1991 Nissan Trucks Tire Fitment Guide

1991 Nissan Trucks vehicles use five sizes across two model lines: 195/75R14 and 215/75R14 for the D21 only, plus 215/75R15, 235/75R15, and 31X10.50R15 for both the D21 and Pathfinder. The 14-inch sizes mount on 14-inch wheels, while the other three sizes mount on 15-inch wheels. Rim width guidance appears across several products, ranging from 5.00 to 7.50 inches for the 14-inch sizes, 5.5 to 7.5 inches for 215/75R15, 6.0 to 8.5 inches for 235/75R15, and 7.0 to 9.0 inches for 31X10.50R15.

That means the first step is identifying whether your truck or SUV uses a 14-inch or 15-inch wheel, not simply choosing by year and make. D21 owners especially should verify what is on the vehicle now, because the pickup spans both diameters. Pathfinder owners can narrow the search faster, since all three Pathfinder fitments stay within the 15-inch group.

On a 1991 Nissan Trucks tire, 31X10.50R15 means the tire is about 31 inches tall overall, about 10.50 inches wide in nominal section width, built in radial construction, and designed for a 15-inch rim. That format differs from modern metric sizing because the first number refers to overall diameter rather than section width in millimeters. In this application, 31X10.50R15 appears on both the D21 and Pathfinder and is paired with a 15-inch wheel.

The practical effect is a taller, more truck-oriented fitment than the metric 15-inch sizes. Owners often gravitate to this format when they want a more aggressive stance or an all-terrain tread pattern, but it still needs to match the wheel width and overall vehicle setup. Checking clearance at the fenders, suspension, and steering stops is wise before moving into a taller size.

No. The 1991 Nissan Trucks D21 uses five sizes across the year range, including two 14-inch fitments that do not apply to the Pathfinder. The 1991 Nissan Trucks Pathfinder shares only the 15-inch sizes: 215/75R15, 235/75R15, and 31X10.50R15. All five sizes are radial, but they are not interchangeable across the full lineup because wheel diameter changes between the 14-inch and 15-inch groups.

That makes the model name an essential part of the search, especially for D21 pickups. A truck with 14-inch wheels needs one of the two 14-inch metric sizes, while a Pathfinder starts in the 15-inch family. If your vehicle has been modified over the years, verify the actual wheel diameter stamped on the wheel or confirm the tire size already mounted before choosing replacements.

1991 Nissan Trucks tires span several sidewall treatments depending on size. The 14-inch D21 sizes are centered on narrow whitewall and wide whitewall street radials. The 15-inch shared sizes expand the range: 215/75R15 comes in RBL, narrow whitewall, and wide whitewall form, 235/75R15 comes in RWL, narrow whitewall, and wide whitewall form, and 31X10.50R15 uses an RWL all-terrain sidewall.

That variety lets owners tune the look as much as the fitment. Whitewalls suit a more custom, classic, or period-inspired presentation, while blackwall and raised-white-letter truck tires lean toward a utility or sport-truck appearance that feels more natural on later compact pickups and SUVs. Matching the sidewall style to the way your D21 or Pathfinder is being restored or driven usually leads to the most satisfying result.

Five brands cover 1991 Nissan Trucks fitments: Coker Classic, Tornel, Maxxis, American Classic, and BFGoodrich. The 14-inch D21 sizes are served mainly by Coker Classic, Tornel, Maxxis, and American Classic in classic-style radial designs. The shared 15-inch sizes bring in BFGoodrich truck applications, while Coker Classic, Tornel, Maxxis, and American Classic continue to cover more traditional road-oriented looks depending on the exact size.

Brand choice often follows the kind of truck you are building. A D21 or Pathfinder with a custom or retro street theme may lean toward whitewall radial offerings, while a truck that needs all-terrain character will naturally point toward the BFGoodrich options in the 15-inch sizes. Once you have the correct size, compare sidewall appearance, intended use, and load capacity before narrowing it further.

In 235/75R15 for 1991 Nissan Trucks, BFGoodrich offers an All-Terrain T/A KO2 with an RWL sidewall, a 104S speed rating, a 1,985-pound load capacity at 50 psi, and a 6.0 to 7.0 inch rim-width range. Whitewall radial choices in the same size include American Classic, Maxxis, and Coker Classic, with narrow or wide whitewall styling, load figures from 2,028 to 2,271 pounds, and rim-width ranges that extend from 6.00 up to 8.50 inches depending on the tire.

