The 1980 Chevrolet Trucks C20 Suburban sits in the era when full-size GM utility vehicles were expected to handle family hauling, work duty, and long-distance travel with equal confidence. That matters when choosing tires, because this Suburban can wear more than one primary size depending on sub-model and GVWR, with both 16-inch and 16.5-inch wheel applications in the mix. Bias-ply fitments include 875-16.5 and 950-16.5, while radial fitments include 7.50R16 and 9.50R16.5. The real key is matching the tire to the truck's exact configuration and wheel setup before narrowing the choice to the available series and construction style.
Which Tire Size Is Right for The 1980 Chevrolet Trucks C20 Suburban
Four primary tire sizes are used on the 1980 Chevrolet Trucks C20 Suburban, and the right one depends on the truck's exact sub-model, GVWR, construction type, and wheel diameter. Since both 16-inch and 16.5-inch applications appear here, the first step is confirming the specific Suburban configuration and checking the wheels currently on the vehicle before choosing a tire.
In the size 875-16.5, the 8.75 refers to the nominal section width in inches and the 16.5 identifies the wheel diameter. This is a bias-ply truck tire size, making it a traditional fitment choice for certain 7100 GVWR C20 Suburban configurations. Available options come from STA in Traxion and Transport Highway series, both in blackwall form with a military and truck-oriented character. This size makes sense when preserving the original style of a 16.5-inch bias-ply setup is part of the goal.
The size 950-16.5 uses a nominal 9.50-inch section width and mounts on a 16.5-inch wheel. As a bias-ply fitment, it suits C20 Suburban applications that retained the larger 16.5-inch truck wheel and a traditional construction style. STA offers this size in blackwall Traxion and Super Transport versions, with a stated rim width range of 6.50 to 6.75 inches and a maximum load rating of 2780 at 60 psi. It is an important size to evaluate carefully on higher-GVWR trucks or any Suburban that still wears its original-style 16.5-inch wheels.
The 7.50R16 designation indicates a radial tire with an approximately 7.50-inch section width for a 16-inch wheel, and the R marks radial construction. On the 1980 C20 Suburban, this size appears on certain 7500 GVWR sub-models, making it distinct from the 16.5-inch applications elsewhere in the range. A radial fitment changes the selection conversation because wheel diameter becomes especially important before any purchase decision. This size deserves close attention on trucks that may have had wheels changed over the years, since 16-inch and 16.5-inch setups are not interchangeable.
The size 9.50R16.5 identifies a radial tire with an approximate 9.50-inch section width built for a 16.5-inch wheel. It is a radial primary fitment for certain 7500 GVWR C20 Suburban versions, offering a different construction choice while keeping the 16.5-inch wheel diameter found on some heavier-duty setups. Product selection should start with confirming that the truck actually has 16.5-inch wheels rather than 16-inch wheels, especially on vehicles that have seen service replacements or modifications. This size is most relevant when maintaining the truck's original wheel diameter while using a radial construction.
1980 Chevrolet Trucks C20 Suburban Sub-Model Tires
Sub-model fitment on the 1980 Chevrolet Trucks C20 Suburban is not one-size-fits-all, because tire choice changes with GVWR and, in some cases, construction type. Checking the exact Custom Deluxe, Scottsdale, or Silverado configuration matters before selecting a tire, especially where 16-inch and 16.5-inch wheel applications overlap within the same model line.
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1980 Chevrolet Trucks C20 Suburban Custom Deluxe (GVWR 7100)
This 7100 GVWR Custom Deluxe uses bias-ply tire fitments, with the decision centered on the correct 16.5-inch application for the truck's existing wheel setup. Tire selection here is mainly about preserving the proper construction style and choosing between the available truck-oriented series in the matching size.
1980 Chevrolet Trucks C20 Suburban Custom Deluxe (GVWR 7500)
This 7500 GVWR Custom Deluxe can use either radial or bias-ply primary fitments, and wheel diameter becomes a critical checkpoint before choosing a tire. Selection depends on whether the Suburban is on 16-inch or 16.5-inch wheels and whether the goal is to retain the original construction approach or stay with the current setup.
1980 Chevrolet Trucks C20 Suburban Scottsdale (GVWR 7100)
The 7100 GVWR Scottsdale follows the same bias-ply fitment pattern seen on other 7100 GVWR C20 Suburbans, using 16.5-inch applications. That keeps the choice focused on the right bias-ply size and the preferred truck tire series rather than on switching between multiple wheel diameters.
1980 Chevrolet Trucks C20 Suburban Scottsdale (GVWR 7500)
The 7500 GVWR Scottsdale brings a mixed fitment picture, with both radial and bias-ply primary sizes appearing across 16-inch and 16.5-inch wheel applications. Tire selection starts with confirming the truck's exact wheel diameter and current configuration before comparing construction style or replacement appearance.
1980 Chevrolet Trucks C20 Suburban Silverado (GVWR 7100)
This 7100 GVWR Silverado uses bias-ply fitments on 16.5-inch wheels, making it a more straightforward Suburban application once the wheel size is confirmed. The main decision is choosing the proper size and the tire series that best suits the truck's intended use and traditional presentation.
