GMC Vans G3500 Tires

GMC Vans G3500 uses four tire sizes across the 1980-1996 span: 875-16.5 for 1980-1990, 8.75R16.5 for 1983-1988 and 1990, 225/75R16 for 1991-1996, and 245/75R16 for 1996. The 875-16.5 and 8.75R16.5 sizes both fit 16.5-inch wheels, while 225/75R16 and 245/75R16 fit 16-inch wheels.

That means the correct tire for a GMC Vans G3500 depends on both model year and wheel diameter. Overlap years should be checked especially carefully, because the presence of more than one listed size usually points to alternate wheel or tire setups rather than a single universal fitment.

On a GMC Vans G3500, 875-16.5 is a numeric bias-ply commercial tire size. The 875 indicates a nominal section width of about 8.75 inches, and the 16.5 indicates the wheel diameter in inches. The available products in this size are bias-ply truck tires built for 16.5-inch rims.

That older sizing format can look similar to later radial markings, but it is not the same thing as a modern metric size. If your GMC Vans G3500 has 16.5-inch wheels and period-style commercial tire fitment, this is one of the markings you may find on the sidewall.

A 1983 GMC Vans G3500 has two tire sizes listed because both 875-16.5 and 8.75R16.5 were used that year. Those two sizes share the same 16.5-inch rim diameter, but they differ in construction style: 875-16.5 is a bias-ply size and 8.75R16.5 is a radial size marking.

The practical takeaway is that a 1983 GMC Vans G3500 should be identified by what is actually on the wheels now and by the wheel diameter itself. Matching the sidewall size and construction type already fitted is the safest starting point unless the van is being intentionally restored or reconfigured.

GMC Vans G3500 uses two rim diameters across the years covered here: 16.5-inch wheels through the earlier fitments and 16-inch wheels beginning in 1991. The 875-16.5 and 8.75R16.5 sizes belong to 16.5-inch rims, while 225/75R16 and 245/75R16 belong to 16-inch rims.

That year break matters because a 16-inch tire will not fit a 16.5-inch wheel, and a 16.5-inch tire will not fit a 16-inch wheel. On any GMC Vans G3500 from the transition period or with changed wheels, confirm the actual wheel diameter before going further.

GMC Vans G3500 appears with both bias-ply and radial fitments in the covered years. The 875-16.5 products are bias-ply truck tires, while 225/75R16 and 245/75R16 are radial tires, and 8.75R16.5 is also a radial size marking. The right choice depends first on the wheel diameter and then on whether you want to preserve a more period-correct commercial setup or use a later radial-style fitment that matches the wheel.

Bias-ply and radial tires can give a GMC Vans G3500 a different look and road feel, but wheel compatibility comes first. If originality matters, many owners keep the construction type associated with their van’s existing size and era rather than treating the two as interchangeable.

A GMC Vans G3500 fitted with radial tires will usually feel different from one on bias-ply tires because the tire construction is different even when the wheel diameter is the same. In this fitment range, radial choices include 8.75R16.5, 225/75R16, and 245/75R16, while 875-16.5 is bias-ply.

That difference matters most on a heavy-duty van used for road driving rather than display. Owners moving from an older bias-ply setup to a radial setup on a compatible GMC Vans G3500 often pay close attention to steering feel, stance, and whether the change still suits the van’s intended use.

A GMC Vans G3500 should not be treated casually when mixing bias-ply and radial tires because the two constructions behave differently under load and on the road. The fitment range here includes both constructions, but that does not make them ideal to combine on the same van without a deliberate plan.

Keeping the same construction type on all four corners of a GMC Vans G3500 is the cleaner approach for consistent handling and appearance. If the van is being restored, used for towing, or carries heavy loads, it is wise to settle on one construction type that matches the wheel diameter and the van’s actual job.

A 1990 GMC Vans G3500 can use either 8.75R16.5 or 875-16.5, and both sizes fit 16.5-inch wheels. The difference is not wheel diameter in that year, but the tire sizing style and construction approach associated with the sidewall marking.

Start by checking the tire already on the van and confirming the exact sidewall size. If the van has been altered over the years, compare the current wheel diameter and intended use so the replacement tire matches both the hardware and the character of the existing setup.

GMC Vans G3500 tires in the available range come in Blackwall and RWL sidewall styles. The 875-16.5 commercial truck tires are listed as Blackwall, while the 225/75R16 and 245/75R16 radial products are listed as RWL.

That gives GMC Vans G3500 owners a visual cue that often follows the era and tire type of the van. A work-oriented earlier setup usually suits the plain commercial blackwall look, while later radial fitments can carry the more visible raised white letter style common on truck tires of the period.

GMC Vans G3500 tires in this range are offered by STA and BFGoodrich. STA covers the 875-16.5 commercial bias-ply applications, while BFGoodrich covers the 225/75R16 and 245/75R16 radial applications.

