The 1981 Toyota Trucks Pickup sits at an interesting point in compact truck history, when Toyota’s small pickups had already earned a reputation for durability and everyday usefulness while trim levels and driveline choices created very different personalities. Tire fitment on this model is not one-size-fits-all, with 14-inch and 15-inch applications appearing across 4x2, 4x4, DLX, and SR5 versions in both bias-ply and radial construction. That means the real choice is not just picking a tire brand, but confirming the exact sub-model and wheel setup first. From truck-style blackwalls to whitewalls, redlines, raised white letters, and radial alternatives, the right selection depends on appearance goals, road use, and staying within the proper fitment range.
Which Tire Size Is Right for The 1981 Toyota Trucks Pickup
Six primary tire sizes are used on the 1981 Toyota Trucks Pickup, and they vary by sub-model, construction, and rim diameter. Some versions use 14-inch tires, while the 4x4 applications move to 15-inch sizes, so the first step is confirming the exact sub-model and actual wheel diameter on the truck. Once that is settled, the next decision is whether to stay with the original-style construction or compare the available radial and appearance-oriented alternatives in the correct size.
A 700-14 numeric bias-ply size uses the first number to indicate nominal section width in inches, with the final number identifying a 14-inch rim. On the 1981 Toyota Trucks Pickup, this is a bias-ply fitment used on certain 4x2 applications, giving the truck a distinctly traditional small-pickup tire profile. Available choices include BFGoodrich options in Silvertown Classic Bias Ply with blackwall and narrow whitewall sidewall treatments. This size makes the most sense for an owner preserving an earlier bias-ply look and feel while staying with the proper 14-inch fitment.
H78-15 is a vintage alphanumeric bias-ply size in which the letter and series identify the tire’s size class and profile family, while 15 marks the rim diameter. For the 1981 Toyota Trucks Pickup, it appears on 4x4 versions and represents a traditional bias-ply truck fitment on a 15-inch wheel. Product choices include Coker Classic bias-ply whitewall options as well as STA Traxion blackwall truck-style construction. This is the size to evaluate when a 4x4 owner wants to keep a period-style bias-ply presentation rather than move toward a radial alternative.
HR78-15 uses the vintage alphanumeric format, with the R indicating radial construction and the final number identifying a 15-inch rim. On the 1981 Toyota Trucks Pickup, this is a primary 15-inch radial fitment associated with 4x4 versions, making it important to distinguish from the similarly sized H78-15 bias-ply option. The key decision here is construction choice rather than sidewall variety alone, since this size represents a radial path within the truck’s original fitment family. It is the right size to examine when a 4x4 owner wants radial construction while remaining in the proper 15-inch category.
E78-14 is a vintage alphanumeric bias-ply size, where the letter and series identify the tire class and profile family and 14 identifies the wheel diameter. On the 1981 Toyota Trucks Pickup, this 14-inch bias-ply fitment appears on the DLX 4x2 and carries a more traditional replacement profile than later metric radial sizing. Available products span Coker Classic wide whitewall options along with STA Traxion and STA Transport Highway blackwall truck-oriented choices. This size is worth choosing carefully when the goal is to match the truck’s trim-specific fitment and preserve a vintage bias-ply appearance.
A 205/70R14 metric radial uses 205 to indicate section width in millimeters, 70 as the aspect ratio, R for radial construction, and 14 for rim diameter. On the 1981 Toyota Trucks Pickup, this is a 14-inch radial fitment used on the SR5 4x2, giving that sub-model a more modern sizing format than the vintage bias-ply and alphanumeric options elsewhere in the range. Available choices include blackwall, narrow whitewall, redline, dual-redline, and raised white letter styles from brands such as Maxxis, BFGoodrich, and Michelin. This size is especially useful for owners balancing SR5 fitment, appearance preferences, and radial road manners.
ER78-14 is an alphanumeric radial size, with the R identifying radial construction and 14 denoting the rim diameter. On the 1981 Toyota Trucks Pickup, it appears as another 14-inch radial fitment for the SR5 4x2, so it should not be confused with the bias-ply E78-14 used elsewhere in the lineup. The main value of this size is in preserving a vintage radial sizing convention rather than switching to a later metric format. It is the one to examine closely when the truck already wears the correct 14-inch wheels and the owner wants an SR5 radial fitment with an older-style size designation.
