1989 Nissan Trucks D21 Tires

The 1989 Nissan Trucks D21 does not use one universal tire size across the whole model line. Primary fitments include 195/75R14, 215/75R14, 215/75R15, 235/75R15, and 31X10.50R15, all in radial construction, with the correct size tied to the exact sub-model and wheel package.

That means the first job is identifying the truck’s exact version and confirming whether it has a 14-inch or 15-inch wheel. A D21 Base or E 4x2 follows a different tire path than an SE 4x4, and a truck with changed wheels should be checked carefully before choosing a replacement size.

A 1989 Nissan Trucks D21 uses either a 14-inch or 15-inch rim, depending on the sub-model and tire size. The 195/75R14 and 215/75R14 fitments are built around 14-inch wheels, while 215/75R15, 235/75R15, and 31X10.50R15 require a 15-inch wheel.

Rim diameter is the first fitment checkpoint because a 14-inch tire cannot be mounted on a 15-inch wheel, and the reverse is equally true. Checking the wheel itself is especially important on older trucks that may have aftermarket wheels, later take-off wheels, or mixed front and rear tire setups from past use.

No, 1989 Nissan Trucks D21 sub-models do not all use the same tire size. The covered range includes smaller 14-inch radial fitments on some two-wheel-drive versions, 15-inch radial sizes on several 4x4 models, and two different 15-inch choices on the SE 4x4.

That variation matters because two sizes can look similar on paper while requiring different wheel diameters or offering a different overall tire presence. Matching the sub-model first helps prevent ordering a tire meant for another D21 configuration and keeps the selection process centered on the truck’s actual wheel and use case.

Start with the correct primary size for the exact 1989 Nissan Trucks D21 sub-model, then match the wheel diameter before comparing anything else. After that, the real selection factors are tire type, sidewall appearance, rim-width compatibility, load capacity, and whether the truck is being kept stock-looking or used in a more utility-focused way.

A whitewall radial gives the D21 a very different presentation than a BFGoodrich All-Terrain with raised white letters, even when both are valid options within the broader model range. It also helps to confirm the truck’s current wheel setup, since older pickups are often changed over time and may no longer wear their original wheel size.

Sidewall choices for the 1989 Nissan Trucks D21 include narrow whitewall, wide whitewall, black sidewall lettering styles such as RBL, and raised white letter styles such as RWL. The exact sidewall depends on tire size, with the smaller and mid-size radial options leaning heavily toward classic whitewall designs and the larger truck-oriented sizes adding BFGoodrich all-terrain lettering treatments.

That variety gives the D21 owner room to shape the truck’s appearance without changing the primary fitment. A whitewall radial suits a more restoration-minded or custom presentation, while a lettered all-terrain looks more at home on a utility-driven 4x4, especially in the 15-inch sizes.

Tires for the 1989 Nissan Trucks D21 are available from Coker Classic, American Classic, BFGoodrich, Maxxis, Tornel, and Travelstar, depending on the size. Brand choice changes with the fitment, so a 14-inch passenger-style radial assortment is not identical to the options offered in the larger 15-inch and flotation-size applications.

Choosing among those brands should begin with the correct size and wheel diameter, not name recognition alone. Once the fitment is settled, compare series style, sidewall treatment, rim-width range, and load figures where they matter, especially on 4x4 trucks that may see heavier use than a light-duty street-driven D21.

A period-style 1989 Nissan Trucks D21 tire choice starts with the truck’s actual size, then moves to the look you want. The available 14-inch and 15-inch radial options include several classic-style whitewall tires from Coker Classic, American Classic, Maxxis, Tornel, and Travelstar, while some larger 15-inch fitments also offer a more truck-focused all-terrain presentation.

For a restoration-oriented truck, keeping the correct size and wheel diameter matters more than forcing a favorite sidewall onto the wrong fitment. When exact originality is important, the final sidewall and series decision should be checked against period photos, marque references, or other vehicle-specific history for the particular D21 being restored.

On the 1989 Nissan Trucks D21, construction is straightforward because the primary fitments are radial rather than bias-ply. Even so, construction still influences appearance through the tire families available in each size, since the product range spans smooth classic-style whitewall radials and more assertive truck-oriented radial all-terrain designs.

That means a restored D21 can take on a very different visual character without changing the correct size. A whitewall radial can support a more vintage custom or preserved showroom feel, while a lettered all-terrain suits a tougher 4x4 stance, so the right choice depends on the truck’s intended presentation and actual sub-model fitment.

Yes, modifications can affect tire fitment on a 1989 Nissan Trucks D21, especially because this model range already spans both 14-inch and 15-inch wheel packages plus a larger 31X10.50R15 application. Changes such as aftermarket wheels, altered ride height, suspension work, or body modifications can all influence which tire size still works properly on the truck.

A modified D21 should be checked for wheel diameter, wheel width, steering clearance, and fender clearance before replacing tires. That is especially important on 4x4 models, where a truck may currently wear a larger size than it originally used, or may have clearance issues that a stock-height truck would not have.

Before driving a 1989 Nissan Trucks D21 on new tires, inspect the wheels for correct diameter and condition, confirm that lug hardware seats properly, and make sure the tires are inflated to a suitable pressure for the application. It also helps to look over suspension and steering components so the new tires are not being asked to compensate for worn mechanical parts.

A short, careful road check is a smart next step, with attention paid to rubbing, pull, vibration, or uneven steering response. Older compact trucks often have a long service history, so new tires should also be monitored for early signs of uneven wear, air loss, or contact issues during the first several drives.

Before a longer drive in a 1989 Nissan Trucks D21, check tire pressure, tread condition, sidewall condition, and the spare, then confirm that each tire matches the truck’s intended wheel setup. On a collector or lightly used truck, age-related cracking, flat spotting, and slow air loss deserve just as much attention as remaining tread depth.

A longer trip also makes it worthwhile to look for any sign of rubbing at full steering lock or under suspension movement, especially on 4x4 trucks and larger 15-inch fitments. Catching those issues early helps protect the tires and gives the D21 a better chance of running comfortably and consistently once it is back on the road.