The 2014 Ford Trucks F-150 STX sits in the later years of the twelfth-generation F-150, a period when this truck balanced everyday usability with the broad trim, cab, and wheel combinations that made half-ton fitment less simple than it first appears. On the STX, tire choice starts with identifying the exact cab and drivetrain setup, because this model uses five primary radial sizes ranging from 17-inch to 20-inch applications. That also means the decision can shift from pure size matching to wheel confirmation, overall stance, and whether the truck is staying on a street-oriented setup or using an all-terrain option where available.
Which Tire Size Is Right for The 2014 Ford Trucks F-150 STX
The 2014 Ford Trucks F-150 STX uses five primary tire sizes, and they do not apply across every STX configuration the same way. Sizes vary by sub-model and wheel diameter, so the first step is confirming the truck's exact STX cab and drivetrain combination, then matching that to the correct 17-inch, 18-inch, or 20-inch wheel setup before comparing tire choices.
235/75R17 is a metric radial size in which 235 identifies the nominal section width in millimeters, 75 is the aspect ratio, R indicates radial construction, and 17 is the rim diameter in inches. For the 2014 Ford Trucks F-150 STX, this size belongs to specific 17-inch wheel applications rather than the full STX range. Its taller-profile metric layout suits buyers trying to stay with the proper wheel diameter and original fitment type for that configuration. Wheel verification matters here, especially on trucks that may have been upgraded to larger factory-style or aftermarket rims.
265/60R18 is a metric radial size with a 265-millimeter nominal section width, a 60-series profile, and an 18-inch rim diameter. On the 2014 Ford Trucks F-150 STX, this size is tied to certain 18-inch sub-model configurations, so it should be selected by matching the truck's actual wheel setup rather than by model name alone. This format gives the buyer an 18-inch fitment point within the STX range, distinct from both the 17-inch and 20-inch options. It is best evaluated by confirming wheel diameter first, then checking that the truck has not been altered from its original wheel package.
Fit(s): 4x2 Reg./Super Cab, 4x2 Super Crew Cab, 4x4 Reg./Super Cab, and 4x4 Super Crew Cab
Construction: Radial|Rim: 20 in
275/55R20 is a metric radial size where 275 is the nominal width in millimeters, 55 is the aspect ratio, and 20 designates a 20-inch rim. Within the 2014 Ford Trucks F-150 STX lineup, this is the shared 20-inch fitment that appears across multiple cab and drivetrain combinations. Its role is different from the 17-inch and 18-inch sizes because the wheel diameter alone changes the starting point for tire selection. Buyers considering this size should confirm that the truck is actually on the correct 20-inch wheels and that any suspension or wheel changes have not altered clearance around the fenders or steering components.
Fit(s): 4x2 Reg./Super Cab, 4x4 Reg./Super Cab, and 4x4 Super Crew Cab
Construction: Radial|Rim: 18 in
275/65R18 is a metric radial with a 275-millimeter nominal section width, a 65-series profile, and an 18-inch rim diameter. On the 2014 Ford Trucks F-150 STX, it applies to certain 18-inch setups and is also one of the sizes with an available BFGoodrich All-Terrain T/A KO2 option featuring raised white letters. That gives this size a more specialized product path than some of the other STX fitments. It is a strong size to evaluate carefully if the truck is used beyond pavement, but the actual wheel diameter and rim-width compatibility still need to match the vehicle before selection.
265/70R17 is a metric radial size with a 265-millimeter nominal section width, a 70-series profile, and a 17-inch rim diameter. For the 2014 Ford Trucks F-150 STX, this size is used on certain 17-inch applications and has available BFGoodrich All-Terrain T/A KO2 choices, including versions with different load specifications on the same rim diameter. The available products share raised white letter sidewalls and an all-terrain series character. This size deserves close attention from buyers who want to keep the truck on its correct 17-inch wheel package while also comparing load capacity and intended use.
Sub-model fitment on the 2014 Ford Trucks F-150 STX is not one-size-fits-all, because cab style, drivetrain, and wheel package affect which tire size applies. Checking the exact STX sub-model is the quickest way to avoid choosing the right tire size for the wrong wheel diameter.
