2020 Genesis marked the brand’s push from luxury newcomer to serious sport-luxury contender, with the G70, G80, and G90 covering everything from compact performance sedan duty to full-size flagship comfort. That spread means tire fitment is not one-size-fits-all across the year, even though every application uses modern radial construction. Across these three models, eight tire sizes appear, with 18-inch and 19-inch fitments split by model and, in some cases, by front and rear position on staggered setups. For 2020 Genesis vehicles, the first step is confirming your exact model and whether your car uses an 18-inch package or a 19-inch staggered combination before narrowing down tire choices.
Which Tire Size Is Right for Your 2020 Genesis
Eight tire sizes appear across 2020 Genesis vehicles, and they vary by model rather than being shared across the full range. Every size is a radial, so the main decision is confirming the correct model and rim diameter first, then matching the exact front or rear size where staggered fitments are used. Understanding that distinction before choosing a product saves time and ensures the right match.
Year(s): 2020|Fit(s): G70|Construction: Radial|Rim: 18 in
225/45R18 is a metric radial size with a 225-millimeter section width, 45-series aspect ratio, and fitment for an 18-inch wheel. This G70-specific size is available from BFGoodrich and Nitto in Blackwall form, with W-rated products reaching 112 mph. It suits a 2020 Genesis G70 equipped with the 18-inch package and keeps the car in its intended modern sport-sedan sizing format.
Year(s): 2020|Fit(s): G70|Construction: Radial|Rim: 19 in
225/40R19 is a metric radial size with a 225-millimeter section width, 40-series aspect ratio, and fitment for a 19-inch wheel. This size is specific to the 2020 Genesis G70 and comes from BFGoodrich in Blackwall styling, with W-rated products reaching 112 mph. It is the front-size fitment to confirm on a 19-inch G70 before choosing the matching rear size.
Year(s): 2020|Fit(s): G70|Construction: Radial|Rim: 19 in
255/35R19 is a metric radial size with a 255-millimeter section width, 35-series aspect ratio, and fitment for a 19-inch wheel. This G70-specific size is available in Blackwall form from BFGoodrich, with speed ratings that vary by product: W up to 112 mph and Y up to 186 mph. It is the matching rear fitment for a staggered 19-inch 2020 Genesis G70 and should be paired with the correct 225/40R19 front size.
Year(s): 2020|Fit(s): G80|Construction: Radial|Rim: 18 in
245/45R18 is a metric radial size with a 245-millimeter section width, 45-series aspect ratio, and fitment for an 18-inch wheel. This size is specific to the 2020 Genesis G80 and is available from BFGoodrich and Nitto in Blackwall styling, with speed ratings that vary by product: W up to 112 mph and Y up to 186 mph. It is the correct choice for a G80 running the 18-inch wheel package and should be matched to that setup rather than a 19-inch alternative.
Year(s): 2020|Fit(s): G80|Construction: Radial|Rim: 19 in
245/40R19 is a metric radial size with a 245-millimeter section width, 40-series aspect ratio, and fitment for a 19-inch wheel. This G80-specific size comes from BFGoodrich in Blackwall form, with speed ratings that vary by product: W up to 112 mph and Y up to 186 mph. It serves as the front-size fitment on a 19-inch staggered 2020 Genesis G80 and should be chosen only when paired with the corresponding rear size.
Year(s): 2020|Fit(s): G80|Construction: Radial|Rim: 19 in
275/35R19 is a metric radial size with a 275-millimeter section width, 35-series aspect ratio, and fitment for a 19-inch wheel. This size is specific to the 2020 Genesis G80 and is available from BFGoodrich and Nitto in Blackwall styling, with speed ratings that vary by product: W up to 112 mph and Y up to 186 mph. It is the rear-size companion to 245/40R19 on staggered 19-inch G80 fitments.
Year(s): 2020|Fit(s): G90|Construction: Radial|Rim: 19 in
245/45R19 is a metric radial size with a 245-millimeter section width, 45-series aspect ratio, and fitment for a 19-inch wheel. This G90-specific size is available from BFGoodrich and Nitto in Blackwall form, with speed ratings that vary by product: W up to 112 mph and Y up to 186 mph. It is the front-size fitment to confirm on a 2020 Genesis G90, where preserving the correct staggered relationship matters as much as the wheel diameter.
