The 2024 Subaru Trucks Ascent is a modern three-row family vehicle built around all-weather confidence, everyday comfort, and the versatility buyers expect from Subaru’s larger crossover platform. That makes tire fitment especially important, because the Ascent’s stance, ride quality, and road manners depend on matching the correct wheel and tire package to the specific trim. For this model year, fitment centers on two radial sizes: 245/60R18 and 245/50R20. That gives buyers a clear split between 18-inch and 20-inch applications rather than a single universal setup. The key step is confirming the exact sub-model and wheel diameter before comparing replacement tire choices.
Which Tire Size Is Right for The 2024 Subaru Trucks Ascent
The 2024 Subaru Trucks Ascent uses two primary tire sizes, and the right one depends on the specific sub-model and wheel diameter. Both are radial metric sizes, but one fits an 18-inch rim and the other fits a 20-inch rim. Before choosing a replacement tire, confirm which trim the vehicle is and check the actual wheel size on the vehicle, especially if wheels have ever been changed.
245/60R18 is a metric radial size in which 245 indicates the section width in millimeters, 60 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2024 Subaru Trucks Ascent, this size is part of the vehicle’s primary modern radial fitment and is used on 18-inch wheel applications. Its dimensions place it very close in overall height to the 20-inch fitment, but the wheel requirement is different. This is the size to evaluate when the vehicle has the correct 18-inch setup and you want to match that package properly.
245/50R20 is also a metric radial size, with a 245-millimeter section width, a 50-series profile, radial construction, and a 20-inch rim diameter. For the 2024 Subaru Trucks Ascent, this size belongs to the 20-inch wheel package used on specific sub-models rather than across the full lineup. Its lower-profile format changes the tire-to-wheel relationship compared with the 18-inch option, so wheel diameter must be confirmed before replacement. This is the size to focus on when the Ascent carries its original 20-inch wheels or a verified matching 20-inch setup.
Sub-model fitment matters on the 2024 Subaru Trucks Ascent because the lineup is split between 18-inch and 20-inch wheel packages. Tire selection starts with identifying the exact trim, since the two primary sizes are not shared across every version of the vehicle.
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2024 Subaru Trucks Ascent Base
The 2024 Subaru Trucks Ascent Base uses the 245/60R18 radial tire size. That makes replacement selection straightforward as long as the vehicle still has its 18-inch wheel setup and has not been changed to a different wheel package.
The 2024 Subaru Trucks Ascent Limited uses the 245/50R20 radial tire size. Tire selection should stay centered on verified 20-inch wheel fitment, with extra attention to matching the existing wheel diameter before comparing replacement options.
The 2024 Subaru Trucks Ascent Onyx Edition uses the 245/50R20 radial tire size. Buyers should treat it as a 20-inch fitment vehicle first, then compare tires within that size rather than assuming the 18-inch Ascent setup also applies.
The 2024 Subaru Trucks Ascent Premium uses the 245/60R18 radial tire size. For replacement planning, the main task is confirming that the vehicle remains on the proper 18-inch wheels before selecting a tire in that metric radial fitment.
The 2024 Subaru Trucks Ascent Touring uses the 245/50R20 radial tire size. That means tire choice should begin with the 20-inch wheel package, since moving between the Ascent’s two primary sizes requires more than simply choosing a different tire.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Frequently Asked Questions
Common questions for the 2024 Subaru Trucks Ascent usually center on the correct tire size by trim, the difference between the 18-inch and 20-inch fitments, and what to inspect before replacing tires on a family vehicle that may see year-round road use.
Tire Size & Fitment
What tire size fits a 2024 Subaru Trucks Ascent?
The 2024 Subaru Trucks Ascent uses two tire sizes: 245/60R18 and 245/50R20. Both are radial metric fitments, but they are not used across every trim. Base and Premium models use 245/60R18, while Limited, Onyx Edition, and Touring models use 245/50R20.
The practical issue is identifying the exact sub-model and confirming the wheel diameter already on the vehicle. An Ascent with 18-inch wheels needs the 18-inch tire size, and a 20-inch wheel package needs the 20-inch size. If the vehicle has had wheel changes, check the wheel itself before ordering replacement tires.
What size rim does a 2024 Subaru Trucks Ascent use?
A 2024 Subaru Trucks Ascent uses either an 18-inch or 20-inch rim, depending on the sub-model. The 245/60R18 tire fits an 18-inch rim, and the 245/50R20 tire fits a 20-inch rim. Both sizes are modern radial fitments, but the wheel diameter is different between the two packages.
That means rim diameter should be verified before any tire purchase, rotation planning, or replacement decision. Tire sizes with similar overall height are not interchangeable when the wheel diameter changes. Looking at the current tire sidewall and checking the actual wheel setup is especially important if the Ascent was bought used or has aftermarket wheels.
Do all 2024 Subaru Trucks Ascent sub-models use the same tire size?
No. The 2024 Subaru Trucks Ascent is split between two tire sizes by sub-model. Base and Premium use 245/60R18, while Limited, Onyx Edition, and Touring use 245/50R20. Both are radial metric sizes, but they correspond to different wheel diameters and should be treated as distinct fitments.
