The 2021 Kia Trucks Seltos arrived as a compact crossover aimed at buyers who wanted city-friendly size without giving up a more planted stance and available turbocharged character. Its trim range gives this model two distinct tire paths, separating the standard 17-inch-wheel setups from the sportier 18-inch-wheel turbo applications. On this vehicle, primary fitment is fully radial, with 215/55R17 used on EX, LX, and S trims, while S Turbo and SX Turbo use 235/45R18. Available choices stay focused on blackwall performance-oriented radial lines from BFGoodrich, so the key decision is matching the correct trim and wheel diameter, then choosing the tire series that best suits everyday driving needs and overall vehicle character.
Which Tire Size Is Right for The 2021 Kia Trucks Seltos
Two tire sizes apply to the 2021 Kia Trucks Seltos, and the right one depends first on the exact sub-model and wheel diameter. EX, LX, and S trims use a 17-inch radial fitment, while S Turbo and SX Turbo move to an 18-inch radial size. Before comparing tire series, confirm which trim the vehicle is and check that the wheels still match the original diameter.
215/55R17 is a metric radial size in which 215 identifies the section width in millimeters, 55 is the aspect ratio, R marks radial construction, and 17 is the wheel diameter in inches. On the 2021 Kia Trucks Seltos, this size is used on the EX, LX, and S trims, making it the fitment for the non-turbo 17-inch-wheel configurations. Available choices in this size include BFGoodrich blackwall tires in the g-Force Comp 2 AS and g-Force Phenom T/A series. This is the size to evaluate when the vehicle retains its 17-inch wheel setup and you want to compare tire series within that fitment.
235/45R18 is a metric radial size with a 235-millimeter section width, a 45-series profile, radial construction, and an 18-inch rim diameter. On the 2021 Kia Trucks Seltos, this size belongs to the S Turbo and SX Turbo trims, so it is tied to the turbo models equipped with 18-inch wheels. BFGoodrich offers blackwall choices here across g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A lines. This fitment is the one to compare when the vehicle has the larger turbo-model wheel package and you want to stay with the correct 18-inch sizing.
Sub-model fitment matters on the 2021 Kia Trucks Seltos because tire size changes with trim and wheel diameter. The non-turbo EX, LX, and S share one fitment, while the S Turbo and SX Turbo use a different 18-inch radial size.
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2021 Kia Trucks Seltos EX
The 2021 Kia Trucks Seltos EX uses the 17-inch radial fitment shared with the LX and S trims. Tire selection here centers on staying with the correct wheel diameter and comparing the available BFGoodrich blackwall series in that size.
The 2021 Kia Trucks Seltos LX uses the same 17-inch radial tire size as the EX and S. That keeps fitment straightforward, so the main choice becomes selecting the tire series that matches the vehicle’s intended road use and existing wheel setup.
The 2021 Kia Trucks Seltos S shares the 17-inch radial fitment used on the EX and LX. Buyers should confirm that the vehicle still has its 17-inch wheels, then compare the available blackwall performance-oriented options within that size.
The 2021 Kia Trucks Seltos S Turbo moves to the 18-inch radial fitment rather than the 17-inch size used on other trims. That makes wheel-diameter confirmation especially important before choosing among the available BFGoodrich tire series in this size.
The 2021 Kia Trucks Seltos SX Turbo uses the same 18-inch radial tire size as the S Turbo. Tire selection is less about multiple fitments and more about choosing the right series while keeping the proper 18-inch wheel match.
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.
Best 2021 Kia Trucks Seltos Tires for Sale
Available 2021 Kia Trucks Seltos tire choices focus on BFGoodrich radial blackwall products in the 215/55R17 and 235/45R18 sizes. The main differences across the product grid are tire series, wheel-width compatibility within each size, and a few specification differences such as load and weight.
Common 2021 Kia Trucks Seltos tire questions usually come down to trim-specific sizing, 17-inch versus 18-inch wheel fitment, and how to compare the available BFGoodrich radial tire series for everyday road use.
Tire Size & Fitment
What tire size fits a 2021 Kia Trucks Seltos?
The 2021 Kia Trucks Seltos uses two tire sizes, depending on trim. EX, LX, and S models use 215/55R17, while S Turbo and SX Turbo models use 235/45R18. Both are radial fitments, but they are tied to different wheel diameters and trim levels rather than being interchangeable choices for the same setup.
The practical first step is confirming the exact sub-model and checking the wheel diameter currently on the vehicle. A Seltos with replacement wheels may no longer match its original trim-based fitment, so size selection should always follow the actual 17-inch or 18-inch wheel on the vehicle.
What size rim does a 2021 Kia Trucks Seltos use?
A 2021 Kia Trucks Seltos uses either a 17-inch or 18-inch rim, depending on trim. The 215/55R17 fitment is built for a 17-inch wheel, and the 235/45R18 fitment is built for an 18-inch wheel. The rim diameter is built into the tire size itself, so that number must match exactly.
Wheel diameter should be confirmed before comparing tire options, especially if the vehicle has had wheels changed since new. Rim width also matters once the correct diameter is confirmed, because the available 17-inch and 18-inch tires each have their own approved wheel-width ranges.
Do all 2021 Kia Trucks Seltos sub-models use the same tire size?
