1987 GMC Vans Tire Fitment Guide

1987 GMC Vans use seven sizes across three model lines. G1500 fitments are 195/75R15, 205/75R15, and 215/75R15; G2500 fitments are 225/75R15 and 235/75R15; G3500 fitments are 875-16.5 and 8.75R16.5. The G1500 and G2500 sizes all mount on 15-inch wheels, while the G3500 uses 16.5-inch wheels. Rim width ranges where available run from 5.00-7.50 inches on the lighter 15-inch sizes up to 6.00-8.50 inches on the larger 15-inch options.

That means there is no one-size-fits-all answer for 1987 GMC Vans. A buyer needs to identify the van as a G1500, G2500, or G3500 before comparing products, because the wheel diameter changes on the one-ton model and the tire families are not interchangeable across those groups. If your van has had wheels swapped at some point, confirm the actual wheel diameter and width before settling on a size.

On 1987 GMC Vans, 875-16.5 is a numeric bias-ply truck size used on G3500 models. The 8.75 portion refers to the nominal section width, and 16.5 is the wheel diameter in inches. Because there is no R in the size code, it identifies a bias-ply construction rather than a radial. In this application, 875-16.5 is available as a blackwall heavy-duty truck tire from STA.

That code matters because it is not the same thing as a 15-inch van tire, and it is also distinct from the radial 8.75R16.5 size used in the same G3500 family. Owners trying to keep a work-van or commercial-style look may gravitate toward the numeric bias-ply format, but the first priority is still verifying that the van is on the correct 16.5-inch wheels before choosing a tire.

No, 1987 GMC Vans models do not share one common size. The G1500 uses three 15-inch radial sizes, the G2500 uses two different 15-inch radial sizes, and the G3500 uses 16.5-inch heavy-duty sizes in both bias-ply and radial forms. Even though the G1500 and G2500 both stay with 15-inch wheels, their size ranges are separate from the one-ton G3500 fitment family.

In practical terms, a buyer should treat model identification as the first fitment step, not a minor detail. If you own a van that has been converted, repainted, or rebadged over the years, check the series designation and the wheels currently on the van before comparing whitewall, blackwall, or truck-tire options. That prevents confusion between half-ton, three-quarter-ton, and one-ton applications.

For 1987 GMC Vans G3500 models, the choice between 875-16.5 and 8.75R16.5 is primarily a construction decision once wheel diameter has been confirmed. The 875-16.5 is a bias-ply truck size, while 8.75R16.5 is the radial version of the same basic 16.5-inch fitment family. Bias-ply and radial tires behave differently, so the selection is less about one being universally correct and more about how you want the van to look and drive.

Owners preserving a more traditional commercial or heavy-truck character often prefer the numeric bias-ply route, while drivers who use a G3500 more regularly on the road often look toward the radial format. The key is to avoid mixing construction assumptions with wheel assumptions: both are 16.5-inch applications, but you should still confirm the actual tire size marked on the van now and make sure all four tires stay within the same fitment strategy.

1987 GMC Vans cover a wide sidewall range depending on size. The 15-inch G1500 and G2500 radial sizes are available in narrow whitewall, wide whitewall, goldline, RBL, and RWL styles, while the G3500's 875-16.5 bias-ply choices are blackwall truck tires. Whitewall and goldline treatments suit vans with a more passenger-oriented, custom, or conversion-van appearance, while blackwall and raised-letter options fit a more utility-driven look.

Because these vans sat at the intersection of work use and personal use, sidewall choice changes the visual character almost as much as wheel choice. A whitewall radial can make a G1500 or G2500 feel more in step with late-classic American styling, whereas a blackwall truck tire keeps a G3500 visually honest to its heavier-duty mission. Match the sidewall to the van's intended presentation before narrowing down individual products.

1987 GMC Vans are covered by several brands across the different sizes. G1500 sizes are available from BFGoodrich, Tornel, American Classic, and Coker Classic; G2500 sizes are available from BFGoodrich, Coker Classic, American Classic, and Maxxis; and the G3500 bias-ply 875-16.5 is available from STA. The brand mix reflects the split between classic-style passenger and light-truck radials on the 15-inch vans and heavier-duty truck fitments on the 16.5-inch one-ton model.

That variety gives owners room to prioritize appearance, load character, or a more utility-focused tread style without stepping outside the correct size family for their model. The easiest way to narrow the field is to decide three things first: your exact model, your tire size, and whether you want a more traditional whitewall presentation or a work-oriented blackwall or raised-letter look. Once those are set, the brand choice becomes much clearer.