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2014 Ford Trucks F-150 STX 4x2 Reg./Super Cab
This STX configuration has the widest spread of fitment choices, covering 17-inch, 18-inch, and 20-inch radial applications. Tire selection here starts with confirming the actual wheel package on the truck, then narrowing the choice to the appropriate size for its current setup.
This sub-model uses 18-inch or 20-inch radial fitments rather than the full STX size range. That makes wheel confirmation especially important, since choosing between those two sizes depends less on the body style name and more on the truck's actual rim diameter.
This 4x4 STX setup uses 17-inch, 18-inch, and 20-inch radial fitments, including sizes that suit more truck-oriented applications. Buyers should verify the wheel diameter first, then decide whether the goal is a standard replacement fitment or an all-terrain product where available.
This configuration narrows the fitment choice to 18-inch or 20-inch radial sizes. The practical decision is confirming which wheel package is on the truck now, especially if factory-style upgrades or aftermarket wheels have changed the original setup.
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 2014 Ford Trucks F-150 STX Tires for Sale
Available product choices for the 2014 Ford Trucks F-150 STX center on 265/70R17 and 275/65R18, with BFGoodrich All-Terrain T/A KO2 options in radial construction and raised white letter sidewalls. Comparing the product grid is mainly about rim-width compatibility, load specification, and which all-terrain setup best suits the truck's use.
These FAQs focus on the exact tire sizes used on the 2014 Ford Trucks F-150 STX, how they vary by sub-model and wheel diameter, and what to check when comparing radial options, appearance, and real-world truck fitment.
Tire Size & Fitment
What tire size fits a 2014 Ford Trucks F-150 STX?
The 2014 Ford Trucks F-150 STX uses five primary tire sizes: 235/75R17, 265/60R18, 275/55R20, 275/65R18, and 265/70R17. All are radial sizes, but they do not apply to every STX configuration in the same way, because cab style, drivetrain, and wheel package change the fitment.
The practical first step is matching the truck's exact STX sub-model and wheel diameter before choosing a tire. A 17-inch, 18-inch, or 20-inch setup changes the correct starting point completely, and many F-150s have seen wheel changes over time, so checking the current rim size on the truck matters as much as checking the badge.
What size rim does a 2014 Ford Trucks F-150 STX use?
A 2014 Ford Trucks F-150 STX can use 17-inch, 18-inch, or 20-inch rims, depending on the exact sub-model and tire size. The 17-inch sizes are 235/75R17 and 265/70R17, the 18-inch sizes are 265/60R18 and 275/65R18, and the 20-inch size is 275/55R20.
That makes rim confirmation one of the most important steps before replacing tires on an STX. Reading the size on the sidewall helps, but it is also smart to verify the actual wheel on the truck, especially if it has had a package change, aftermarket wheels, or a previous owner who mixed appearance upgrades with different tire sizes.
Why does the 2014 Ford Trucks F-150 STX have more than one tire size?
The STX name covers several 2014 Ford Trucks F-150 configurations, including 4x2 and 4x4 versions and different cab styles. Those combinations use different wheel packages, which is why the STX range includes five tire sizes instead of one universal fitment.
That variety means the truck cannot be matched by model name alone. Identifying the exact STX configuration narrows the choices, but checking the wheels already on the vehicle is still essential because the same sub-model family can appear with different rim diameters, and that changes the correct tire size immediately.
Choosing the Right Tire
What should I consider when choosing a tire for a 2014 Ford Trucks F-150 STX?
Start with the correct primary size for the truck's exact STX sub-model and actual wheel diameter. On this F-150 STX, the main variables are 17-inch, 18-inch, and 20-inch fitments, all in radial construction, so the right tire begins with accurate fitment rather than brand or tread preference.
After size is confirmed, compare how the truck is used and what the product specifications support. For the sizes with available products, details such as rim-width range, load specification, sidewall treatment, and all-terrain character help separate one option from another. That approach keeps the decision centered on fitment, intended use, and wheel compatibility.
What sidewall styles are available for 2014 Ford Trucks F-150 STX tires?
The available products for the 2014 Ford Trucks F-150 STX use an RWL sidewall, which means raised white letters. That sidewall treatment appears on the BFGoodrich All-Terrain T/A KO2 options offered in 265/70R17 and 275/65R18.