1980 Chevrolet Trucks C20 Suburban Silverado (GVWR 7500)
The 7500 GVWR Silverado can be found with both radial and bias-ply primary tire sizes, so it deserves a careful wheel and configuration check before any purchase. That distinction affects both diameter and construction, which in turn shapes whether the truck stays with a traditional bias-ply setup or a radial primary fitment.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1980 Chevrolet Trucks C20 Suburban Tires for Sale
Available choices for the 1980 Chevrolet Trucks C20 Suburban center on STA truck tires in blackwall form. The current product mix covers 875-16.5 and 950-16.5 bias-ply sizes across Traxion, Transport Highway, and Super Transport series, with rim-width and load details especially useful on 950-16.5.
Owners of a 1980 Chevrolet Trucks C20 Suburban usually need to sort out tire size, wheel diameter, bias-ply versus radial fitment, and sub-model differences before comparing products. These FAQs focus on the practical checks that matter most on a truck with multiple primary sizes and mixed 16-inch and 16.5-inch applications.
Tire Size & Fitment
What tire size fits a 1980 Chevrolet Trucks C20 Suburban?
The 1980 Chevrolet Trucks C20 Suburban uses four primary tire sizes: 875-16.5, 950-16.5, 7.50R16, and 9.50R16.5. The correct size depends on the truck's exact sub-model, GVWR, wheel diameter, and whether it uses a bias-ply or radial primary fitment.
That means the first step is not picking a brand or series, but confirming the exact Suburban configuration and the wheels currently on the truck. A 16-inch radial application and a 16.5-inch bias-ply application are very different starting points, so checking the sidewall size and wheel diameter on the vehicle helps avoid choosing the wrong fitment path.
What size rim does a 1980 Chevrolet Trucks C20 Suburban use?
A 1980 Chevrolet Trucks C20 Suburban can use either a 16-inch or 16.5-inch rim, depending on the tire size and sub-model. The 7.50R16 radial uses a 16-inch rim, while 875-16.5, 950-16.5, and 9.50R16.5 use 16.5-inch rims.
This is one of the most important checks on the vehicle because a 16-inch tire does not mount on a 16.5-inch wheel, and a 16.5-inch tire does not mount on a 16-inch wheel. Many older trucks have seen wheel changes over time, so the safest approach is to verify the wheel size on the truck itself before narrowing the search.
Why does the 1980 Chevrolet Trucks C20 Suburban have more than one tire size?
More than one tire size appears on the 1980 Chevrolet Trucks C20 Suburban because fitment varies by sub-model and GVWR, and because both bias-ply and radial primary applications are represented. Some 7100 GVWR versions use bias-ply 16.5-inch sizes, while certain 7500 GVWR versions add radial options in both 16-inch and 16.5-inch formats.
That variety makes identification more important than assumption. Two trucks that look nearly identical can require different tire sizes if their GVWR or wheel setup differs, so the best approach is to confirm the exact sub-model name and inspect the wheel diameter already on the vehicle before selecting a replacement tire.
Bias-Ply & Radial Options
Is 950-16.5 a bias-ply or radial tire for the 1980 Chevrolet Trucks C20 Suburban?
On the 1980 Chevrolet Trucks C20 Suburban, 950-16.5 is a bias-ply primary tire size. It appears on several sub-models, including certain 7100 GVWR and 7500 GVWR configurations, and it uses a 16.5-inch wheel.
That matters because a bias-ply 950-16.5 should be evaluated as a traditional fitment choice rather than confused with the separate 9.50R16.5 radial size. A truck wearing 16.5-inch wheels may still have more than one valid fitment path, so checking both the actual sidewall marking and the truck's exact configuration is the right next step.
Should I use bias-ply or radial tires on a 1980 Chevrolet Trucks C20 Suburban?
Either construction can be correct on a 1980 Chevrolet Trucks C20 Suburban, depending on the specific sub-model and wheel setup. Bias-ply primary fitments include 875-16.5 and 950-16.5, while radial primary fitments include 7.50R16 and 9.50R16.5 on certain 7500 GVWR versions.
The decision should start with what the truck is built to use now, not with a general preference for one construction type. Wheel diameter is especially important here because the Suburban spans both 16-inch and 16.5-inch applications, and a construction change may also involve confirming wheel compatibility, clearance, and the vehicle's intended use.
What should I check before converting my 1980 Chevrolet Trucks C20 Suburban from bias-ply to radial tires?
A conversion from bias-ply to radial tires on a 1980 Chevrolet Trucks C20 Suburban starts with verifying whether the truck has a primary radial fitment for its exact sub-model or whether the vehicle is currently on a different setup. Wheel diameter is critical, since this Suburban uses both 16-inch and 16.5-inch applications across the range.
Beyond the size itself, inspect wheel width, overall wheel condition, and clearance at the fenders and steering components before making a change. It also helps to confirm that the truck has not been altered with aftermarket wheels, suspension changes, or mixed components over the years, because those factors can affect which radial path is realistic.
