1980 Chevrolet Trucks C20 Custom Deluxe Tires

The 1980 Chevrolet Trucks C20 Custom Deluxe uses four primary tire sizes across the covered configurations: 7.50R16, 8.75R16.5, 9.50R16.5, and 950-16.5. The first three are radial fitments used on certain 6400 GVWR versions, while 950-16.5 is a bias-ply size used on the 8600 GVWR applications, including Bonus Cab front and rear positions listed here.

Choosing correctly depends on the truck's exact sub-model and wheel diameter, not just the year and model name. A C20 that has been modified over the years may no longer have its original wheels, so the safest next step is to confirm the truck's GVWR configuration and measure the actual rim diameter before selecting a replacement tire.

Two rim diameters appear on the 1980 Chevrolet Trucks C20 Custom Deluxe: 16-inch and 16.5-inch. The 7.50R16 radial uses a 16-inch rim, while 8.75R16.5, 9.50R16.5, and 950-16.5 all use a 16.5-inch rim. That makes wheel diameter one of the most important fitment checks on this truck.

A 16-inch tire cannot be treated as the same fitment as a 16.5-inch tire, even when the sizes seem close at a glance. Many older trucks have seen wheel swaps during their working lives, so it is worth checking the wheel itself before comparing tires, especially when moving between 6400 and 8600 GVWR applications.

The 1980 Chevrolet Trucks C20 Custom Deluxe covers several distinct configurations, including different stud setups, GVWR ratings, and Bonus Cab applications. Those differences lead to multiple tire fitments, including 16-inch and 16.5-inch radial sizes on certain 6400 GVWR versions and a 950-16.5 bias-ply size on the 8600 GVWR trucks.

That means tire selection starts with identifying the exact truck rather than picking a size from the model name alone. The practical checks are the vehicle's sub-model details, its current wheel diameter, and whether it still carries the type of tire construction associated with that specific configuration.

A 950-16.5 tire for the 1980 Chevrolet Trucks C20 Custom Deluxe should first match the truck's 8600 GVWR configuration and 16.5-inch wheel setup. The available choices are bias-ply blackwall truck tires from STA, offered in Traxion and Super Transport series, both with Military & Truck attributes and the same 2780@60 psi maximum load capacity.

Once the size and wheel diameter are confirmed, the decision becomes one of series character, wheel-width compatibility, and the kind of period truck appearance you want to preserve. Checking that the wheel falls within the product rim-width range and making sure the truck still uses the correct heavy-duty wheel setup will help avoid ordering the wrong tire.

Current product coverage for this 1980 Chevrolet Trucks C20 Custom Deluxe centers on STA in the 950-16.5 size. That brand appears in both Traxion and Super Transport series for the heavy-duty bias-ply applications. The available products are aimed at traditional truck use rather than cosmetic passenger-car styling choices.

Brand choice matters most after the correct size and wheel diameter have already been confirmed for the truck's exact configuration. On a vehicle with multiple primary fitments like this one, selecting by brand first can lead to the wrong tire, so it is better to narrow the truck's fitment before comparing series and construction details.

For the 950-16.5 heavy-duty fitment on the 1980 Chevrolet Trucks C20 Custom Deluxe, the available tire series are STA Traxion and STA Super Transport. Both are blackwall bias-ply truck tires and both carry the same listed maximum load capacity of 2780@60 psi, making the comparison more about application character than dramatic specification differences.

That kind of series choice is most relevant once the truck has been confirmed as an 8600 GVWR, 16.5-inch-wheel application. Buyers restoring a work-oriented truck may focus on the traditional look and construction, while road-use planning should still include wheel-width verification and a general condition check of the truck's wheels and suspension.

A period-style choice starts with staying in the correct primary size for the truck's exact configuration. On the 8600 GVWR applications covered here, 950-16.5 bias-ply tires carry the most traditional heavy-duty truck presentation, while certain 6400 GVWR versions use radial sizes that reflect a different setup within the same model line.

Appearance only works when the fitment is right, so wheel diameter and configuration should be settled before comparing tread or series names. If exact restoration authenticity matters beyond general period style, the best reference point is vehicle-specific historical documentation or marque expertise tied to the truck's original build.

Tire construction can change the visual character of a restored 1980 Chevrolet Trucks C20 Custom Deluxe, especially on a truck that still carries its original-style wheel setup. The 950-16.5 fitment is a bias-ply truck tire, which supports a more traditional heavy-duty presentation, while the other primary sizes on certain sub-models are radial applications.

That difference matters because restorations are often judged as much by stance and overall presentation as by paint and trim. Matching the tire construction to the truck's actual configuration helps preserve the intended look, and it also keeps the buyer from crossing between 16-inch and 16.5-inch wheel setups by mistake.

Modifications can absolutely affect tire fitment on a 1980 Chevrolet Trucks C20 Custom Deluxe. Wheel swaps, suspension changes, altered ride height, or brake upgrades can change the wheel diameter, wheel width, and available clearance, even when the truck still appears close to stock. That matters even more on a vehicle that originally used both 16-inch and 16.5-inch fitments.

A truck that has lived a working life may have been changed more than once, so visual assumptions are risky. Before replacing tires, confirm the actual wheel dimensions on the vehicle and look for any rubbing points at the fenders, steering stops, or suspension components that could affect the chosen size.

Before putting a 1980 Chevrolet Trucks C20 Custom Deluxe back on the road with new tires, inspect the wheels for damage, check that lug hardware matches the wheel and stud setup, and make sure the tires are inflated appropriately for service. It is also smart to look over the steering, suspension, and brake components on a truck of this age.

A fresh set of tires cannot compensate for bent wheels, loose front-end parts, or worn springs that change clearance under load. After installation, recheck air pressure, watch for uneven contact or rubbing, and pay attention to how the truck tracks and steers during its first miles back in regular use.

Tires on a collector 1980 Chevrolet Trucks C20 Custom Deluxe should be checked regularly for air loss, tread wear, cracking, cuts, and sidewall damage, even if the truck is driven only occasionally. Older trucks often spend long periods parked, and that makes routine visual inspection just as important as miles-driven maintenance.

Good storage habits help as much as road care. Keeping the truck away from prolonged sunlight, standing moisture, and ozone sources can support tire condition over time, while periodic pressure checks and short inspection drives help catch problems before a longer trip or a load-carrying outing exposes them.