Rim width depends on the size used on your 1987 GMC Vans model. For G1500 sizes, 195/75R15 fits 5.00-7.00 inches, 205/75R15 fits 5.50-7.50 inches, and 215/75R15 generally fits 5.5-7.5 inches. For G2500 sizes, 225/75R15 fits 6.00-8.00 inches and 235/75R15 fits roughly 6.00-8.50 inches depending on the product. The 16.5-inch G3500 sizes do not carry rim-width figures here, so the wheel diameter match is the first confirmed point.

Rim width matters because two tires can share the same wheel diameter yet still want different wheel widths for proper section shape and sidewall support. If your van wears aftermarket wheels or conversion-van accessories, measure the wheels before settling on a tire. Staying within the recommended width range helps preserve the tire's intended footprint, appearance, and load behavior.

The 15-inch radial sizes used on 1987 GMC Vans G1500 and G2500 models are tubeless-style fitments based on their size markings. The 875-16.5 G3500 bias-ply products do not show a tube-type or tubeless marking in the size field here, and the 8.75R16.5 radial size is not paired with a product detail set in this selection. That makes the wheel itself especially important on the heavier-duty van, because tube use on older truck applications can depend on both tire construction and wheel design.

If you are working with a G1500 or G2500 on standard tubeless 15-inch wheels, the path is straightforward. On a G3500, inspect the wheel type and consult the specific tire's sidewall marking before making assumptions about tube use. That extra check is worthwhile on 16.5-inch commercial-style applications, especially if the van has spent time in fleet service or has had wheel changes over the years.

No, original 1987 GMC Vans wheels cannot be treated as universal across all seven tire sizes. The G1500 and G2500 sizes are all 15-inch fitments, but the G3500 uses 16.5-inch sizes, which rules out interchange across the full model range. Even within the 15-inch group, the acceptable rim width changes from one size to the next, so wheel compatibility is about more than diameter alone.

A G1500 or G2500 owner may be able to move among several 15-inch sizes if the wheel width is appropriate, but that should be verified against the actual wheels on the van. A G3500 owner should think of 16.5-inch fitment as its own separate category. Before changing size, confirm both diameter and width so the tire is matched to the wheel rather than just the badge on the door.

A stored 1987 GMC Vans should be kept out of direct sunlight and away from electric motors, welders, battery chargers, and other ozone-producing equipment that can accelerate sidewall aging. Clean, dry concrete is better than damp ground, and tire covers help if the van must sit where light reaches it. Radial tires generally tolerate static storage better than bias-ply tires, while bias-ply construction is more prone to flat-spotting when a heavy vehicle remains parked for long periods.

For a van that sits through winter or between shows, keep the tires inflated properly and move the vehicle occasionally so the same footprint is not carrying the load month after month. If storage will be extended, some owners use stands to reduce sustained weight on the tires. Heavy G2500 and G3500 vans especially benefit from a storage plan that limits moisture, sun exposure, and long uninterrupted periods in one position.

Tire life on a 1987 GMC Vans is usually judged more by age than by mileage, especially because many surviving vans are hobby, seasonal, or occasional-use vehicles. A good rule is to start evaluating tires closely once they reach about five to seven years of age, and to treat around ten years as the point where replacement deserves serious consideration regardless of tread depth. The DOT date code on the sidewall is the best way to establish the tire's age.

That approach matters because an older van can wear very few miles while still carrying tires that have hardened, cracked, or weakened internally over time. A conversion van that only sees summer cruises and a work-style G3500 that sits most of the year can both age out their tires before they wear them out. If the date code points to an older set, age should factor into the decision at least as much as appearance.

Tires on a 1987 GMC Vans should be checked before every drive, with a more thorough inspection before any longer outing. Look for sidewall cracking, tread separation signs, embedded debris, bulges, uneven wear, and pressure loss. On heavier vans or older wheel setups, also pay close attention to valve stems and the condition of the spare, since those are easy to overlook until a roadside problem appears.

Regular inspection is especially important on collector vans because they often alternate between long dormant periods and sudden highway use. A tire that looked acceptable in the garage can behave very differently once it heats up under load. Building a quick pre-drive routine around pressure, visual condition, and spare readiness is one of the simplest ways to reduce surprises with an older GMC van.