The key difference is character rather than simple fitment. The BFGoodrich option presents a more contemporary truck tread and raised-white-letter look, while the whitewall radials emphasize a cleaner street appearance that can suit a custom pickup or a more nostalgic presentation. Wheel width matters here too, since some whitewall versions accept a broader rim range than the all-terrain tire.

Rim width depends on the exact size used on your 1991 Nissan Trucks vehicle. The 195/75R14 size fits widths from 5.00 to 7.00 inches on the products that publish that information. The 215/75R14 size spans about 5.5 to 7.5 inches, 215/75R15 spans about 5.5 to 7.5 inches, 235/75R15 spans 6.0 to 8.5 inches, and 31X10.50R15 spans 7.0 to 9.0 inches.

Those ranges show why the wheel itself matters almost as much as the tire size code. A size may mount on the correct diameter wheel but still be a poor match if the wheel is too narrow or too wide for the tire's approved range. Before ordering, compare your wheel width to the specific tire you want rather than assuming every version of the same nominal size has identical fitment tolerance.

The available 1991 Nissan Trucks products are radial tires and are presented without tube-type markings such as TT. Several sizes also use P-metric or metric radial sidewall markings that align with tubeless passenger and light-truck practice, including P195/75R14, P215/75R14, P235/75R15, and P215/75R15 in some versions. That points these fitments toward tubeless use on suitable wheels rather than traditional tube-type construction.

Wheel condition still matters. If you are using original steel wheels, especially on an older truck that has seen heavy service, inspect the bead seats and valve stem holes carefully so the wheel can hold air properly. A restorer dealing with damaged or heavily corroded wheels should correct the wheel issue first rather than using tubes as a shortcut for a wheel that no longer seals well.

Original 1991 Nissan Trucks wheels can only be used with sizes that match their rim diameter. The two D21-specific 14-inch sizes require 14-inch wheels, while 215/75R15, 235/75R15, and 31X10.50R15 require 15-inch wheels for both the D21 and Pathfinder. Even within the 15-inch group, approved rim width changes by size, with the 31X10.50R15 needing the widest wheel range.

That means a 15-inch D21 or Pathfinder wheel may accept more than one of the 15-inch sizes, but not every wheel is right for every one of them. The original wheel can be a good starting point if its width falls inside the tire's approved range. Measure the wheel before changing sizes, especially if the truck has aftermarket wheels or a previous owner already altered the setup.

A 1991 Nissan Trucks vehicle stores best in a cool, dry, dark environment away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Keep the tires clean, maintain normal storage pressure, and avoid parking for long periods on damp soil or oily concrete. Because all of these fitments are radial, they generally tolerate occasional inactivity better than older bias-ply designs, but long static periods can still create temporary flat spotting and accelerate sidewall aging.

Moving the truck periodically helps distribute load and keeps one section of the tread from carrying all the weight. If the vehicle will sit through a long season, many collectors either roll it a short distance every few weeks or place it on stands that relieve some weight from the tires. Covering the tires from UV exposure is also worthwhile if the storage area has windows or frequent door-open time.

On a low-use collector or hobby-driven 1991 Nissan Trucks vehicle, age is usually more important than tread wear. A sensible rule is to begin evaluating tires closely once they are around five to seven years old and to treat about ten years as the point where replacement deserves serious consideration regardless of remaining tread. The DOT date code on the tire sidewall is the best way to determine actual age.

That timeline matters because older trucks and SUVs often accumulate very few miles, which can make worn-looking tread a poor guide to safety. A tire may still look usable at a glance yet be aging internally or hardening from years of heat cycles and storage. If your D21 or Pathfinder spends long stretches parked, age-based replacement planning is smarter than waiting for tread depth alone to force the decision.

Tires on a 1991 Nissan Trucks vehicle should be inspected before every drive and more carefully before any longer highway outing. Look for sidewall cracking, cuts, punctures, bulges, uneven wear, and signs of air loss, then confirm inflation pressure with an accurate gauge. On a truck or SUV that may see rougher use, inspect the tread for stone drilling, shoulder damage, and any impact bruising from curbs or trail obstacles.

Routine checks matter even more on older vehicles because they are often driven intermittently and may sit long enough for slow leaks to go unnoticed. A quick visual walk-around before each drive can catch problems early, while a more deliberate inspection every month or two helps track age-related cracking and wear pattern changes. If one tire starts losing pressure faster than the others, investigate the wheel, valve stem, and tire immediately.