Year(s): 2020|Fit(s): G90|Construction: Radial|Rim: 19 in
275/40R19 is a metric radial size with a 275-millimeter section width, 40-series aspect ratio, and fitment for a 19-inch wheel. This size is specific to the 2020 Genesis G90 and comes from BFGoodrich and Nitto in Blackwall styling, with speed ratings that vary by product: W up to 112 mph and Y up to 186 mph. It is the matching rear fitment for the G90’s 19-inch staggered setup and should be selected with the correct 245/45R19 front size.
Three Genesis models are covered for 2020: the G70, G80, and G90. Tire sizing varies by model, so identifying the car itself is essential before choosing a size, especially where 19-inch front and rear fitments differ. Select a model below for model-specific fitment history and products.
2020 Genesis G70
The 2020 Genesis G70 was the brand’s compact sport sedan, aimed at drivers who wanted sharper handling and a more athletic character than the larger Genesis sedans. Its tires mount on either 18-inch wheels or a staggered 19-inch setup, depending on configuration, so the exact wheel package matters before moving any further.
The 2020 Genesis G80 served as the brand’s midsize luxury sedan, balancing comfort, understated styling, and strong road presence. It uses either an 18-inch fitment or a staggered 19-inch combination, making it important to distinguish between the standard wheel package and the larger sport-oriented arrangement.
The 2020 Genesis G90 was the full-size flagship, built around quiet cruising, long-wheelbase luxury feel, and executive-sedan proportions. Its tires mount on a staggered 19-inch setup, so the front and rear sizes need to stay in their proper positions rather than being treated as interchangeable.
Twenty-seven products are available across eight tire sizes for 2020 Genesis vehicles. 225/45R18, 245/45R18, 275/35R19, 245/45R19, and 275/40R19 come from BFGoodrich and Nitto; 225/40R19 and 245/40R19 come from BFGoodrich; every size is radial with Blackwall styling. Confirm your exact size first, since speed ratings vary within several sizes.
These FAQs sort out the model-specific sizing used across the 2020 Genesis G70, G80, and G90, along with rim width ranges, speed ratings, sidewall style availability, and the upkeep habits that matter on modern luxury performance sedans.
Size Basics & Fitment
What tire sizes fit 2020 Genesis vehicles?
2020 Genesis vehicles use eight sizes across three models. The G70 uses 225/45R18, or a staggered 19-inch setup with 225/40R19 front and 255/35R19 rear. The G80 uses 245/45R18, or a staggered 19-inch setup with 245/40R19 front and 275/35R19 rear. The G90 uses a staggered 19-inch setup with 245/45R19 front and 275/40R19 rear. Rim width ranges where available run from 7.0 to 8.5 inches for 225/45R18, 7.5 to 9 inches for 225/40R19, 8.5 to 10 inches for 255/35R19, 7.5 to 9 inches for 245/45R18, 8 to 9.5 inches for 245/40R19, 9 to 11 inches for 275/35R19, 7.5 to 9 inches for 245/45R19, and 9 to 11 inches for 275/40R19.
The practical takeaway is that year and make alone are not enough on a 2020 Genesis. You need to confirm whether you have a G70, G80, or G90, then determine whether the car is on an 18-inch package or a 19-inch staggered package. On staggered cars, front and rear sizes are different by design, so matching one axle while overlooking the other can upset appearance, clearance, and intended proportions.
What does 225/45R18 mean on a 2020 Genesis tire?
On a 2020 Genesis, 225/45R18 is a metric radial size. The 225 is the section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. That size is used on the G70 with an 18-inch package, and its compatible wheel width range runs from 7.0 to 8.5 inches across the available products.
That code matters because it tells you both physical fit and the kind of tire you are dealing with. A 225/45R18 should be treated as an exact size, not as a general approximation for any 18-inch Genesis wheel. If your G70 carries a 19-inch staggered setup instead, the correct front and rear sizes are different, so the 18-inch size would not be the right starting point.
Do all 2020 Genesis models use the same tire size?
No, 2020 Genesis models do not share one common tire size. The G70, G80, and G90 each have their own size group, and several of those applications use staggered front and rear fitments. Even where two models share a 19-inch wheel diameter, the actual tire dimensions differ, such as 245/40R19 and 275/35R19 on the G80 versus 245/45R19 and 275/40R19 on the G90.
That distinction is especially important if you are replacing only two tires or trying to verify what is already on the car. A G80 and G90 may both wear 19-inch wheels, but the tire profile and width are not the same. Checking the model badge and the current tire sidewall before ordering is the fastest way to avoid mixing sizes that look close at a glance but serve different applications.