Sub-model fitment on the 1981 Toyota Trucks Pickup varies significantly, so tire selection depends on identifying the exact trim and whether the truck is 4x2 or 4x4. That matters because both construction type and rim diameter change across the lineup, especially between 14-inch 4x2 applications and 15-inch 4x4 applications.
1
1981 Toyota Trucks Pickup 4x2
The 1981 Toyota Trucks Pickup 4x2 uses the 700-14 bias-ply size on a 14-inch rim. That points the tire search toward traditional numeric bias-ply options and makes sidewall style an important appearance choice once the wheel size has been confirmed.
The 1981 Toyota Trucks Pickup 4x4 uses 15-inch tires and can be equipped with either H78-15 bias-ply or HR78-15 radial fitment. That makes construction choice especially important, since a buyer may be deciding between a more traditional bias-ply presentation and a radial setup within the same wheel diameter.
The 1981 Toyota Trucks Pickup DLX 4x2 uses the E78-14 bias-ply size on a 14-inch wheel. Tire selection here centers on staying with the proper alphanumeric bias-ply fitment and choosing between more passenger-style whitewall presentation or truck-oriented blackwall offerings.
The 1981 Toyota Trucks Pickup DLX 4x4 shares the 15-inch H78-15 bias-ply and HR78-15 radial fitment pattern. The practical decision is confirming whether the truck is being kept in a period-style bias-ply configuration or evaluated for a radial option within the correct 15-inch size family.
The 1981 Toyota Trucks Pickup SR5 4x2 uses 14-inch radial sizes, either 205/70R14 or ER78-14. That means the owner should verify which radial sizing convention matches the truck’s current setup before comparing sidewall treatments and available product styles.
The 1981 Toyota Trucks Pickup SR5 4x4 follows the 15-inch 4x4 fitment pattern with H78-15 bias-ply and HR78-15 radial options. Choosing tires for this sub-model starts with construction and wheel confirmation, then moves to whether the truck’s appearance calls for classic bias-ply styling or a radial approach.
Bias-Ply to Radial Tire Conversion for the 1981 Toyota Trucks Pickup
Three primary bias-ply sizes on the 1981 Toyota Trucks Pickup have radial-equivalent options. For 700-14, the alternatives are 185R14 as an 80-series metric radial, P195/75R14 as a 75-series P-metric radial, and P205/70R14 as a 70-series P-metric radial, with a recommended rim-width range of 4 to 6 inches. H78-15 can be compared with 215R15, P225/75R15, P235/70R15, and the 760R15 bias-look radial, with a 6 to 8 inch rim-width range. E78-14 uses the same 185R14, P195/75R14, and P205/70R14 progression as a radial alternative, with a 4 to 6 inch rim-width range and normal wheel and clearance checks still required.
Modern Radial Equivalents
185R14
Equivalent 80-series Metric Radial (700-14)
P195/75R14
Equivalent P-metric 75-series Radial (700-14)
P205/70R14
Equivalent P-metric 70-series Radial (700-14)
215R15
Equivalent 80-series Metric Radial (H78-15)
P225/75R15
Equivalent P-metric 75-series Radial (H78-15)
P235/70R15
Equivalent P-metric 70-series Radial (H78-15)
760R15
Bias-look Radial Equivalent (H78-15)
185R14
Equivalent 80-series Metric Radial (E78-14)
P195/75R14
Equivalent P-metric 75-series Radial (E78-14)
P205/70R14
Equivalent P-metric 70-series Radial (E78-14)
Important Considerations When Replacing Bias Ply With Radial
Compare overall diameter and section width carefully to ensure proper fit.
Verify recommended rim range (4-6 in) and load needs match your vehicle specifications.
Check fender clearance, steering clearance, and stance before installation.
Consider suspension condition and intended road use when choosing equivalents.
Important Fitment Notes
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 1981 Toyota Trucks Pickup Tires for Sale
Available choices for the 1981 Toyota Trucks Pickup cover BFGoodrich, Coker Classic, STA, Maxxis, and Michelin across bias-ply and radial construction. Depending on size, the product grid includes blackwall, narrow whitewall, wide whitewall, redline, dual-redline, and raised white letter styles, along with classic passenger and truck-oriented tire series.
These FAQs focus on the tire questions that matter most for a 1981 Toyota Trucks Pickup, including sub-model fitment, 14-inch versus 15-inch wheels, bias-ply and radial choices, radial equivalents, appearance options, and the checks worth making before regular road use.
Tire Size & Fitment
What tire size fits a 1981 Toyota Trucks Pickup?