No, 2021 Kia Trucks Seltos sub-models do not all use the same tire size. EX, LX, and S trims share 215/55R17, while the S Turbo and SX Turbo use 235/45R18. The split follows trim and wheel package, so there are two distinct fitment groups within the same model year.
That means tire selection starts with the exact trim, not just the model name. It is also smart to verify the tire placard and the wheels currently on the vehicle, because aftermarket changes can blur the original trim-based fitment and lead to choosing the wrong diameter.
Choosing the Right Tire
What should I consider when choosing a 2021 Kia Trucks Seltos tire?
Start with the correct trim-specific size: 215/55R17 for EX, LX, and S, or 235/45R18 for S Turbo and SX Turbo. After size and wheel diameter are confirmed, compare radial tire series, wheel-width compatibility, and any specification details that matter for the way the vehicle is actually driven.
A useful comparison includes the tire’s approved rim-width range, sidewall style, and any load figure shown with inflation pressure. It also helps to think about whether the Seltos is mainly used for commuting, longer highway trips, or a more responsive everyday feel within the available product choices.
What sidewall styles are available for 2021 Kia Trucks Seltos tires?
The available 2021 Kia Trucks Seltos tires in these fitments use a blackwall sidewall style. That keeps the appearance clean and modern, and it also means the choice between products is driven more by tire series and sizing details than by decorative sidewall treatment.
Since sidewall appearance stays consistent, the more important comparisons are the correct trim-based size and the product line itself. Buyers choosing between 17-inch and 18-inch fitments should focus on proper wheel match first, then compare the available BFGoodrich options within the right size.
What tire series are available for the 2021 Kia Trucks Seltos?
The available tire series for the 2021 Kia Trucks Seltos include BFGoodrich g-Force Comp 2 AS, g-Force Phenom T/A, and, in 235/45R18, g-Force Sport Comp 2. The 215/55R17 fitment is offered in g-Force Comp 2 AS and g-Force Phenom T/A, while the 18-inch size adds one more series choice.
That series spread matters because the 17-inch and 18-inch fitments do not have identical product overlap. Once the correct size is confirmed, compare each series by its wheel-width specification and other visible product details rather than assuming the same options exist across both Seltos tire sizes.
Restoration & Appearance
Which tire should I choose for a period-style 2021 Kia Trucks Seltos?
A period-style approach for a 2021 Kia Trucks Seltos begins with keeping the correct trim-based size and wheel diameter rather than changing to a different format. Since the available options here are modern radial blackwall tires, the closest visual match comes from selecting the proper 215/55R17 or 235/45R18 fitment for the vehicle’s original configuration.
Appearance on a newer vehicle like the Seltos is shaped more by correct proportions than by vintage-style sidewall treatments. A buyer focused on preserving the model’s intended look should confirm trim, wheel size, and overall stance first, then compare tire series within the proper size.
Does correct tire fitment matter for a 2021 Kia Trucks Seltos restoration or preservation project?
Yes, correct tire fitment matters because the 2021 Kia Trucks Seltos uses two trim-specific sizes tied to different wheel diameters. Keeping the right 17-inch or 18-inch setup helps preserve the vehicle’s intended proportions and avoids visual mismatch between tire sidewall height, wheel size, and trim presentation.
Fitment accuracy also affects practical details beyond appearance. A preservation-minded owner should verify the actual wheels on the vehicle, confirm the trim, and compare the chosen tire’s wheel-width requirements so the finished setup looks appropriate and remains compatible with the existing package.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2021 Kia Trucks Seltos?
Yes, modifications can affect tire fitment on a 2021 Kia Trucks Seltos. Wheel changes, suspension alterations, lowering, or different offsets can all change the relationship between the tire, fender opening, and steering clearance. That matters on this model because its original fitment already varies between 17-inch and 18-inch wheel packages.
A modified Seltos should be checked by actual wheel diameter and width rather than by trim name alone. Clearance at full steering lock, suspension travel, and the tire’s approved rim-width range are more useful checks than assuming the factory trim-based size still matches the current setup.
What should I inspect before driving a 2021 Kia Trucks Seltos on new tires?
Before driving a 2021 Kia Trucks Seltos on new tires, confirm the size matches the vehicle’s trim and wheel diameter, then inspect inflation pressure, valve stems, and wheel condition. It is also wise to look for uneven wear patterns, suspension issues, or alignment problems that may have affected the previous tires.
A short road test should include checking for vibration, pulling, or any sign of rubbing during turns. Rechecking pressure after installation and making sure the tire and wheel combination matches the correct 17-inch or 18-inch setup helps avoid problems that are really fitment issues rather than tire defects.
How often should tires on a 2021 Kia Trucks Seltos be inspected?
Tires on a 2021 Kia Trucks Seltos should be inspected regularly for tread wear, cuts, punctures, sidewall damage, and air loss. Monthly pressure checks are a sensible routine, and the tires should also be looked over before longer highway trips or after contact with potholes, curbs, or road debris.
Routine inspection matters even more if the vehicle sees mixed city and highway use or has different wheels than it originally carried. Paying attention to wear pattern changes can also reveal alignment or suspension concerns early, helping the correct 215/55R17 or 235/45R18 fitment deliver more consistent service.
