1989 GMC Vans covered a wide span of full-size American work and passenger use, from lighter-duty G1500 models to heavier G2500 and G3500 variants. That broad lineup means tire choice is not one-size-fits-all, because GMC used three different model groups with six distinct sizes across the year. Most of the range rides on 15-inch radial sizes, while the G3500 stands apart with a 16.5-inch bias-ply truck size, so the real decision starts with identifying the exact van series before comparing appearance and driving character. For 1989 GMC Vans, confirm your model first, then match the correct size and construction to the wheel you actually have.
Which Tire Size Is Right for Your 1989 GMC Vans
Six tire sizes appear across 1989 GMC Vans, and they vary by model rather than being shared across the full range. The main decision is confirming whether your van uses a 15-inch radial passenger/light-truck size or the G3500's separate 16.5-inch bias-ply truck fitment. Understanding that distinction before choosing a product saves time and helps you match the tire to the correct van and wheel.
Year(s): 1989|Fit(s): G1500|Construction: Radial|Rim: 15 in
205/75R15 is a metric radial size with a 205 millimeter section width, a 75-series profile, and fitment for a 15-inch wheel. This G1500-specific size is available from BFGoodrich, Tornel, and American Classic in wide whitewall, narrow whitewall, and goldline styles. It suits owners who want a 15-inch radial for a G1500 and want to choose primarily by sidewall appearance rather than by a change in basic construction.
Year(s): 1989|Fit(s): G1500|Construction: Radial|Rim: 15 in
215/75R15 is a metric radial size that uses a 215 millimeter section width, a 75-series profile, and a 15-inch rim. This G1500-specific size is available from BFGoodrich, Coker Classic, Tornel, and other radial offerings in RBL, narrow whitewall, and wide whitewall styles, and speed ratings vary by product; BFGoodrich All-Terrain T/A KO2 carries an S rating with a 112 mph ceiling. It is a useful choice for G1500 owners who need a 15-inch radial and want either a more utility-oriented black sidewall look or a more traditional whitewall presentation.
Year(s): 1989|Fit(s): G1500|Construction: Radial|Rim: 15 in
195/75R15 is a metric radial size with a 195 millimeter section width, a 75-series profile, and fitment for a 15-inch wheel. This G1500-specific size is available from Coker Classic and American Classic in both narrow whitewall and wide whitewall styles. It appeals to G1500 owners staying with a 15-inch radial while choosing between a subtler sidewall look and a fuller whitewall appearance.
Year(s): 1989|Fit(s): G2500|Construction: Radial|Rim: 15 in
225/75R15 is a metric radial size with a 225 millimeter section width, a 75-series profile, and a 15-inch rim diameter. This G2500-specific size is available from BFGoodrich, Coker Classic, and American Classic with both wide whitewall and narrow whitewall sidewall treatments. It fits buyers who have a G2500 on 15-inch wheels and want a radial choice that can lean more toward restoration appearance or a cleaner everyday look.
Year(s): 1989|Fit(s): G2500|Construction: Radial|Rim: 15 in
235/75R15 is a metric radial size using a 235 millimeter section width, a 75-series profile, and fitment for a 15-inch wheel. This G2500-specific size is available from BFGoodrich, American Classic, Maxxis, and Coker Classic in RWL, narrow whitewall, and wide whitewall styles, and speed ratings vary by product; BFGoodrich All-Terrain T/A KO2 carries an S rating with a 112 mph ceiling. It makes sense for G2500 owners who want a 15-inch radial with the broadest mix of traditional whitewall and more truck-oriented sidewall options.
Year(s): 1989|Fit(s): G3500|Construction: Bias Ply|Rim: 16.5 in
875-16.5 is a numeric bias-ply size in which 875 denotes the nominal section width class and 16.5 is the wheel diameter in inches. This G3500-specific size comes from STA in blackwall form, with Transport Highway and Traxion bias-ply designs. It is the specialty fitment for the heavy-duty G3500 and is the right path when preserving the original truck-style construction and 16.5-inch wheel compatibility matters more than matching the radial sizes used elsewhere in the GMC van range.
The 15-inch radial sizes can often share the same wheel diameter across G1500 and G2500 applications, but rim width should be confirmed against the specific size and wheel before moving from one size to another.