A 1981 Toyota Trucks Pickup can use 700-14, H78-15, HR78-15, E78-14, 205/70R14, or ER78-14, depending on the exact sub-model. The 4x2, DLX 4x2, SR5 4x2, and the 4x4 versions do not all share the same tire size, and both bias-ply and radial constructions appear in the lineup.
The most important step is matching the tire to the truck’s exact trim and driveline, then confirming whether it has 14-inch or 15-inch wheels. A swapped wheel set, an older replacement tire, or a modified suspension can easily blur the original fitment, so checking the truck itself before choosing a replacement prevents moving into the wrong size family.
What size rim does a 1981 Toyota Trucks Pickup use?
The 1981 Toyota Trucks Pickup uses either 14-inch or 15-inch rims, depending on the sub-model and tire size. Sizes 700-14, E78-14, 205/70R14, and ER78-14 are 14-inch applications, while H78-15 and HR78-15 are 15-inch applications.
Rim diameter should be confirmed before looking at brands or sidewall style because a 14-inch tire and a 15-inch tire are not interchangeable. Wheel width also matters when comparing products or considering a radial equivalent, especially on trucks that may have had aftermarket wheels installed long after their original factory configuration.
Why does the 1981 Toyota Trucks Pickup have more than one tire size?
The 1981 Toyota Trucks Pickup has more than one tire size because fitment changes across 4x2, 4x4, DLX, and SR5 versions. Some trims use 14-inch bias-ply tires, some use 14-inch radial tires, and the 4x4 models move into 15-inch sizing with both bias-ply and radial options.
That mix means tire selection is tied to configuration, not just model year and make. Owners should identify the exact sub-model, verify the wheel diameter currently on the truck, and make sure the replacement tire matches the intended construction type and appearance, especially if the truck has been restored, modified, or converted from one wheel setup to another.
Bias-Ply & Radial Options
Is H78-15 a bias-ply or radial tire for the 1981 Toyota Trucks Pickup?
H78-15 is a bias-ply tire size on the 1981 Toyota Trucks Pickup. It is used on certain 4x4 applications, while HR78-15 is the radial version within the same 15-inch fitment family.
That distinction matters because the wheel diameter may stay the same while the tire construction changes. Anyone comparing H78-15 with HR78-15 or a radial equivalent should verify wheel width, overall fit on the truck, and the type of ride and appearance desired, rather than assuming every 15-inch option behaves or presents the same way.
What radial tire sizes are equivalent to H78-15?
Radial equivalents for H78-15 include 215R15 as an 80-series metric radial, P225/75R15 as a 75-series P-metric radial, P235/70R15 as a 70-series P-metric radial, and 760R15 as a bias-look radial. The recommended rim-width range associated with these equivalents is 6 to 8 inches.
Those options give a 1981 Toyota Trucks Pickup owner several radial sizing conventions to compare, from a more traditional metric radial profile to a lower-profile P-metric alternative and a bias-look radial presentation. Even with the same 15-inch rim diameter, wheel width, tire dimensions, steering clearance, and suspension condition still need to be checked before making the switch.
Should I use bias-ply or radial tires on a 1981 Toyota Trucks Pickup?
Either can be correct for a 1981 Toyota Trucks Pickup, depending on the sub-model and the tire size being matched. This truck was fitted with both bias-ply and radial primary sizes, so the right answer starts with the exact version of the pickup and whether the goal is preserving its original fitment style or moving to a radial equivalent where one exists.
Bias-ply tires tend to suit a more traditional restoration-oriented presentation, while radial choices may appeal to owners prioritizing a different driving feel. The decision should be made after confirming wheel diameter, wheel width, and the truck’s actual setup, especially on older pickups that may have had replacement wheels, suspension work, or mixed tire types installed over time.
Choosing the Right Tire
What should I consider when choosing a tire for a 1981 Toyota Trucks Pickup?
Start with the exact sub-model, because a 1981 Toyota Trucks Pickup can use six different primary tire sizes across 14-inch and 15-inch wheels. After size and wheel diameter are confirmed, the main considerations become construction type, appearance, and whether the truck is being kept in a bias-ply style or matched to an available radial fitment or radial equivalent.
From there, compare the details that actually separate one tire from another, such as blackwall versus whitewall styling, passenger-style versus truck-oriented series, and the rim-width range attached to the product. Load capacity and the truck’s intended use also matter, particularly if the pickup sees regular driving, carries weight, or has been altered from stock wheel and suspension dimensions.