A 1987 GMC Vans G1500 falls into the period when radial construction was the normal mainstream fitment for American full-size vans, and its size range here reflects that with 195/75R15, 205/75R15, and 215/75R15 radial sizes. Those sizes sit firmly in late-classic OEM practice rather than earlier bias-ply convention. Sidewall appearance could still vary depending on how the van was ordered and presented, especially for passenger, custom, or conversion-oriented use.

For restoration work, the safest path is to verify the original tire information sticker, owner's literature, or a marque-specific source before locking in one exact size. That is especially useful on vans that may have served commercial fleets, family duty, or aftermarket conversion companies, because wheel and appearance choices could change over time. Marque clubs and original sales materials are the right places to confirm market- and trim-specific authenticity details.

Correct tire fitment absolutely matters when showing a 1987 GMC Vans, especially if the event judges authenticity rather than simply presentation. Size, construction type, and sidewall style all affect whether the van looks era-appropriate. A G1500 or G2500 wearing a visibly off-theme truck-style tire, or a G3500 wearing a mismatched construction or incorrect wheel diameter, can stand out quickly to knowledgeable judges and enthusiasts.

The level of scrutiny depends on the event. A local cruise night may reward overall visual impact, while a marque event or preservation-focused show is more likely to care about whether the tire's size family and sidewall treatment suit the van's original role. If trophies matter, confirm standards with the hosting organization or a GMC marque specialist before choosing between whitewall, blackwall, bias-ply, or radial alternatives.

For the 1987 GMC Vans G3500 in 875-16.5, STA offers both the Traxion and the Transport Highway. Both are blackwall bias-ply truck tires for the same 16.5-inch fitment, but they differ in series identity and weight, with the Traxion at 38 pounds and the Transport Highway at 40 pounds. That tells a buyer they occupy the same basic size family while targeting somewhat different visual and service character within heavy-duty use.

A G3500 owner comparing the two should think about how the van will be used and how truck-like the finished look should be. Since both stay within the same bias-ply 16.5-inch format, the choice is more about the character of the tire than about changing the basic fitment. For a restoration or work-style presentation, comparing tread style and overall appearance alongside the van's intended use is the sensible next step.

1987 GMC Vans tires can be appropriate for highway use when the size, construction, condition, and load rating match the van and its intended service. Among the sizes with visible speed ratings, 215/75R15 and 235/75R15 examples appear with an S rating, which carries a 112 mph ceiling. In real use, the van's age, suspension condition, braking system, weight carried, and general mechanical state usually matter more than chasing high speed capability, because these are full-size vans rather than modern high-performance vehicles.

The practical takeaway is to think in terms of safe, stable cruising rather than top-speed potential. A healthy G1500 or G2500 on the right radial tires can be entirely suitable for regular road use, while a G3500 should be judged with even more attention to load, wheel condition, and overall mechanical readiness. Highway safety starts with fresh, properly inflated tires and a van that is mechanically prepared for the trip.

Inflation pressure on 1987 GMC Vans depends on the exact tire size and product. Available figures include 195/75R15 at 32-35 psi depending on brand, 205/75R15 at 35 psi, 215/75R15 from 32 psi in classic-style radials up to 50 psi on the BFGoodrich All-Terrain T/A KO2, 225/75R15 at 32-35 psi, and 235/75R15 from 32 psi to 50 psi depending on the tire. Those pressures are tied to each tire's own load rating and construction, not to the van name alone.

Use the vehicle's original literature as the starting point for factory recommendations, then compare that with the reproduction or replacement tire's own rated pressure and load information. Do not transfer one pressure figure from a passenger-style whitewall radial to an all-terrain tire or from one size to another just because the wheel diameter matches. Pressure should always be matched to the exact tire on the van.

Before a longer trip in a 1987 GMC Vans, inspect each tire for cracking, cuts, bulges, irregular wear, and any sign of impact damage. Verify cold inflation pressure, check that valve stems are sound, and make sure the spare is usable and inflated. On a heavier van, pay close attention to load-related issues such as squatting, uneven stance, or signs that the tire fitted does not match the duty the van is being asked to perform.

Tires are only one part of the pre-trip picture on an older van, but they are the part that carries every other system. A smart long-drive routine also includes wheel fastener checks, brake inspection, fluid levels, and a quick look underneath for leaks or suspension problems. When a classic or older GMC van is asked to cover distance, prevention matters far more than roadside correction.