Buying the Right Tire
What sidewall styles are available for 2020 Genesis tires?
2020 Genesis tire options in these sizes use Blackwall sidewalls throughout. That applies across the G70, G80, and G90 sizes, whether the car uses an 18-inch package or a 19-inch staggered setup. The overall look is consistent with the clean, contemporary appearance expected on a modern luxury sport sedan rather than a vintage-style whitewall or period decorative sidewall treatment.
For most owners, that means the sidewall decision is simple and the real choice shifts to exact size, brand, and speed rating. If appearance matters, Blackwall is also the easiest way to preserve the understated factory-era look these cars were designed around. Once the sidewall style is settled, focus on matching the correct axle position on staggered cars and confirming the wheel-width range against your existing wheels.
What brands make tires for 2020 Genesis vehicles?
BFGoodrich and Nitto cover the 2020 Genesis range here, although not every size has both brands. BFGoodrich appears across all eight sizes, while Nitto is available in 225/45R18, 255/35R19, 245/45R18, 275/35R19, 245/45R19, and 275/40R19. Every option is a radial and every sidewall style is Blackwall, keeping the selection centered on modern road use rather than vintage-style presentation.
That brand spread gives owners some room to compare within the exact size their car requires. A G70 owner on 225/40R19, for example, is choosing within BFGoodrich offerings, while a G80 owner on 245/45R18 has both BFGoodrich and Nitto available. Start with the exact size on your car, then compare speed rating, wheel-width compatibility, and series character rather than trying to move across sizes to reach a different brand.
What is the difference between BFGoodrich g-Force COMP-2 A/S and BFGoodrich g-Force Phenom T/A for the 2020 Genesis?
On several 2020 Genesis sizes, BFGoodrich offers both g-Force COMP-2 A/S and g-Force Phenom T/A versions, and the clearest difference in the available specifications is speed rating and, in some sizes, load figure. In 255/35R19, for example, the COMP-2 A/S carries a W rating up to 112 mph while the Phenom T/A carries a Y rating up to 186 mph; both fit 19-inch wheels, but the Phenom T/A also shows a 1,565-pound maximum load at 50 psi. Similar W-versus-Y splits appear in 245/45R18, 245/40R19, 245/45R19, 275/35R19, and 275/40R19.
That means the choice is less about basic fitment and more about selecting the product character you want within the same size. Owners who want to stay closest to the exact size already on the car can compare those series without changing wheel diameter or axle fitment. It is smart to confirm the speed rating on the sidewall and compare wheel-width compatibility before deciding, especially on staggered G70, G80, and G90 applications.
Fitting & Setup
What rim width do 2020 Genesis tires require?
Rim width requirements on 2020 Genesis vehicles vary by size. 225/45R18 fits 7.0 to 8.5 inches, 225/40R19 fits 7.5 to 9 inches, 255/35R19 fits 8.5 to 10 inches, 245/45R18 fits 7.5 to 9 inches, 245/40R19 fits 8 to 9.5 inches, 275/35R19 fits 9 to 11 inches, 245/45R19 fits 7.5 to 9 inches, and 275/40R19 generally fits 9 to 11 inches, with one product shown as 9.0 to 9.5 inches.
Those ranges are important because matching tire size to wheel diameter alone is not enough. A rear G80 or G90 wheel needs the proper width to support a 275-section tire correctly, and a front wheel may require a narrower band. If your car has aftermarket wheels, verify the wheel width stamped on the rim before selecting a tire, especially on staggered 19-inch packages.
Do 2020 Genesis tires require inner tubes?
The 2020 Genesis sizes here are modern radial fitments and the size markings do not show tube-type designations such as TT. They are presented in standard modern radial form, including ZR-coded performance sizes, which aligns with tubeless passenger-car use on contemporary wheels. No size in this group is framed as an antique or tube-type application.
In practice, most owners will be dealing with standard tubeless wheel-and-tire service rather than separate tube fitment decisions. Even so, it is worth confirming the exact sidewall marking on the tire you choose and inspecting the wheel condition, bead seat, and valve stem when mounting. That is especially useful if the car has been modified from its original wheel package or has seen curb damage.
Maintenance, Storage & Longevity
How should I store a 2020 Genesis when the tires are fitted?
A stored 2020 Genesis should be kept out of direct sunlight and away from ozone-producing equipment such as electric motors, welders, battery chargers, and air compressors. Keep the car on a dry surface, maintain proper inflation, and move it periodically so one section of the tread does not carry the load for months at a time. Modern radials resist flat-spotting better than older bias-ply tires, but long static storage can still affect ride quality and casing shape.