That brand split follows the change in tire type and era across the GMC Vans G3500 production run. Earlier heavy-duty 16.5-inch fitments lean toward period-style commercial offerings, while later 16-inch fitments align with more modern radial truck tire choices.

GMC Vans G3500 tires here appear in three series: STA Traxion, STA Transport Highway, and BFGoodrich All-Terrain T/A KO2. Traxion and Transport Highway are bias-ply commercial 875-16.5 offerings, while All-Terrain T/A KO2 covers the later 16-inch radial sizes.

The main difference is the type of use each series suggests within the listed fitments. GMC Vans G3500 owners looking to preserve an earlier heavy-duty commercial look will usually focus on the STA choices, while later 16-inch vans align more naturally with the radial BFGoodrich series.

A GMC Vans G3500 should be stored on a clean, dry surface away from direct sunlight, electric motors, welders, and ozone-producing equipment that can age rubber prematurely. Keeping the tires properly inflated and the van out of long-term standing water also helps protect the casing and sidewalls.

If a GMC Vans G3500 sits for extended periods, moving it occasionally or supporting it to reduce prolonged flat spotting can help, especially on older-style commercial tires. Collector vehicles tend to age tires by time and storage conditions as much as by mileage.

Tires on a GMC Vans G3500 should be inspected regularly even if the van is driven only occasionally. Look for sidewall cracking, tread separation, irregular wear, impact damage, air loss, and signs that the tire and wheel are not a proper match, particularly on vans that may have changed wheels over the years.

A good routine is to inspect a GMC Vans G3500 before road use, after long storage periods, and any time steering feel or ride quality changes. Heavy-duty vans place meaningful demands on tires, so small issues are worth catching early rather than after they become road problems.

A GMC Vans G3500 tire should be replaced when age, cracking, separation, repeated air loss, impact damage, or visible structural deterioration appears, even if plenty of tread remains. Collector and low-use vehicles often age out tires before they wear them out because the rubber and internal structure change over time.

That is especially important on a GMC Vans G3500 that still sees road duty or carries weight. Tread depth alone is not a reliable guide on an older van, so periodic professional evaluation of the tire’s overall condition is a smart part of ownership.

GMC Vans G3500 appears with multiple period-appropriate fitment types across its production run rather than one single tire specification. Earlier years use 875-16.5, some overlap years also list 8.75R16.5, and later years move to 225/75R16 with 245/75R16 appearing in 1996.

For restoration work, that means the correct tire for a GMC Vans G3500 depends on the exact year and the wheel setup on the van being restored. Factory literature, original window sticker information, and marque-specific references are the best tie-breakers when more than one period size appears in the same year.

Correct tire fitment can affect both presentation and judging on a GMC Vans G3500, especially when the van is restored to a particular period appearance. Wheel diameter, sidewall style, and construction type all influence whether the van looks true to its model year and intended use.

A GMC Vans G3500 restored as a work-oriented survivor may benefit from period-style commercial blackwall tires, while a later van may look more appropriate on its radial 16-inch fitment. Owners pursuing judged events usually compare against era-correct references and club standards rather than choosing on size alone.

GMC Vans G3500 restoration choices in the available range include Blackwall and RWL sidewall styles. Blackwall appears on the 875-16.5 commercial bias-ply products, while RWL appears on the 225/75R16 and 245/75R16 radial products.

The right look depends on which chapter of GMC Vans G3500 production you are restoring. Earlier heavy-duty van presentations usually align with blackwall commercial tires, while later radial-era restorations can make sense with the raised white letter style if that suits the van’s period and equipment.

A GMC Vans G3500 can be driven on public roads only when the tires fitted are the correct size for the wheel, in sound condition, and appropriate for the van’s actual use. The fitment range here includes both older 16.5-inch commercial tires and later 16-inch radial truck tires, so safety begins with choosing the right wheel diameter and construction.

On a GMC Vans G3500 that is used occasionally, condition matters as much as specification. A tire that matches the sidewall size but is aged, damaged, or mounted on the wrong wheel is not a sound roadgoing setup even if the van is rarely driven.

Before driving a GMC Vans G3500, check tire inflation, visible condition, tread and sidewall damage, valve stems, and whether all four tires match the intended setup. It is also wise to confirm that the sidewall size corresponds to the wheel diameter, especially on vans from overlap years or with replacement wheels.

A quick walkaround can prevent the most common tire-related problems on a GMC Vans G3500. If the van has sat for a long period, pay extra attention to flat spotting, weathering, and any vibration or pull that shows up immediately once it is back on the road.

A GMC Vans G3500 should always be driven at speeds appropriate to the exact tire fitted, its condition, and the van’s load, rather than by assuming every listed tire supports the same kind of road use. Earlier commercial-style 16.5-inch bias-ply tires and later radial truck tires are different categories of tire even when both fit the broader model line.

For a GMC Vans G3500 that still uses older-style tires, conservative road use is the sensible approach, especially if the van is lightly used or restored. Later radial-equipped vans generally lend themselves to more normal modern driving manners, but age, condition, and load still set the real limit.