1981 Ford Trucks F-250 Ranger Lariat Tires

The 1981 Ford Trucks F-250 Ranger Lariat uses four primary tire sizes: 800-16.5, 875-16.5, 8.75R16.5, and 950-16.5. The correct one depends on the truck’s exact sub-model, including 4x2 or 4x4 layout, cab configuration, and GVWR. Some versions use only bias-ply fitments, while others include a radial size among their primary options.

That means the right starting point is the truck’s full configuration, not just the model name. Two Ranger Lariat trucks from the same year can share the same 16.5-inch wheel diameter but still call for different tire sizes. Checking the door information, current wheel setup, and the truck’s GVWR helps narrow the selection before comparing tread series or construction.

All primary tire fitments for the 1981 Ford Trucks F-250 Ranger Lariat use a 16.5-inch rim diameter. That remains consistent across the covered sizes, including 800-16.5, 875-16.5, 8.75R16.5, and 950-16.5. Even though the tire sizes vary by sub-model and GVWR, the wheel diameter stays in the same 16.5-inch family.

Rim diameter is only one part of fitment, so it should not be treated as the whole answer. Wheel width still matters, especially on sizes such as 950-16.5 where product specifications show a narrower approved range. A truck that has been changed to different wheels over time should be measured directly before a replacement tire is chosen.

More than one tire size applies because the 1981 Ford Trucks F-250 Ranger Lariat was offered in multiple working configurations. Drivetrain, cab style, bed arrangement, and GVWR all affect which tire size appears on a given truck. That is why some versions use 800-16.5 or 875-16.5, some move into 950-16.5, and some also include 8.75R16.5 radial fitment.

The practical takeaway is that matching by year and model alone is not precise enough. A buyer should identify the exact sub-model first, then confirm the wheel diameter and the tire size already associated with that truck. That approach avoids mixing lighter-duty and heavier-duty fitments that happen to share the same basic F-250 Ranger Lariat name.

8.75R16.5 is a radial tire size on the 1981 Ford Trucks F-250 Ranger Lariat. The R in the size marks radial construction, and this size appears as a primary fitment on certain sub-model and GVWR combinations. It is not simply a modern substitute for another size on this truck; it belongs to specific configurations within the Ranger Lariat range.

That distinction matters because other versions of the same truck use bias-ply sizes such as 800-16.5, 875-16.5, or 950-16.5. Construction choice should follow the exact configuration and wheel setup rather than assumption. A truck that has been changed over the years may need its current wheels and installed tire size checked before moving between radial and bias-ply selections.

The first step is determining which construction belongs to the truck’s exact sub-model. Some 1981 Ford Trucks F-250 Ranger Lariat configurations use bias-ply primary fitments only, while others include 8.75R16.5 as a primary radial option. Because both constructions appear across the model range, the choice is tied to configuration before it becomes a preference decision.

Bias-ply may appeal to owners who want a more traditional truck presentation, while a radial-equipped version should be matched to the size intended for that setup. Once the correct construction path is clear, wheel condition, wheel width, and clearance should be reviewed. That becomes even more important if the truck no longer carries its original 16.5-inch wheels or suspension height.

Start by confirming that the truck’s exact sub-model actually has a primary radial fitment associated with it, because not every 1981 Ford Trucks F-250 Ranger Lariat does. Then verify the current wheel diameter, wheel width, and the size already installed. Those checks matter because this truck spans several bias-ply sizes and one primary radial size across different configurations.

A conversion should also account for tire-to-fender clearance, steering travel, and any suspension or wheel changes made over the truck’s life. The truck may still wear 16.5-inch wheels, but that alone does not settle compatibility. Matching the radial size to the truck’s actual setup is the safest way to avoid choosing a construction change that does not suit the vehicle’s dimensions.

Begin with the exact tire size and construction that match the truck’s sub-model, since this Ranger Lariat can use several sizes and both bias-ply and radial fitments. After that, compare tire series, wheel-width compatibility where stated, and load-related specifications when they are available. Those factors matter more than choosing by appearance alone on a working-era F-250.

A lighter-duty 4x2 truck and a higher-GVWR 4x4 or Super Cab can land in different tire ranges even though they share the same model name. Once the correct fitment is confirmed, think about how the truck will be used: restoration display, light road use, or regular hauling-oriented driving. That helps narrow the most suitable tire within the proper size.

