The 1980 Chevrolet Trucks C20 Silverado sits in the square-body era that made Chevrolet pickups a long-running favorite for work, towing, and restoration alike. A truck like this often comes down to practical fitment details rather than broad styling cues, especially when wheel and GVWR combinations can change the tire story. For this exact model, tire fitment spans 7.50R16, 8.75R16.5, 9.50R16.5 radial sizes and a 950-16.5 bias-ply fitment, depending on sub-model configuration. That means the real choice is not just brand or tread style, but confirming studs, GVWR, and wheel diameter first. Owners aiming for dependable road use or restoration-minded appearance should start with the truck’s exact setup before selecting a tire.
Which Tire Size Is Right for The 1980 Chevrolet Trucks C20 Silverado
Four primary tire sizes apply to the 1980 Chevrolet Trucks C20 Silverado, and they do not all serve the same truck configuration. Fitment varies by sub-model, construction, and wheel diameter, with both 16-inch and 16.5-inch rims in use. Before choosing a tire, the first step is confirming the exact sub-model and wheel diameter, since that determines whether the truck uses one of the radial sizes or the 950-16.5 bias-ply fitment.
Fit(s): (7/16 & 1/2 inch studs)(GVWR 6400) and (9/16 inch studs)(GVWR 6400)
Construction: Radial|Rim: 16 in
7.50R16 is a vintage numeric radial size in which 7.50 refers to the nominal section width in inches, R indicates radial construction, and 16 identifies the rim diameter. On this C20 Silverado, it is one of the radial fitments used with certain 6400 GVWR sub-model configurations. Its format reflects a traditional truck sizing convention rather than a modern P-metric passenger size. This is the size to evaluate when the truck has 16-inch wheels and the matching sub-model setup, especially if preserving a period truck look with radial construction matters.
Fit(s): (7/16 & 1/2 inch studs)(GVWR 6400) and (9/16 inch studs)(GVWR 6400)
Construction: Radial|Rim: 16.5 in
8.75R16.5 uses a vintage numeric radial format, with 8.75 indicating nominal section width, the R marking radial construction, and 16.5 showing the wheel diameter. For the 1980 C20 Silverado, this size appears on certain 6400 GVWR configurations that use 16.5-inch wheels rather than 16-inch rims. That wheel diameter difference is critical, because a 16.5-inch tire cannot be treated as interchangeable with a 16-inch setup. This size deserves close attention when confirming the truck’s existing wheels and keeping the fitment aligned with the correct sub-model.
Fit(s): (7/16 & 1/2 inch studs)(GVWR 6400) and (9/16 inch studs)(GVWR 6400)
Construction: Radial|Rim: 16.5 in
9.50R16.5 is another vintage numeric radial truck size, with 9.50 representing nominal section width and 16.5 indicating the required rim diameter. On this Chevrolet C20 Silverado, it is also tied to certain 6400 GVWR sub-models that use radial construction on 16.5-inch wheels. Compared with other applicable sizes, its role is defined less by styling choice and more by matching the truck’s exact wheel and configuration. It is the right size to investigate when the truck is already set up for a 16.5-inch radial fitment and originality of overall stance matters.
Fit(s): (7/16 & 1/2 inch studs)(GVWR 8600), (9/16 inch studs)(GVWR 8600), Bonus Cab (7/16 & 1/2 inch studs)(GVWR 8600) Front, Bonus Cab (7/16 & 1/2 inch studs)(GVWR 8600) Rear, Bonus Cab (9/16 inch studs)(GVWR 8600) Front, and Bonus Cab (9/16 inch studs)(GVWR 8600) Rear
Construction: Bias Ply|Rim: 16.5 in
950-16.5 is a numeric bias-ply truck size, with 950 standing for an approximate 9.50-inch nominal section-width class and 16.5 indicating rim diameter. On the 1980 C20 Silverado, this size is used on the 8600 GVWR configurations, including Bonus Cab front and rear applications shown here. Available choices include STA tires in the Traxion and Super Transport series, both in Blackwall form with Military & Truck character. This is the size to focus on when the truck retains its 16.5-inch heavy-duty bias-ply setup and a traditional work-truck presentation is part of the goal.
1980 Chevrolet Trucks C20 Silverado Sub-Model Tires
Sub-model fitment matters on the 1980 Chevrolet Trucks C20 Silverado because tire size changes with GVWR and wheel setup. Some covered configurations use radial tires in more than one size, while the 8600 GVWR versions use the 950-16.5 bias-ply fitment, so the exact truck specification should be confirmed before selecting a tire.
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1980 Chevrolet Trucks C20 Silverado (7/16 & 1/2 inch studs)(GVWR 6400)
This 6400 GVWR C20 Silverado configuration uses radial fitments and may be paired with 16-inch or 16.5-inch wheel setups depending on the truck. Tire selection starts with confirming the actual wheel diameter, then matching the truck to the appropriate vintage radial size.