Sidewall style affects the truck's presentation almost as much as the wheel itself, especially on an STX with a more assertive all-terrain look. Buyers who want a more traditional truck appearance may prefer the visible white lettering, while others may simply be focused on keeping the correct size and load specification for the wheel and intended use.
What tire series are available for the 2014 Ford Trucks F-150 STX?
The available product listings for this STX point to the BFGoodrich All-Terrain T/A KO2 series in 265/70R17 and 275/65R18. That means the current product assortment shown for the truck is centered on an all-terrain radial rather than a mix of touring, highway, and off-road series.
This matters most for buyers choosing between wheel-correct replacement and intended truck use. If the F-150 STX sees mixed pavement and light off-pavement driving, an all-terrain series may be a natural fit, but the tire still needs to match the truck's exact size, approved rim-width range, and the way the truck is currently configured.
Restoration & Appearance
Which tire should I choose for a period-style 2014 Ford Trucks F-150 STX?
A period-style choice for a 2014 Ford Trucks F-150 STX starts with keeping the truck on the correct original-type size and wheel diameter for its exact sub-model. Since this STX uses modern radial fitments across 17-inch, 18-inch, and 20-inch applications, size accuracy does more for the truck's visual authenticity than chasing a mismatched tread or wheel package.
Appearance should be balanced against how the truck will actually be used. An STX kept close to its original stance usually looks most cohesive when the tire size matches the intended wheel package, while a truck wearing all-terrain rubber in 265/70R17 or 275/65R18 can lean into a more truck-focused presentation without straying from the listed fitment family.
How does tire construction affect the appearance of a restored 2014 Ford Trucks F-150 STX?
On a 2014 Ford Trucks F-150 STX, construction is straightforward because the primary fitments are radial. That means the appearance difference comes less from bias-ply-versus-radial choices and more from the actual tire size, sidewall height, wheel diameter, and whether the tire carries a more street-oriented or all-terrain visual character.
A truck restored or refreshed to keep its factory-era look usually benefits from staying with the proper STX size and wheel package first. Sidewall details also matter, and the available products shown here use raised white letters, which create a distinctly truck-style presentation. The cleanest result comes from matching the tire's look to the truck's intended stance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2014 Ford Trucks F-150 STX?
Yes. A 2014 Ford Trucks F-150 STX may have the correct size family for its sub-model, but wheel changes, altered offset, leveling kits, lifts, or suspension modifications can change how that tire fits on the truck. Even factory-range sizes become a separate fitment question once the truck no longer matches its original wheel setup.
That is why the current wheel diameter should be verified first, followed by wheel width and clearance around suspension and steering components. Looking at the tire size stamped on the sidewall is helpful, but it should be paired with a visual inspection of the truck's actual hardware before replacing anything on a modified or previously updated STX.
What should I inspect before driving a 2014 Ford Trucks F-150 STX on new tires?
Begin by confirming that the new tires match the truck's actual wheel diameter and approved fitment, then inspect the wheels for damage or bent flanges that could affect seating. It is also wise to check for uneven wear causes such as alignment issues, worn suspension parts, or clearance marks that suggest the previous tire setup was rubbing.
A road-ready inspection should also include tire pressure, lug-nut torque, and a close look at the truck's steering and suspension condition. Any F-150 STX that has been sitting, used hard, or changed from its original wheel package deserves extra attention, because a new tire can only perform properly when the supporting wheel and chassis condition are sound.
How should tires on a 2014 Ford Trucks F-150 STX be maintained?
Tires on a 2014 Ford Trucks F-150 STX should be checked regularly for pressure, tread wear, cuts, bulges, and any irregular wear pattern that could point to alignment or suspension problems. Since this truck uses several different radial sizes depending on configuration, consistent maintenance starts with knowing the exact size and load specification already on the vehicle.
Ongoing care also means watching for age-related cracking and air loss, especially on trucks that spend long periods parked between uses. Rotation practices, storage conditions, and routine inspections all matter, but so does keeping the truck on wheels that match the tire's intended rim-width range. Good maintenance preserves both tire life and predictable road behavior.