The available products for the 1981 Ford Trucks F-250 Ranger Lariat use blackwall sidewalls. That applies across the listed 800-16.5, 875-16.5, and 950-16.5 options, which are all truck-oriented tires in STA series. For a pickup of this type, blackwall presentation suits the straightforward heavy-duty look typically associated with period truck tires.

Since there is no sidewall-style spread to sort through here, the real comparison shifts to size, construction, and tire series. Buyers focused on appearance should make sure the truck’s stance and wheel setup still support the correct tire size first. Once fitment is settled, blackwall keeps the presentation consistent while the tread series shapes the overall character of the tire.

The product range for the 1981 Ford Trucks F-250 Ranger Lariat includes STA Super Transport, STA Traxion, and STA Transport Highway series, depending on tire size. Those series appear across the available bias-ply truck sizes and give buyers meaningful variety without moving outside the correct 16.5-inch truck-tire family. Series availability changes by size rather than staying identical across the whole lineup.

That means the first filter is still the truck’s exact fitment, not the series name by itself. Once the right size is confirmed, the series helps distinguish the type of truck tire you are selecting within that fitment. It is also worth checking product details such as rim-width range or load figure where shown, especially on heavier-duty 950-16.5 applications.

For a period-style 1981 Ford Trucks F-250 Ranger Lariat, the strongest starting point is the correct primary size for the exact sub-model, followed by the appropriate construction. Many versions use numeric bias-ply truck sizes such as 800-16.5, 875-16.5, or 950-16.5, and the available products are blackwall truck tires that suit a traditional heavy-duty pickup presentation.

Appearance should follow fitment, not override it. A restoration-minded truck still needs the size and wheel relationship that belongs to its drivetrain, cab style, and GVWR. If exact historical originality matters beyond a period-style look, comparing the truck against marque references, surviving factory literature, or long-time owner documentation can help refine the final tire choice.

Tire construction changes the visual character of a restored 1981 Ford Trucks F-250 Ranger Lariat because bias-ply and radial tires do not present exactly the same way. On this truck, the bias-ply sizes carry the more traditional vintage truck format, while 8.75R16.5 represents a radial fitment used on certain configurations. Construction therefore shapes both stance and overall period impression.

A buyer restoring the truck for an era-appropriate look will usually start by matching the construction tied to that specific sub-model. That does not mean one construction is universally right across the whole Ranger Lariat range. The smartest approach is to confirm the truck’s original wheel setup and intended use, then choose the construction that supports both fitment accuracy and the desired presentation.

Yes, modifications can affect tire fitment on a 1981 Ford Trucks F-250 Ranger Lariat even when the truck still uses a 16.5-inch wheel diameter. Aftermarket wheels, different wheel widths, altered ride height, suspension changes, and body adjustments can all change how a tire size sits in the wheel opening. That matters on a truck with several valid primary sizes across the model range.

A modified truck should be checked as it exists today, not only by its original configuration. Measure the installed wheels, confirm the current tire size, and look at steering and fender clearance before selecting a replacement. Those steps are especially important when moving between lighter-duty and heavier-duty size ranges or when the truck has spent years in work use.

Inspect the wheels, valve stems, lug hardware, and overall tire clearance before putting a 1981 Ford Trucks F-250 Ranger Lariat back on the road with new tires. It also makes sense to check for suspension wear, steering play, and any signs that the old tires rubbed under load or at full lock. Those issues can affect how a replacement tire behaves once installed.

After installation, confirm inflation, recheck clearance with the truck sitting on its weight, and pay attention during the first few drives. A truck that has seen wheel swaps or long storage may reveal issues only once it is back in motion. Catching those details early helps protect both the new tires and the truck’s 16.5-inch wheel setup.

Collector-use tires on a 1981 Ford Trucks F-250 Ranger Lariat should be kept properly inflated, inspected regularly for cracking, bulges, cuts, and uneven wear, and protected from long periods of heat and sun exposure. Because many vintage trucks spend more time parked than driven, age and storage condition can matter just as much as tread depth.

It helps to move the truck periodically, keep the tires clean, and monitor for slow air loss before any road use. A longer drive deserves an extra look at sidewalls, wheel condition, and general tire appearance, especially on older 16.5-inch truck setups. Regular inspection is the best habit for a Ranger Lariat that comes out only occasionally.