That split matters because replacement tire selection starts with trim identification, not just the vehicle year and model. A buyer who assumes every Ascent uses the same size can easily end up looking at the wrong tire category. Matching the trim and checking the tire sidewall on the vehicle will usually settle the question quickly.
Choosing the Right Tire
What should I consider when choosing a 245/60R18 tire for a 2024 Subaru Trucks Ascent?
Start by confirming that the 2024 Subaru Trucks Ascent actually uses the 245/60R18 size, since that fitment applies to Base and Premium models. It is a modern metric radial on an 18-inch rim, so the main selection goal is staying within that exact size and wheel-diameter requirement.
After confirming size, compare tires based on the kind of driving the Ascent sees most often, such as highway use, family hauling, or year-round daily service. It also helps to check the existing wheel condition, even wear across the current tires, and any signs that alignment or suspension issues should be corrected before installing replacements.
What should I consider when choosing a 245/50R20 tire for a 2024 Subaru Trucks Ascent?
245/50R20 is the correct fitment for 2024 Subaru Trucks Ascent Limited, Onyx Edition, and Touring models. Because it is tied to a 20-inch wheel package, the first consideration is confirming that the vehicle still has the proper 20-inch wheels and has not been changed to a different setup.
Once the wheel diameter is confirmed, focus on choosing a tire that matches the vehicle’s intended use and maintains the correct size relationship. It is also wise to inspect the current tires for uneven shoulder wear, impact damage, or signs of low-pressure use, since those conditions can point to problems that should be handled before replacement.
How do I choose between the available tires for a 2024 Subaru Trucks Ascent?
The right approach is to choose by fitment first and features second. On a 2024 Subaru Trucks Ascent, that means confirming whether the vehicle uses 245/60R18 or 245/50R20, then comparing replacement tires only within that exact size and matching wheel-diameter category.
From there, think about how the vehicle is actually used. A regularly driven family Ascent may call for different priorities than one used mainly for commuting or long highway trips. Tire age, tread wear pattern, and the condition of the other three tires should also be part of the decision, especially on an all-wheel-drive vehicle.
Restoration & Appearance
Does correct tire fitment matter for a 2024 Subaru Trucks Ascent restoration or cosmetic refresh?
Yes. Even on a newer vehicle like the 2024 Subaru Trucks Ascent, correct tire fitment matters if the goal is to preserve the intended stance, wheel-to-tire proportions, and overall appearance. The vehicle uses either 245/60R18 or 245/50R20, and each size is tied to a specific wheel diameter and trim-level presentation.
A cosmetic refresh can look off if the tire size does not match the wheel package the vehicle was built around. Before making appearance-driven changes, confirm the current trim, wheel diameter, and whether the vehicle still has its original wheel setup. That keeps visual changes grounded in the Ascent’s actual fitment rather than guesswork.
How does tire size affect the appearance of a 2024 Subaru Trucks Ascent?
Tire size changes how much sidewall is visible and how the wheel fills the opening on a 2024 Subaru Trucks Ascent. The 245/60R18 setup shows more sidewall on an 18-inch wheel, while the 245/50R20 setup pairs a lower-profile tire with a 20-inch wheel for a different visual balance.
Because the two sizes are associated with different trims, appearance decisions should begin with the actual wheel package on the vehicle. A tire can be correct in overall category but still look mismatched if the wheel diameter is wrong. Checking the full wheel-and-tire combination keeps the vehicle’s proportions consistent and intentional.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2024 Subaru Trucks Ascent?
Yes. Modifications can change tire fitment on a 2024 Subaru Trucks Ascent even when the tire size seems close to the original specification. Aftermarket wheels, different offsets, suspension changes, or body modifications can alter clearance at the fenders, suspension components, or steering range on either the 245/60R18 or 245/50R20 setup.
That is why replacement planning should include more than matching the sidewall size. Check actual wheel diameter, wheel width, and available clearance before changing tires on a modified vehicle. A stock Ascent and a modified one may not respond the same way to the same tire size, especially during turning, compression, or full-load driving.
What should I inspect before driving a 2024 Subaru Trucks Ascent on new tires?
Before putting a 2024 Subaru Trucks Ascent back into regular use on new tires, inspect the wheels for damage, confirm correct air pressure, and make sure the installed size matches the vehicle’s wheel package. It also helps to look over the valve stems, lug hardware, and the condition of the remaining tires if they are not being replaced as a full set.
A short road check is worthwhile after installation. Pay attention to vibration, pull, unusual noise, or steering changes that could point to balance, alignment, or wheel issues. On a family vehicle that may carry passengers and cargo often, catching those problems early helps protect ride quality and promotes even tire wear.
What should I check before a longer drive in a 2024 Subaru Trucks Ascent?
Before a longer drive, check tire pressure when the tires are cold, inspect tread and sidewalls for cuts or bulges, and confirm that the 2024 Subaru Trucks Ascent is riding on the correct size for its trim. Whether the vehicle uses 245/60R18 or 245/50R20, the tires should also show even wear across the tread surface.
Longer trips put more attention on issues that can go unnoticed in short local driving. Look for slow air loss, irregular wear, or signs that the suspension or alignment may need attention. It is also smart to verify that the spare and tire service equipment are present and usable before leaving on a highway trip.