1989 GMC Vans Models
Three GMC van models are covered for 1989, and they do not all use the same tire sizes. G1500 and G2500 models stay within 15-inch radial fitments, while the G3500 uses a separate 16.5-inch bias-ply truck size, so identifying the van series is the first step before choosing a tire. Select your model below to narrow the fitment history and see the sizes that apply to that specific van.
1989 GMC Vans G1500
The G1500 was the lighter-duty full-size GMC van, commonly used as a passenger hauler, conversion van, or everyday utility vehicle. Its tire fitments stay on 15-inch wheels and use radial construction throughout, with three different metric sizes appearing across the model.
The G2500 sat in the middle of GMC's full-size van lineup, aimed at buyers who needed more carrying capability without moving all the way into the heaviest series. Its tires mount on 15-inch wheels, and both available sizes are radial options with a mix of traditional whitewall and truck-style sidewall looks.
Associated Tire Sizes:
225/75R15 — radial, classic whitewall or clean sidewall
The G3500 was the heavy-duty version of the GMC full-size van range, built for the highest payload and commercial-duty use in the family. It stands apart from the lighter vans by using a 16.5-inch wheel and a bias-ply truck tire size rather than the 15-inch radial fitments found on G1500 and G2500 models.
Associated Tire Sizes:
875-16.5 — bias-ply, truck-style original character
Forty-four products are available across six tire sizes for 1989 GMC Vans vehicles. The 15-inch radial sizes span BFGoodrich, American Classic, Coker Classic, Tornel, and Maxxis with whitewall, goldline, RBL, and RWL styles, while 875-16.5 is an STA bias-ply blackwall; confirm your size first, since speed ratings vary within some radial sizes.
Radial Tires
BFGoodrich Silvertown Radial | 2.375 Inch Whitewall | 205/75R15
These answers sort out which 1989 GMC Vans models use which sizes, how the 15-inch radial options differ from the G3500's 16.5-inch bias-ply fitment, and what to check for sidewall style, wheel compatibility, highway use, and long-term collector storage.
Size Basics & Fitment
What tire sizes fit 1989 GMC Vans vehicles?
1989 GMC Vans use six sizes across three model lines. G1500 models use 195/75R15, 205/75R15, and 215/75R15; G2500 models use 225/75R15 and 235/75R15; and G3500 models use 875-16.5. The five metric radial sizes all fit 15-inch wheels, while 875-16.5 is a separate bias-ply size for a 16.5-inch wheel. Rim-width coverage also changes by size, with examples ranging from about 5.0 to 7.5 inches on smaller G1500 fitments and up to about 6.0 to 8.5 inches on some G2500 applications.
That means year and make alone are not enough for a correct match on 1989 GMC Vans. Start by identifying whether your van is a G1500, G2500, or G3500, then confirm the wheel diameter actually on the van before moving to sidewall style or brand preference. A G3500 owner cannot substitute one of the 15-inch radial van sizes without changing wheels, and a G1500 or G2500 owner should not assume any 15-inch size is interchangeable without checking wheel width and the fitment history of the specific model.
What does 205/75R15 mean on a 1989 GMC Vans tire?
On 1989 GMC Vans, 205/75R15 is a metric radial size. The 205 is the nominal section width in millimeters, 75 is the aspect ratio, R identifies radial construction, and 15 is the wheel diameter in inches. Within the GMC van range, that size belongs to the G1500 and fits 15-inch wheels, with products available in wide whitewall, narrow whitewall, and goldline styles.
Understanding the code helps you avoid confusing wheel diameter with overall tire size. A 205/75R15 can be close in theme to other 15-inch van fitments, but it is still a distinct size with its own width and rim-width range. For a G1500 owner, the practical question is less about decoding the code and more about confirming whether the van was using 195, 205, or 215 width tires before choosing the sidewall appearance that best suits a stock van, a custom conversion, or a cleaner driver-style presentation.
What does 875-16.5 mean on a 1989 GMC Vans tire?
On 1989 GMC Vans, 875-16.5 is a numeric bias-ply truck size rather than a modern metric radial code. The 875 identifies the nominal section-width class, and 16.5 is the wheel diameter in inches. In the GMC van lineup, that size is used by the G3500 and is offered in blackwall STA bias-ply designs such as Traxion and Transport Highway.