Choosing the Right Tire
What should I consider when choosing a 950-16.5 tire for a 1980 Chevrolet Trucks C20 Suburban?
Choosing a 950-16.5 tire for a 1980 Chevrolet Trucks C20 Suburban starts with confirming that 950-16.5 is the correct primary size for the truck and that it still uses 16.5-inch wheels. In this size, the available options are bias-ply STA tires in blackwall form, including Traxion and Super Transport series.
From there, compare practical details such as the intended use of the vehicle, the tire series character, and wheel compatibility. The available 950-16.5 products carry a stated rim width range of 6.50 to 6.75 inches and a maximum load rating of 2780 at 60 psi, so those details deserve a careful check against the actual wheel and the truck's needs.
What brands offer tires for the 1980 Chevrolet Trucks C20 Suburban?
The currently available tires for the listed 1980 Chevrolet Trucks C20 Suburban fitments come from STA. Within the supported product range, STA covers the 875-16.5 and 950-16.5 bias-ply sizes used on several C20 Suburban configurations.
Brand choice is only one part of the decision on this vehicle. Since the fitment spread includes multiple sizes, two wheel diameters, and both bias-ply and radial primary applications, it is more important to confirm the exact size and construction first, then compare the available STA series that match the truck's configuration.
What tire series are available for the 1980 Chevrolet Trucks C20 Suburban?
For the currently covered 1980 Chevrolet Trucks C20 Suburban products, the available tire series are STA Traxion, STA Transport Highway, and STA Super Transport. These series appear within the 875-16.5 and 950-16.5 bias-ply sizes rather than across the full range of all Suburban fitments.
Series selection matters after the size and wheel diameter have already been confirmed. Once the correct fitment is established, comparing series helps narrow the choice by tire character and intended use, while still keeping the truck within the proper bias-ply size and blackwall appearance offered for those 16.5-inch applications.
Restoration & Appearance
Which tire should I choose for a period-style 1980 Chevrolet Trucks C20 Suburban?
A period-style tire choice for a 1980 Chevrolet Trucks C20 Suburban usually begins with keeping the correct primary size and construction for the truck's exact sub-model. On many covered configurations, that means a bias-ply 16.5-inch fitment such as 875-16.5 or 950-16.5 rather than shifting immediately to a different wheel and tire combination.
Appearance and authenticity are not always the same thing, so the best result depends on your restoration goal. A truck intended to preserve its original-era stance and visual character often benefits from staying with the proper size and construction first, then choosing among the available series that suit the way the Suburban will be shown or driven.
How does tire construction affect the appearance of a restored 1980 Chevrolet Trucks C20 Suburban?
Tire construction changes the visual character of a restored 1980 Chevrolet Trucks C20 Suburban because bias-ply and radial tires present differently on the vehicle, even when they are both correct fitment paths somewhere within the model range. This Suburban includes traditional bias-ply sizes as well as radial primary sizes on certain configurations.
For a restoration-minded owner, that means construction is not just a driving decision but also an appearance decision. Matching the truck's actual sub-model, wheel diameter, and intended presentation will usually produce a more coherent result than selecting a tire solely by preference, especially on a full-size utility vehicle with multiple authentic-looking fitment directions.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1980 Chevrolet Trucks C20 Suburban?
Yes, modifications can affect tire fitment on a 1980 Chevrolet Trucks C20 Suburban. Wheel swaps, suspension changes, altered ride height, brake conversions, and body modifications can all change the tire size, construction, or wheel diameter that works properly on the truck.
That matters even more here because the Suburban already spans both 16-inch and 16.5-inch applications from the factory fitment range. A truck that no longer wears its original wheels should be measured and inspected before ordering tires, with special attention to wheel diameter, wheel width, steering clearance, and any signs of rubbing at full lock or under load.
What should I inspect before driving a 1980 Chevrolet Trucks C20 Suburban on new tires?
Before driving a 1980 Chevrolet Trucks C20 Suburban on new tires, inspect wheel condition, lug hardware, valve stems, and basic clearance around the fenders, suspension, and steering components. It also helps to verify that all four tires match the intended size and construction for the truck's actual setup.
A quick road-use check should include proper inflation, even seating on the wheel, and a visual look for any interference during steering movement. On an older Suburban, it is also wise to inspect suspension wear, alignment condition, and any signs that the truck has mixed wheel parts from past service, since those issues can affect how a new tire behaves.
How should tires on a collector 1980 Chevrolet Trucks C20 Suburban be maintained?
Tires on a collector 1980 Chevrolet Trucks C20 Suburban should be maintained with regular pressure checks, visual inspections, and periodic evaluation of age and condition even if the truck sees limited mileage. Sidewall cracking, bulges, cuts, uneven wear, and gradual air loss all deserve attention on a low-use vintage truck.
Storage conditions matter as much as mileage on a vehicle like this. Keeping the Suburban away from prolonged sun exposure, excess moisture, and ozone sources helps preserve tire condition, and moving the truck periodically can reduce flat spotting during long storage intervals. Any tire that shows structural deterioration should be replaced before road use.