1980 Chevrolet Trucks C20 Silverado (7/16 & 1/2 inch studs)(GVWR 8600)
This 8600 GVWR version uses the 950-16.5 bias-ply fitment on a 16.5-inch rim. That makes construction and wheel confirmation especially important, particularly for owners trying to keep a heavy-duty period truck appearance.
1980 Chevrolet Trucks C20 Silverado (9/16 inch studs)(GVWR 6400)
This 6400 GVWR configuration also uses radial fitments rather than the 950-16.5 bias-ply size. The practical decision is confirming whether the truck has 16-inch or 16.5-inch wheels before narrowing the choice to the proper radial size.
1980 Chevrolet Trucks C20 Silverado (9/16 inch studs)(GVWR 8600)
This 8600 GVWR C20 Silverado uses the 950-16.5 bias-ply size. Buyers should approach it as a heavy-duty 16.5-inch fitment and compare available tires with attention to wheel width, load capacity, and intended truck use.
1980 Chevrolet Trucks C20 Silverado Bonus Cab (7/16 & 1/2 inch studs)(GVWR 8600) Front
The front fitment for this Bonus Cab 8600 GVWR configuration is 950-16.5 in bias-ply construction. Tire selection should stay focused on the correct 16.5-inch heavy-duty setup and the type of period-style work-truck presentation desired.
1980 Chevrolet Trucks C20 Silverado Bonus Cab (7/16 & 1/2 inch studs)(GVWR 8600) Rear
The rear fitment for this Bonus Cab 8600 GVWR configuration also uses 950-16.5 bias-ply tires. Matching the rear tire to the truck’s wheel specification and overall load-carrying role is more important here than simply choosing by appearance alone.
1980 Chevrolet Trucks C20 Silverado Bonus Cab (9/16 inch studs)(GVWR 8600) Front
This Bonus Cab front application uses the 950-16.5 bias-ply size on a 16.5-inch wheel. Owners should stay alert to wheel-width compatibility and the truck’s actual heavy-duty setup before choosing among the available tire series.
1980 Chevrolet Trucks C20 Silverado Bonus Cab (9/16 inch studs)(GVWR 8600) Rear
This rear Bonus Cab application remains on the same 950-16.5 bias-ply fitment. That keeps the decision centered on selecting the right heavy-duty truck tire within the correct size rather than mixing constructions or wheel diameters.
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 Silverado Tires for Sale
Available product choices center on 950-16.5, with STA offerings in the Traxion and Super Transport series. Both are Blackwall bias-ply truck tires with Military & Truck character, 16.5-inch rim fitment, and made-to-order heavy-duty replacement focus.
Common questions for the 1980 Chevrolet Trucks C20 Silverado usually center on which tire size matches the exact GVWR and wheel setup, how bias-ply and radial fitments differ across sub-models, and what to inspect before putting a square-body truck back on the road.
Tire Size & Fitment
What tire size fits a 1980 Chevrolet Trucks C20 Silverado?
The 1980 Chevrolet Trucks C20 Silverado uses four primary tire sizes across its covered configurations: 7.50R16, 8.75R16.5, 9.50R16.5, and 950-16.5. The first three are radial sizes, while 950-16.5 is a bias-ply fitment used on the 8600 GVWR versions, including the Bonus Cab front and rear applications shown here.
That means there is no single universal tire size for every C20 Silverado in this group. The important first step is confirming the truck’s exact sub-model, GVWR, and wheel diameter before choosing a tire, because 16-inch and 16.5-inch wheels are both part of the fitment picture and the construction type also changes with configuration.
What size rim does a 1980 Chevrolet Trucks C20 Silverado use?
A 1980 Chevrolet Trucks C20 Silverado in this fitment group uses either a 16-inch or 16.5-inch rim, depending on the exact configuration. The 7.50R16 radial size uses a 16-inch rim, while 8.75R16.5, 9.50R16.5, and 950-16.5 all use 16.5-inch rims.
Wheel diameter should be confirmed before anything else because a 16-inch tire and a 16.5-inch tire are not interchangeable. Once the wheel diameter is known, the next step is checking the truck’s GVWR and sub-model details so the tire size, construction, and wheel-width requirements all stay aligned with the actual setup on the vehicle.
Do all 1980 Chevrolet Trucks C20 Silverado sub-models use the same tire size?
No, the covered 1980 Chevrolet Trucks C20 Silverado sub-models do not all use the same tire size. The 6400 GVWR configurations use radial fitments that can be 7.50R16, 8.75R16.5, or 9.50R16.5, while the 8600 GVWR versions use the 950-16.5 bias-ply size.
That difference is why the truck should be identified by more than year, make, and model alone. GVWR, stud configuration, and actual wheel diameter all help narrow the fitment, and those details matter more on a work-oriented truck like this than simply choosing a tire that looks close in width.
Choosing the Right Tire
What should I consider when choosing a 950-16.5 tire for a 1980 Chevrolet Trucks C20 Silverado?