That matters because a 16.5-inch tire is not interchangeable with the 15-inch radial sizes used on G1500 and G2500 vans. If you own a G3500, confirm that the wheels are still 16.5-inch originals or matching replacements before ordering tires. This size also signals a different use case and feel than the passenger-style radial van tires elsewhere in the lineup, so owners restoring a heavy-duty work van usually want to keep the size and construction aligned with the van's original wheel format.
Buying the Right Tire
What sidewall styles are available for 1989 GMC Vans tires?
1989 GMC Vans cover a wide range of sidewall appearances depending on size. The 15-inch radial sizes include narrow whitewall and wide whitewall options across several G1500 and G2500 fitments, with goldline available in 205/75R15, RBL in 215/75R15, and RWL in 235/75R15. The G3500's 875-16.5 stays in blackwall form, which suits its heavier-duty truck character.
For a stock-looking passenger or conversion van, whitewall choices often make the biggest visual difference even when the basic size stays the same. Black-letter and raised-letter styles tend to lean more toward utility or off-road-inspired presentation, while the G3500's blackwall bias-ply look is more consistent with commercial-duty hardware. If your goal is authenticity, choose the sidewall treatment that fits the role your van would have played when new rather than selecting purely by brand.
What brands make tires for 1989 GMC Vans vehicles?
1989 GMC Vans are covered by several brands across the six sizes. BFGoodrich appears in 205/75R15, 215/75R15, 225/75R15, and 235/75R15; American Classic appears in 195/75R15, 205/75R15, 225/75R15, and 235/75R15; Coker Classic appears in 195/75R15, 215/75R15, 225/75R15, and 235/75R15; Tornel appears in 205/75R15 and 215/75R15; Maxxis appears in 235/75R15; and STA covers 875-16.5.
Brand choice on 1989 GMC Vans usually follows size first and appearance second. Some sizes give you multiple whitewall widths and styling themes, while others lean more toward truck use or commercial presentation. Once you know whether your van is a G1500, G2500, or G3500, narrow the search to the size that belongs on that model and then compare the available brands by construction, sidewall style, and any speed or load information that matters for how the van will actually be used.
What is the difference between BFGoodrich All-Terrain T/A KO2 and Coker Classic Star Series for 1989 GMC Vans?
On 1989 GMC Vans, BFGoodrich All-Terrain T/A KO2 appears in 215/75R15 and 235/75R15 with utility-oriented sidewall styling and an S speed rating, which carries a 112 mph ceiling. Coker Classic Star Series appears in several 15-inch sizes with narrow or wide whitewall styling, lower rated pressures such as 32 psi on many examples, and load figures that vary by size, including 1,477 pounds in 195/75R15, 1,874 pounds in 215/75R15, 2,094 pounds in 225/75R15, and 2,271 pounds in 235/75R15.
The practical difference is visual character and use emphasis more than whether one is simply right and the other wrong. KO2 products suit owners leaning toward a truck-like appearance, while Star Series products suit owners chasing a more traditional whitewall look for a passenger van or conversion-style presentation. Either way, the decision still has to start with the exact GMC van model and its correct tire size, because sidewall style never overrides proper wheel diameter and fitment.
Fitting & Setup
What rim width do 1989 GMC Vans tires require?
Rim-width coverage for 1989 GMC Vans varies by size. 195/75R15 fits roughly 5.0 to 7.0-inch rims, 205/75R15 fits about 5.50 to 7.50-inch rims, 215/75R15 fits about 5.5 to 7.5-inch rims depending on the product, 225/75R15 fits about 6.0 to 8.0-inch rims, and 235/75R15 fits about 6.0 to 8.5-inch rims. The 875-16.5 fitment confirms a 16.5-inch wheel diameter, though rim-width figures are not the same kind of focus there as on the 15-inch van radials.
Those ranges are why wheel width matters when moving between sizes on 1989 GMC Vans, even if the wheel diameter stays at 15 inches. A G1500 owner moving among 195, 205, and 215 widths should confirm the actual wheel width before settling on a tire, and the same goes for G2500 owners choosing between 225 and 235 widths. Wheel diameter alone is not enough; the right match comes from diameter, width, and the intended appearance or use of the van.
