the limiting factor on a properly maintained 2023 Polestar.

Real-world highway safety depends just as much on inflation, alignment, tread condition, impact damage, and the overall condition of the vehicle. A higher speed-rating letter does not override the need for regular inspection or responsible driving. The most important step is choosing the exact size that matches the wheel and then maintaining it correctly.

Inflation pressure for a 2023 Polestar should follow the vehicle manufacturer’s recommendation for the exact wheel-and-tire package, while also respecting the tire’s own maximum load-and-pressure information where that is published. In 245/40R20, one available tire carries 1,709 pounds at 50 psi, and in 245/45R19, one available tire carries 1,874 pounds at 50 psi. Those figures are tire capacity references, not a blanket instruction to run every Polestar 2 at 50 psi.

The safest approach is to start with the pressure placard or owner’s manual for the specific 2023 Polestar configuration, then compare that recommendation with the tire manufacturer’s information for the exact tire you choose. Pressure should never be copied from one size to another just because the section width is the same. Wheel diameter, sidewall height, and tire construction all affect the final recommendation.

Before a longer drive in a 2023 Polestar, inspect all four tires for cuts, bulges, cracking, uneven wear, and any object lodged in the tread. Confirm cold inflation pressure, look at the valve stems, and make sure each tire matches the wheel diameter it is mounted on. It is also wise to check the condition of the spare or tire-repair equipment that comes with the car.

That tire check should be part of a broader pre-trip routine that includes brakes, suspension condition, alignment feel, and battery or charging readiness. Even a very new-seeming tire can become a weak point if it has suffered pothole damage or long periods of underinflation. A few minutes of inspection before departure can prevent the most common tire-related interruptions.