If the car will sit for an extended season, clean the tires, avoid petroleum-based dressings, and consider tire cradles or light support stands that reduce concentrated load without leaving the suspension fully unloaded. That routine helps preserve both appearance and road manners. On a luxury sedan like a Genesis, preventing storage-related vibration is just as important as avoiding obvious sidewall aging.
How long do tires on a 2020 Genesis typically last?
On a 2020 Genesis, tire age matters at least as much as tread depth. Collector, weekend, and low-mileage cars often keep tread for years, but rubber still hardens with time. A sensible rule is to begin close evaluation around five to seven years of age and to treat ten years as a strong replacement point, regardless of remaining tread, using the DOT date code on the tire sidewall to confirm the tire’s age.
That approach is especially important on cars that are driven infrequently or only in fair weather. A Genesis that looks freshly shod can still be riding on old rubber if the tires were installed years ago and only covered a few thousand miles. Age, visible cracking, ride harshness, and repeated air loss all deserve more weight than mileage alone when deciding whether to replace a set.
How often should tires on a 2020 Genesis be inspected?
Tires on a 2020 Genesis should be inspected before every drive and given a closer look before any extended trip. Check inflation, tread wear, cuts, punctures, bulges, and any cracking near the sidewall or shoulder. On staggered cars, compare front and rear tires separately because the sizes differ and wear patterns can differ as well, especially on performance-oriented sedans such as the G70 and G80.
A regular inspection routine catches problems before they become expensive or inconvenient. It also helps confirm that replacement tires were mounted in the correct axle positions and that no irregular wear is developing from alignment or suspension issues. If you notice feathering, inner-edge wear, or one rear tire wearing faster than its mate, have the car checked before putting more miles on the set.
Safety & Road Use
Are 2020 Genesis tires safe for highway driving?
Yes, the 2020 Genesis sizes here are modern radial performance tires intended for contemporary road use, and their speed ratings support normal highway driving with substantial margin. W-rated products are rated to 112 mph, and several sizes also offer Y-rated products rated to 186 mph, including 255/35R19, 245/45R18, 245/40R19, 275/35R19, 245/45R19, and 275/40R19. Those ratings exceed ordinary U.S. highway conditions by a wide margin.
Real-world safety depends on more than the tire’s letter rating, though. Inflation, age, alignment, and the overall mechanical condition of the car matter just as much, particularly on heavier luxury sedans like the G80 and G90. If the goal is confident road use, confirm the correct size for the axle, inspect the tires carefully, and avoid assuming that a high speed rating cancels out age or wear.
What inflation pressure should I use for 2020 Genesis tires?
Inflation pressure on a 2020 Genesis should follow the vehicle manufacturer’s recommendation for the specific model and wheel package, while also respecting the tire’s own maximum-load information where it appears. Several sizes show maximum load and pressure figures such as 1,521 pounds at 50 psi for some 225/45R18 products, 1,764 pounds at 50 psi for some 245/45R18 products, 1,874 pounds at 50 psi for some 245/45R19 products, and 2,039 pounds at 50 psi for some 275/40R19 products. Those figures are tire capacity limits, not everyday cold-inflation targets for all driving conditions.
The safest approach is to use the door-jamb or owner’s-manual pressure recommendation as your baseline, then make sure the tire you choose meets the car’s needs in load and speed. Do not transfer one pressure figure from one Genesis size to another, especially on staggered cars where front and rear dimensions differ. If the car has aftermarket wheels or non-original tire series, double-check manufacturer guidance before setting pressures.
What should I check before taking a 2020 Genesis on a longer drive?
Before a longer drive in a 2020 Genesis, inspect each tire for cracks, cuts, punctures, bulges, uneven wear, and proper cold inflation. Confirm that the front and rear sizes are correct on staggered G70, G80, and G90 setups, and check the spare if the car carries one. Look over the valve stems, make sure the tread area is free of embedded debris, and verify that none of the tires are aging out even if they still have ample tread.
Tire inspection should be part of a broader pre-trip check on any modern luxury sedan. Brake feel, fluid levels, battery condition, and suspension behavior all matter, but tires are the one component always in contact with the road. Spending a few minutes on that check is especially worthwhile if the car is driven seasonally, has sat for a while, or recently received replacement tires on only one axle.