Can the original 1989 GMC Vans wheels be used with all tire sizes?
Original 1989 GMC Vans wheels can only be shared within the same wheel diameter group. The five metric radial sizes use 15-inch wheels, while the G3500's 875-16.5 requires a 16.5-inch wheel. Within the 15-inch group, some overlap in rim-width range exists, but the acceptable width window is not identical across every size.
That means a stock G1500 or G2500 wheel may accept more than one 15-inch size, but the fit still needs to be checked against the wheel's actual width and the tire's approved range. A G3500 wheel is a different case entirely because 16.5-inch and 15-inch tires do not interchange. Before reusing original wheels on 1989 GMC Vans, verify wheel diameter first, then confirm width and overall clearance so the tire choice supports the van without forcing an avoidable fitment compromise.
Maintenance, Storage & Longevity
How should I store a 1989 GMC Vans when the tires are fitted?
A stored 1989 GMC Vans should sit in a cool, dry, dark space away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment. Keep tires clean, maintain inflation, and move the van periodically so the same footprint is not carrying the full load month after month. The G3500's bias-ply 875-16.5 fitment is generally more prone to temporary flat-spotting during long static storage than the radial sizes used on G1500 and G2500 models.
Good storage habits matter because collector vans often age out their tires long before they wear them out. If the van will be parked for an extended season, many owners either roll it occasionally or support it in a way that reduces constant load on one contact patch. A breathable cover and clean floor help, but the biggest gains come from minimizing heat, light, and ozone exposure so the sidewalls stay healthier between drives.
How long do tires on a 1989 GMC Vans typically last?
Tires on a 1989 GMC Vans usually age out before they wear out, especially on low-mileage collector or hobby vehicles. A good rule is to evaluate them carefully once they reach the five-to-seven-year range and to treat around ten years as a serious replacement point regardless of remaining tread depth. The date code on the tire is the best guide to actual age, since a van may sit for long periods and still carry a tire that looks decent from a distance.
That principle applies whether your van uses 15-inch radials or the G3500's 16.5-inch bias-ply fitment. Heat cycles, sunlight, storage conditions, and underinflation often shorten useful life more than mileage does on specialty or occasional-use vehicles. If you are preparing a 1989 GMC Vans for regular road use after long storage, age should be one of the first things checked, even before deciding whether the current sidewall style or brand is the one you ultimately want to keep.
How often should tires on a 1989 GMC Vans be inspected?
Tires on a 1989 GMC Vans should be inspected before every drive, with a more thorough check before any longer highway outing. Look for sidewall cracking, cuts, tread separation, uneven wear, bulges, and signs of pressure loss, and check that each tire is holding air consistently. Vans that spend long stretches parked deserve extra attention because damage from age and storage can develop even when the tread still appears serviceable.
A quick pre-drive routine can prevent most tire-related surprises. On a heavier or older van, also look at valve stems, the condition of the spare, and any visible wheel damage or rust at the bead area. If a 1989 GMC Vans has been sitting, inspect the tires before rolling it out of the garage rather than after the trip begins, because many age-related failures show themselves first as cracking, flat-spots, or pressure loss at the start of renewed use.
Restoration & Authenticity
What tires were originally fitted to the 1989 GMC Vans G1500?
For 1989 GMC Vans G1500 models, the factory-era fitment theme is radial construction on 15-inch wheels, using one of the metric sizes associated with that model: 195/75R15, 205/75R15, or 215/75R15. By the late 1980s, radial tires were standard practice on mainstream American vans, so a radial construction is the historically appropriate starting point. Sidewall treatment could vary depending on how the van was positioned, whether as a passenger van, conversion van, or utility vehicle.
That means originality questions for a G1500 usually center on the exact size and the right sidewall look rather than on bias-ply versus radial construction. If the van is being restored for judging, confirm the original market presentation through factory literature, surviving photos, or marque-specific resources. Whitewall width, black sidewall presentation, and overall stance can all affect how authentic the finished van looks, even when the wheel diameter and radial construction are correct.
Does correct tire fitment matter for showing a 1989 GMC Vans?
