Genesis G90 Tires

Genesis G90 uses six sizes across its 2017 to 2026 production run. From 2017 through 2022, the fitment pair is 245/45R19 front and 275/40R19 rear, both for 19-inch wheels. From 2023 through 2026, one package uses 245/45R20 front and 275/40R20 rear on 20-inch wheels, while another uses 245/40R21 front and 275/35R21 rear on 21-inch wheels.

The practical point is that Genesis G90 does not use one universal size across all years. Earlier cars and later cars differ by wheel diameter, and later cars may have either a 20-inch or 21-inch staggered package. Check the wheel itself and confirm both the front and rear sizes before replacing anything, because matching only one axle or only the model year can lead to the wrong selection.

A 2023 Genesis G90 has four listed sizes because that model year appears with two different staggered wheel packages. One package uses 245/45R20 front and 275/40R20 rear, while the other uses 245/40R21 front and 275/35R21 rear. The split is a wheel-diameter split rather than four interchangeable tires for one car.

That means the correct approach is to identify which complete package is on the car now. If the wheels are 20-inch, stay with the 20-inch front and rear pair; if the wheels are 21-inch, stay with the 21-inch pair. Do not mix the 20-inch front size with the 21-inch rear size, and do not assume every 2023 Genesis G90 left with the same wheel diameter.

Genesis G90 uses three rim diameters across the years covered here: 19 inches, 20 inches, and 21 inches. The 2017 through 2022 Genesis G90 uses 19-inch front and rear fitments. Beginning in 2023, Genesis G90 appears with either a 20-inch staggered package or a 21-inch staggered package, depending on the specific configuration.

Wheel diameter is the first fitment point to verify because it determines which tire family you can use at all. A 19-inch tire will not fit a 20-inch or 21-inch wheel, and the later 20-inch and 21-inch packages are not interchangeable with each other. Read the tire sidewall on the car, inspect the wheel, and confirm front and rear diameters before narrowing the choice further.

A 2024 Genesis G90 uses one of two staggered size pairs: 245/45R20 with 275/40R20, or 245/40R21 with 275/35R21. The model year alone does not settle the question because both packages appear within the same year range. The front and rear sizes must be matched as a set to the wheel diameter already on the car.

Start by reading the sidewall on the existing front and rear tires and checking the wheel diameter directly. Once the diameter is confirmed, keep the same front-to-rear relationship rather than selecting by section width alone. This is especially important on Genesis G90 because the car uses staggered fitments, so front and rear tires are different sizes even within the same wheel package.

Genesis G90 tire offerings here are primarily blackwall, with selected 20-inch sizes also available in redline and RWL sidewall styles. The 245/45R20 and 275/40R20 sizes include those alternate sidewall treatments, while the 19-inch sizes shown are blackwall only. That means style choice depends partly on which wheel package the car uses.

For most Genesis G90 owners seeking a factory-like modern appearance, blackwall is the most natural visual match. Redline and raised white letter styles can create a more custom look, but they should be chosen intentionally because they change the car’s presentation. If appearance matters as much as fitment, confirm both the size and the sidewall style before making a final selection.

Genesis G90 tires in these sizes are available from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. BFGoodrich appears across several 19-inch and 20-inch fitments, Nitto covers both 19-inch and 20-inch applications, Pro-Trac appears in selected 20-inch sizes, and M&H Racemaster appears in 275/40R20. Brand availability varies by exact size rather than by model year alone.

That matters because a brand you prefer for an earlier 19-inch Genesis G90 may not be the same brand mix you will see on a later 20-inch or 21-inch package. Narrow the search by the exact front or rear size first, then compare the brands available in that specific size. This keeps you from assuming all Genesis G90 fitments share the same brand options.

Genesis G90 tires here appear in several radial series, including g-Force Sport Comp 2, g-Force Comp 2 AS, Nitto NT555 G2, g-Force Phenom T/A, Street Pro III, and Drag Radial. Those series reflect different performance intentions, from all-season-oriented road use to more aggressive street performance, custom-style sidewall presentation, and a drag-focused rear application in 275/40R20.