A 1991 Nissan Trucks D21 would have been equipped from new with radial tires, which aligns with every fitment used across this year and make. The D21 spans both 14-inch and 15-inch sizes, including 195/75R14, 215/75R14, 215/75R15, 235/75R15, and 31X10.50R15 depending on configuration and intended use. The exact original size depends on the truck's wheel package and model setup rather than the D21 name alone.

For a faithful restoration, start by confirming the original size from the truck's tire placard, owner's literature, or surviving service records. If the truck has changed hands often or wears aftermarket wheels, that research becomes especially important. Marque clubs and D21 specialists can also help sort out which size belongs on a specific body style or equipment package when you want the truck to present correctly.

Yes, correct tire fitment can matter on a shown 1991 Nissan Trucks vehicle, especially when the goal is preservation or period-correct presentation. Judges and knowledgeable enthusiasts often notice whether the wheel diameter, overall tire size family, tread style, and sidewall treatment fit the truck's era and the way the vehicle would reasonably have appeared. On a 1991 model, an obviously off-scale tire or a sidewall style that clashes with the build can stand out quickly.

The standard depends on the event. A stock-appearing D21 or Pathfinder generally benefits from a tire that looks appropriate to early-1990s street or light-truck use, while a custom mini-truck or personalized show build may intentionally lean into whitewalls or a different visual theme. If points judging is involved, check the event rules or ask a Nissan truck club what that show tends to reward before making the final choice.

In 215/75R14 for 1991 Nissan Trucks, Coker Classic appears in both Star Series and Coker Classic Radial forms with wide whitewall and narrow whitewall versions. The Coker Classic options carry load figures of 1,764 pounds at 32 psi and 1,664 pounds at 35 psi, with rim-width ranges from about 5.5 to 7.5 inches depending on the version. American Classic offers a 1-inch narrow whitewall radial in the same size with a 1,664-pound load capacity at 35 psi and a 5.50 to 7.50 inch rim-width range.

The practical difference is appearance first and specification detail second. If you are matching a particular whitewall width on a street-restored D21, the sidewall treatment may decide the issue more than the load figure. Once the look is right, compare the approved wheel-width range and pressure/load markings to make sure the tire suits the wheel and intended use.

Yes, 1991 Nissan Trucks tires can be suitable for highway driving when they are the correct size, properly inflated, in sound condition, and used within their ratings. The BFGoodrich truck-oriented products in 215/75R15, 235/75R15, and 31X10.50R15 carry an S speed rating, which corresponds to a 112 mph ceiling. The other radial offerings in these fitments are road-use tires as well, but their sidewall size markings do not always include a speed letter in the same way, so the specific tire should be checked individually.

In real use, a well-kept D21 or Pathfinder is usually limited more by age, suspension condition, alignment, and braking performance than by an S-rated tire's theoretical top-speed ceiling. Highway confidence comes from the whole package working together. A fresh tire on a truck with worn steering parts or weak shocks will still not feel right, so tire choice should be part of a broader roadworthiness check.

Inflation pressure on 1991 Nissan Trucks tires depends on the exact size and the specific tire's load rating. Examples include 195/75R14 products rated at 32 or 35 psi, 215/75R14 products rated at 32 or 35 psi, 215/75R15 products ranging from 32 to 50 psi among different designs, 235/75R15 products at 32, 35, or 50 psi, and 31X10.50R15 at 50 psi for the BFGoodrich application. Those figures reflect each tire's maximum load-and-pressure pairing, not a universal operating pressure for every truck.

Use the vehicle's original placard or owner's manual as the baseline for factory operating pressure, then compare that with the tire manufacturer's marking for the exact tire you choose. A reproduction-style street radial and an all-terrain light-truck tire can have very different maximum-pressure numbers even in nearby sizes. Treat each size and tire design on its own terms rather than carrying pressure settings over from a different setup.

Before a longer drive in a 1991 Nissan Trucks vehicle, inspect every tire for cracking, cuts, punctures, bulges, uneven wear, and correct cold inflation pressure. Confirm that the spare is usable and aired up, and make sure the valve stems are not aged or damaged. On trucks running taller all-terrain sizes, it is also smart to check for any rubbing at full steering lock or under suspension compression before the trip begins.

Tires are only one part of the pre-drive routine on a vehicle of this age. A D21 or Pathfinder heading out for sustained road use should also have its brakes, steering, wheel bearings, shocks, and fluid levels checked so the tire can do its job properly. Catching a weak spare, a cracked sidewall, or an underinflated tire in the driveway is much easier than dealing with it miles from home.