Correct tire fitment absolutely matters when showing a 1989 GMC Vans, especially if the van is entered in classes that reward period accuracy. Judges and knowledgeable enthusiasts often notice whether the size, construction type, and sidewall style match the era and the model's intended role. On these vans, using the G3500's 16.5-inch bias-ply truck fitment on a lighter-duty van, or using an overtly truck-style sidewall where a passenger-style presentation would be more appropriate, can change the overall impression quickly.
The important point is that authenticity is not only about whether the tire physically fits the wheel. A restoration-minded G1500 or G2500 owner may focus on whitewall width and overall appearance, while a G3500 owner may care more about preserving the heavy-duty commercial look. Event standards vary, so marque clubs, original brochures, and class-specific judging guides are the best resources when you want your 1989 GMC Vans to align closely with how that model would have appeared when new.
What is the difference between STA Traxion and STA Transport Highway for the 1989 GMC Vans G3500?
For the 1989 GMC Vans G3500, both STA Traxion and STA Transport Highway are offered in 875-16.5 as blackwall bias-ply tires. The two share the same basic size and wheel diameter, but they are distinct series, and even their weights differ slightly, with Traxion at 38 pounds and Transport Highway at 40 pounds. Both preserve the truck-style construction and visual character that separate the G3500 from the 15-inch radial van fitments used on lighter models.
A G3500 owner choosing between them should think in terms of the van's intended look and the kind of period-correct heavy-duty presentation desired, then confirm the wheel and application details before ordering. Since both stay within the same 875-16.5 bias-ply format, the decision is not about converting the van to a different construction style. It is more about choosing the series that best suits the restoration direction or commercial-duty image of the specific G3500.
Safety & Road Use
Are 1989 GMC Vans tires safe for highway driving?
1989 GMC Vans tires can be suitable for highway driving when the tire size, construction, condition, and inflation all match the van's application. Among the sizes here, BFGoodrich All-Terrain T/A KO2 products in 215/75R15 and 235/75R15 carry an S speed rating, which means a 112 mph ceiling. Other radial and bias-ply products may not present the same speed-letter marking, so the specific sidewall on the tire itself matters more than assuming all products in the size behave the same way.
On an older full-size van, tire condition is only part of the highway-use picture. Suspension wear, alignment, brake condition, steering play, and load distribution can affect confidence and safety just as much as the tire choice, especially on heavier G2500 and G3500 models. Before any sustained highway run in a 1989 GMC Vans, confirm that the tire's speed and load capability match the way the van will actually be driven and loaded, then make sure the rest of the chassis is equally ready.
What inflation pressure should I use for 1989 GMC Vans tires?
Inflation pressure on 1989 GMC Vans depends on the exact tire size and the specific product. Examples include 195/75R15 at 32 to 35 psi depending on the tire, 205/75R15 at 35 psi on several applications, 215/75R15 at 32, 35, or 50 psi depending on product type, 225/75R15 at 32 or 35 psi, and 235/75R15 at 32, 35, or 50 psi depending on the tire. Those figures are tied to each tire's stated load capacity and should not be transferred casually from one size or series to another.
Use the vehicle's original recommendations as the starting point for a stock 1989 GMC Vans, then compare them with the reproduction or replacement tire's own maximum load and pressure information. A passenger-style whitewall radial and an all-terrain radial in the same nominal size may not use the same pressure target in service. The best approach is to match the van's actual size, expected load, and tire type, then fine-tune within the tire maker's guidance rather than inflating by guesswork.
What should I check before taking a 1989 GMC Vans on a longer drive?
Before a longer drive in a 1989 GMC Vans, inspect every tire for sidewall cracking, cuts, bulges, uneven wear, and proper inflation, and do the same for the spare. Look closely at the bead area and valve stems, especially on a van that has been sitting, and confirm that all tires are the correct size for the model. If your van is a G3500, make sure the 16.5-inch bias-ply tires are in sound condition and seated on the correct wheel type.
A longer trip in an older van should always include a broader mechanical check as well. Brakes, steering, cooling, belts, hoses, and wheel bearings can matter just as much as the tires once miles begin to add up. Tire preparation is still the first step because it affects ride, tracking, and heat buildup right away, but the safest road-trip plan for a 1989 GMC Vans treats the tires as one part of a complete readiness check rather than an isolated item.
