1986 GMC Trucks C2500 Tires

The 1986 GMC Trucks C2500 uses either 215/85R16 or 235/85R16, depending on the exact sub-model. Standard C2500 configurations covered here use 215/85R16, while Bonus Cab versions use 235/85R16. Both are radial tire sizes for 16-inch wheels.

The important step is confirming the truck’s exact configuration before choosing a tire. A C2500 that has been modified, fitted with different wheels, or mixed with parts from another setup may no longer match the original fitment pattern, so wheel size, width, and clearance should be checked before purchase.

The covered tire fitments for the 1986 GMC Trucks C2500 use a 16-inch rim diameter. That applies to both primary tire sizes, 215/85R16 and 235/85R16, so the difference between them is not wheel diameter but the tire size tied to the specific truck configuration.

A matching rim diameter is only the first part of fitment. Wheel width, actual wheel type, and any aftermarket changes still matter, especially on older trucks that may have replacement wheels or suspension work. Those checks become especially important before moving from one listed size category to another.

More than one tire size appears because the 1986 GMC Trucks C2500 was offered in different sub-model configurations. The standard C2500 versions in this fitment group use 215/85R16, while Bonus Cab versions use 235/85R16. Both remain radial tires on 16-inch rims.

That means the correct choice starts with identifying the truck itself, not simply picking the larger or more common size. Cab style, stud configuration, and the way the truck is set up can all affect which primary fitment belongs on it, so the actual wheel and vehicle setup should be confirmed before installation.

Start with the truck’s correct primary size. A standard 1986 GMC Trucks C2500 configuration uses 215/85R16, while a Bonus Cab uses 235/85R16. After that, compare radial construction, wheel compatibility, and any product details that matter for how the truck is driven, worked, or maintained.

A useful tire choice for this C2500 should also reflect the truck’s real condition. Original wheels, replacement wheels, suspension changes, and hauling expectations all influence what makes sense within the proper size. The right decision usually comes from matching the tire to the truck’s exact configuration first, then to its intended use.

For the covered product selection on the 1986 GMC Trucks C2500, 235/85R16 is available with an RWL sidewall, meaning raised white letters. That sidewall treatment appears on the BFGoodrich All-Terrain T/A KO2 offered in the Bonus Cab size range.

Sidewall style affects appearance as much as specification, especially on an older pickup where the tire is a visible part of the truck’s stance. Even so, sidewall preference should come after confirming the proper size, wheel compatibility, and intended use, since a good-looking tire still needs to match the truck’s actual fitment requirements.

BFGoodrich appears in the current product selection for the 1986 GMC Trucks C2500, specifically in the 235/85R16 fitment used on Bonus Cab applications. That available tire is the All-Terrain T/A KO2 radial, a light-truck-style offering with raised white letters.

Brand is only one part of the decision on a truck like this. The better approach is to confirm the correct size first, then compare the available tire’s wheel-width specification, load-related rating details, sidewall style, and overall use case. That keeps the choice centered on fitment and function rather than the name on the sidewall alone.

A period-style starting point for a 1986 GMC Trucks C2500 is the correct original-size category for the truck’s configuration: 215/85R16 for the standard versions covered here and 235/85R16 for Bonus Cab models. Since both primary fitments are radial, the appearance decision is more about size, stance, and sidewall presentation than bias-ply versus radial.

For a restoration-oriented truck, preserving the proper size relationship usually matters more than chasing a generic truck tire look. Owners seeking exact historical presentation should also compare surviving photos, factory literature, or marque-specific references, because a tire that looks right in the proper size is not automatically the exact original visual treatment.

Correct tire fitment matters because it influences how a restored 1986 GMC Trucks C2500 sits, fills the wheel opening, and presents itself overall. Using the proper size category for the exact sub-model helps keep the truck visually consistent with its intended configuration, whether that means 215/85R16 or 235/85R16.

Fitment also affects the restoration beyond appearance. The right rim diameter and a suitable wheel setup help avoid clearance issues and keep the truck usable on the road. Even on a cosmetic build, tires that match the vehicle’s true configuration usually support a more convincing and better-sorted result than a guess based only on looks.

Yes. A 1986 GMC Trucks C2500 may no longer match its original tire fitment if it has aftermarket wheels, suspension changes, altered ride height, or replacement axles and brake components. Those changes can affect whether 215/85R16 or 235/85R16 remains the right working size on the truck.

Even when the rim diameter stays at 16 inches, wheel width and clearance can change enough to matter. A careful check of front steering space, rear clearance, and the actual wheel dimensions helps avoid choosing a tire only by the factory size pattern when the truck’s current setup has already moved away from stock.

Before driving on new tires, inspect the wheels for damage, confirm the tire size matches the truck’s exact configuration, and make sure the tires are mounted on the correct 16-inch rims. It is also smart to check valve stems, lug hardware, visible suspension wear, and any signs of rubbing at full steering lock.

A road-ready inspection should also include inflation pressure, tread and sidewall condition, and a close look for any contact points once the truck is on the ground. Older pickups often have changes or wear that are easy to miss, so a short, cautious test drive followed by a recheck can catch issues early.

Tires on a collector-era 1986 GMC Trucks C2500 should be checked regularly for air loss, uneven wear, sidewall cracking, cuts, bulges, and signs of age-related hardening. Even a truck that sees limited mileage can develop tire problems simply from long storage, sunlight exposure, and time spent parked in one position.

Routine maintenance also means keeping inflation consistent and storing the truck away from prolonged heat, moisture, and ozone sources when possible. Moving the vehicle occasionally and inspecting the tires before each meaningful drive helps catch developing issues early, which is especially important on an older three-quarter-ton truck with real weight and load capability.