The important takeaway is to match the series to how the Genesis G90 is actually used, not just to the size. A touring-driven luxury sedan benefits from a different character than a car chosen for appearance or occasional straight-line performance use. Once size and wheel diameter are settled, compare series names carefully so the tire’s intended behavior aligns with the way the car is driven.

A stored Genesis G90 should be kept in a cool, dry, dark space with clean tires and the car parked away from direct sunlight, ozone sources, and large temperature swings. Modern radial tires age more slowly when they are protected from heat and ultraviolet exposure. If the car will sit for extended periods, maintaining proper inflation and moving it occasionally helps reduce flat spotting.

For a full-size luxury sedan like Genesis G90, tire condition can change even when mileage stays low. Check pressures before storage and again before returning the car to service, especially if the car sits through a season. If long-term storage is routine, some owners also use stands or periodic repositioning to reduce static load on one section of the tire.

Tires on a Genesis G90 should be inspected at regular intervals even if the car is not driven often. Look for uneven wear, sidewall cuts, weather checking, punctures, bulges, and any signs that the front and rear staggered sizes are wearing differently. Pressure should also be checked routinely because underinflation and overinflation can affect both ride quality and tire life.

A practical habit is to inspect the Genesis G90 before any longer drive and at least monthly during normal use. Because this model uses staggered front and rear fitments, wear patterns may not look identical from axle to axle. Spotting those changes early can help you address alignment, inflation, or suspension issues before they turn into a full set of prematurely worn tires.

Genesis G90 tires should be replaced when age, cracking, structural damage, repeated air loss, impact damage, or irregular wear raises concern, even if the tread still appears usable. Tread depth is only one part of tire condition. A tire can look acceptable from a distance and still be past its best service life because of aging or internal stress.

For a low-mileage Genesis G90, age-related inspection is especially important because luxury cars are often driven less than their tire wear would suggest. If the car has spent long periods parked, have the tires reviewed carefully for sidewall and casing condition before relying on them for regular road use. Replacement decisions should consider age, condition, and intended use together rather than tread alone.

Modern radial tires in the correct Genesis G90 size and wheel diameter are suitable for public-road use when they are in sound condition and matched properly to the car’s front and rear fitments. Safety depends on more than the size code alone. The tire must also be free of age-related damage, correctly inflated, and installed on the proper rim diameter.

The key for Genesis G90 owners is to avoid treating all listed sizes as interchangeable. A car on 19-inch wheels needs its 19-inch staggered pair, while later cars need either the 20-inch or 21-inch package. Before regular road driving, confirm condition, inflation, and the correct front-to-rear combination so the sedan keeps the balance and manners expected of a flagship luxury model.

Before driving a Genesis G90, check tire pressure, visible sidewall condition, tread wear, and whether the front and rear tires match the car’s intended staggered setup. Also confirm that the wheel diameter and tire size correspond, especially on 2023 through 2026 cars where both 20-inch and 21-inch packages appear. Any vibration, pull, or recent impact should prompt a closer inspection.

That pre-drive check matters because Genesis G90 combines a large sedan footprint with performance-oriented tire sizing. A pressure issue or mismatched size can affect ride, stability, and steering feel more than many owners expect. Taking a few minutes to verify the basics before longer trips is one of the simplest ways to protect both the tires and the driving character of the car.

A Genesis G90 should always be driven within the limits of the exact tire installed, with attention to its size, condition, and service rating. The available fitments here are modern radial performance tires, but age, wear, inflation, and intended use still govern safe operation. An older or damaged tire should not be treated as if it offers the same margin as a fresh one in comparable size.

In practical terms, appropriate speed for Genesis G90 begins with sound condition and proper matching of the staggered setup, not with maximum performance expectations. If the car is fitted with specialty-oriented tires, such as a drag-focused rear application, use should reflect that tire’s purpose. Smooth, conservative operation is always wise until you are certain of tire age, condition, and suitability for the way the car will be driven.