What sidewall styles are available for 1981 Toyota Trucks Pickup tires?
Sidewall choices for the 1981 Toyota Trucks Pickup include blackwall, narrow whitewall, wide whitewall, redline, dual-redline, and raised white letter, depending on the tire size selected. Those styles do not appear in every size, so the correct fitment needs to be settled first before narrowing the look.
Appearance can change the personality of a truck as much as construction type, especially on a restored or lightly customized pickup. A traditional 4x2 may suit a simpler blackwall or whitewall presentation, while an SR5 owner may be drawn to redlines or raised white letters, but the visual choice still has to stay inside the correct size and wheel range.
What brands offer tires for the 1981 Toyota Trucks Pickup?
Depending on size, tires for the 1981 Toyota Trucks Pickup are available from BFGoodrich, Coker Classic, STA, Maxxis, and Michelin. Brand choice varies with the fitment, so a 14-inch 4x2 tire search will not necessarily present the same options as a 15-inch 4x4 or an SR5 radial application.
The practical way to compare brands is to start with the exact tire size and then look at construction, sidewall treatment, tire series, and wheel compatibility. That approach keeps the decision focused on the truck’s real fitment needs instead of selecting a brand first and then trying to force a tire into a size or style that does not match the application.
Restoration & Appearance
Which tire should I choose for a period-style 1981 Toyota Trucks Pickup?
A period-style 1981 Toyota Trucks Pickup usually starts with the proper primary size for the exact sub-model, then narrows to the correct construction family. That could mean a numeric or alphanumeric bias-ply size such as 700-14, E78-14, or H78-15, or a vintage-style radial format like HR78-15 or ER78-14 where that construction belongs.
The visual result also depends on sidewall treatment, since some sizes are available in blackwall, whitewall, or more specialized styles. Owners pursuing exact historical authenticity should compare the truck’s current restoration goals with period photos, marque references, or original vehicle documentation, because a correct size alone does not automatically settle the right appearance choice.
How does tire construction affect the appearance of a restored 1981 Toyota Trucks Pickup?
Tire construction changes the look of a restored 1981 Toyota Trucks Pickup as much as the sidewall style does. Bias-ply tires tend to preserve a more traditional vintage-truck presentation in sizes like 700-14, E78-14, and H78-15, while radial sizes such as HR78-15, ER78-14, and 205/70R14 can give the truck a later or more modern visual character.
That visual shift matters on a compact pickup where tire profile is easy to notice. An owner restoring the truck around a period-style appearance may want to keep the proper construction family, while someone focused on road use may compare radial alternatives more seriously, provided the wheel size, wheel width, and overall fit on the truck are still carefully checked.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1981 Toyota Trucks Pickup?
Yes, modifications can affect tire fitment on a 1981 Toyota Trucks Pickup, especially because the truck already spans both 14-inch and 15-inch fitments from the factory. Aftermarket wheels, changes in wheel width, altered offset, lifted or lowered suspension, and body or steering changes can all change which tire size works safely on the truck.
That is why the current setup matters as much as the original sub-model fitment. A truck that started life with 700-14 or E78-14 may now wear a different wheel package, and a 4x4 may have been altered for stance or utility, so clearance through steering travel and suspension movement should be checked before mounting replacement tires.
What should I inspect before driving a 1981 Toyota Trucks Pickup on new tires?
Before driving a 1981 Toyota Trucks Pickup on new tires, inspect the wheels for correct diameter and width, confirm the tires are mounted in the proper size, and check inflation, lug torque, valve stems, and visible clearance around the fenders and suspension. It is also smart to look over steering components, shocks, springs, and alignment condition on an older truck.
A short, careful road test helps reveal rubbing, pull, vibration, or unusual steering feel before the truck goes on a longer trip. Collector and hobby trucks often sit for long periods, so it is worth rechecking air pressure after the first drive and making sure the spare, if carried, is also in usable condition.
How should tires on a collector 1981 Toyota Trucks Pickup be maintained?
Tires on a collector 1981 Toyota Trucks Pickup should be maintained with regular pressure checks, visual inspections, and periodic movement of the truck so the tires are not left supporting weight in one position for long periods. Sidewall cracking, tread separation, bulges, cuts, and slow air loss deserve attention even when the pickup is driven only occasionally.
Storage conditions matter just as much as mileage on an older collector truck. Keeping the pickup away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires, and it is wise to inspect them before each road outing because a tire can age out or deteriorate cosmetically long before the tread appears worn.