A 950-16.5 tire for this C20 Silverado should first be matched to the correct 8600 GVWR configuration and a true 16.5-inch wheel. The available options here are bias-ply STA truck tires, so the key comparisons are tire series, Blackwall presentation, rim-width compatibility, and heavy-duty truck character rather than switching among multiple sidewall treatments.
The practical details matter just as much as the size marking. Compare the wheel width against the tire’s 6.50 to 6.75 inch range, consider the truck’s intended use, and look at the listed load capacity of 2780 at 60 psi so the tire choice stays appropriate for the vehicle’s working role and overall setup.
What brands offer tires for the 1980 Chevrolet Trucks C20 Silverado?
The available products shown for the 1980 Chevrolet Trucks C20 Silverado are from STA. In the 950-16.5 size, the choices include the Traxion and Super Transport series, both aimed at truck use and both built as bias-ply Blackwall tires.
Because the current product selection is focused on one brand in this size, the buying decision comes down to comparing the series and their specifications rather than choosing between several manufacturers. Owners should still start with the correct sub-model and wheel diameter, since a truck set up for one of the radial sizes needs a different fitment path entirely.
What tire series are available for the 1980 Chevrolet Trucks C20 Silverado?
For the 950-16.5 fitment on the 1980 Chevrolet Trucks C20 Silverado, the available tire series are STA Traxion and STA Super Transport. Both are bias-ply truck tires in Blackwall form and both share the same listed maximum load capacity of 2780 at 60 psi.
That makes the comparison more about the tire line and intended presentation than about basic fitment differences. A buyer should still check wheel width, confirm the 16.5-inch rim, and keep the truck’s use in mind, especially on an 8600 GVWR setup where load-carrying character is part of the reason this heavier-duty size is used.
Restoration & Appearance
Which tire should I choose for a period-style 1980 Chevrolet Trucks C20 Silverado?
A period-style choice starts with the tire size and construction that belong to the truck’s exact configuration. On this 1980 Chevrolet Trucks C20 Silverado, that could mean one of the vintage-style radial sizes on certain 6400 GVWR versions or the 950-16.5 bias-ply fitment on the 8600 GVWR trucks and Bonus Cab applications.
Appearance follows fitment, not the other way around. A square-body truck looks most convincing when the wheel diameter, tire profile, and construction stay consistent with the setup it actually uses, so restoration-minded owners should verify the truck’s configuration first and then compare the available tire series within the correct size.
How does tire construction affect the appearance of a restored 1980 Chevrolet Trucks C20 Silverado?
Tire construction can noticeably change how a restored 1980 Chevrolet Trucks C20 Silverado presents, even before the truck moves. The 950-16.5 bias-ply fitment gives the heavier-duty 8600 GVWR versions a more traditional truck look, while the radial sizes used on certain 6400 GVWR configurations bring a different sidewall shape and overall visual character.
That does not make one construction automatically more correct for every restoration. The better approach is to match the tire type to the truck’s exact sub-model and wheel setup, then use period photos, build references, or marque-specific guidance if exact appearance authenticity matters beyond simply capturing the right era and stance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1980 Chevrolet Trucks C20 Silverado?
Yes, modifications can affect tire fitment on a 1980 Chevrolet Trucks C20 Silverado. If the truck has aftermarket wheels, altered suspension height, brake changes, or body modifications, the original relationship between tire size, wheel diameter, and clearance may no longer match the way the truck left the factory.
That matters even more here because both 16-inch and 16.5-inch wheel setups appear across the covered configurations. Any change in wheel width, offset, or ride height should be checked carefully against steering clearance, fender space, and the intended tire construction before new tires are installed or an existing fitment is assumed to still be suitable.
What should I inspect before driving a 1980 Chevrolet Trucks C20 Silverado on new tires?
Before driving a 1980 Chevrolet Trucks C20 Silverado on new tires, inspect the wheels for the correct diameter and condition, confirm lug hardware matches the truck’s setup, and make sure the tires are mounted in the correct size and construction for that exact configuration. Tread and sidewall condition matter on used tires, but wheel condition matters just as much on a truck of this age.
A short pre-drive check should also include air pressure, valve stems, visible clearance at the front and rear, and any signs of rubbing during steering movement. It is also wise to look over suspension and steering components, since worn bushings, springs, or alignment issues can affect how a newly mounted tire behaves on the road.
How should tires on a collector 1980 Chevrolet Trucks C20 Silverado be maintained?
Tires on a collector 1980 Chevrolet Trucks C20 Silverado should be maintained with regular pressure checks, periodic visual inspection, and attention to age-related deterioration. Even a lightly used square-body truck can develop sidewall cracking, flat spotting, tread separation concerns, or slow air loss if it sits for long periods between drives.
Storage conditions make a difference, especially for a vintage pickup that spends time parked indoors or seasonally. Keeping the truck away from prolonged sunlight, excess moisture, and ozone sources helps preserve the tires, and occasional movement can reduce stress from sitting in one spot while also making it easier to catch wheel, suspension, or clearance issues early.
