1998 GMC Trucks C2500 Tires

A 1998 GMC Trucks C2500 uses either 225/75R16 or 245/75R16 radial tires, depending on the specific Sierra sub-model. Regular cab SL, SLE, and SLT versions use 225/75R16, while H.D. Suspension versions use 245/75R16. Several extended cab trims appear with either size.

That means the first step is not choosing a brand or tread style, but confirming the truck’s exact configuration and the tires already mounted on it. On extended cab models especially, the trim name alone may not narrow it down to one size, so checking the sidewall and wheel setup is the safest approach.

Both primary tire sizes for the 1998 GMC Trucks C2500 are built for a 16-inch wheel. Whether the truck uses 225/75R16 or 245/75R16, the rim diameter stays the same at 16 inches, which keeps wheel diameter simple even though tire width varies by sub-model.

The important point is that the same rim diameter does not mean every wheel is equally suited to both tire sizes. Wheel width still matters, so it is smart to confirm the actual wheel on the truck before moving from one size to the other or replacing a wheel and tire package together.

The 1998 GMC Trucks C2500 has more than one tire size because fitment changes with cab style and suspension configuration. Some regular cab trims use 225/75R16, heavy-duty suspension versions use 245/75R16, and several extended cab models can be found with either size.

That variation means tire selection should follow the truck’s actual setup rather than a broad model name alone. A C2500 that has had wheels changed over the years may no longer match its original trim pattern, so comparing the current tire size, wheel width, and sub-model details helps avoid ordering the wrong fitment.

Start with the correct size for the truck’s sub-model, because the 1998 GMC Trucks C2500 uses either 225/75R16 or 245/75R16 on a 16-inch rim. Both available options are radial BFGoodrich All-Terrain T/A KO2 tires, so the main differences come from size, rim-width compatibility, load capacity, and tire weight.

A good selection process looks at how the truck is actually used. A work truck, tow vehicle, or lightly driven weekend pickup can all place different priorities on the tire choice, but the foundation stays the same: confirm the size already on the truck, make sure the wheel width suits it, and match the tire to the truck’s duties.

The available tires for the 1998 GMC Trucks C2500 use an RWL sidewall, which means raised white letters. That styling gives these 16-inch truck radials a more traditional light-truck presentation than a plain blackwall and suits the all-terrain character of the BFGoodrich All-Terrain T/A KO2 series.

Sidewall style affects appearance more than fitment, but it still matters on a GMT400-era pickup where visual character is part of the appeal. If the truck is being kept close to a period truck look, raised white letters may be a natural match. The more important check remains choosing the correct tire size before focusing on appearance.

BFGoodrich is the brand available for the 1998 GMC Trucks C2500 in these primary fitments. Both 225/75R16 and 245/75R16 are offered in the All-Terrain T/A KO2 series, giving this truck a consistent tire option across the two main sizes used by the Sierra SL, SLE, and SLT sub-models.

Since the brand choice here is focused rather than broad, the real comparison is between the two fitment sizes and their specifications. Once the correct size is confirmed, useful points to compare include the wheel-width range, load figure at the stated pressure, sidewall presentation, and whether the truck still has its original-style wheel setup.

For a period-style 1998 GMC Trucks C2500, the right starting point is the size that belongs to the truck’s exact sub-model: 225/75R16 for certain regular cab trims or 245/75R16 for heavy-duty suspension versions, with some extended cab models using either. Keeping the proper 16-inch radial fitment preserves the truck’s overall stance and proportions.

Appearance choices then become more meaningful once the size is right. The available BFGoodrich All-Terrain T/A KO2 with raised white letters gives the truck a familiar late-1990s light-truck look, but owners pursuing exact restoration standards should also compare surviving original photos, sales literature, or marque-specific references before settling on presentation details.

The 1998 GMC Trucks C2500 uses radial tires, so staying with the correct radial construction keeps the truck aligned with its era. On a restored or well-kept GMT400 pickup, tire size and sidewall treatment tend to shape the visual result more than construction changes, since both primary fitments are already modern radial sizes.

That makes details like raised white letters, overall width, and keeping the truck on the proper 16-inch wheel especially important. A mismatched size can alter the truck’s look even when the wheel diameter is correct, so restoration-minded owners usually get the best result by confirming sub-model fitment before focusing on cosmetic preferences.

Yes. Modifications can affect tire fitment on a 1998 GMC Trucks C2500 even when the truck still uses a 16-inch wheel. Changes such as aftermarket wheels, altered wheel width, different offset, suspension work, or ride-height adjustments can influence whether 225/75R16 or 245/75R16 remains the most appropriate size for the truck.

A modified truck should be checked at the wheel and fender level rather than judged by trim name alone. Steering clearance, suspension clearance, and the actual wheel dimensions matter, especially on extended cab versions that already appear with either primary size. That verification is worth doing before mounting replacement tires or putting the truck back into service.

Before driving a 1998 GMC Trucks C2500 on new tires, inspect the wheels for correct diameter and condition, make sure the size matches the truck’s sub-model, and verify that inflation is set appropriately for the tire. It is also wise to look over the suspension, steering components, and brake hardware on a truck that may have seen years of work use.

A short initial road test can reveal rubbing, vibration, or pull that is easier to correct early. Rechecking lug torque, watching for any unusual air loss, and confirming clearance at full steering lock are sensible follow-up steps. Those basics matter whether the truck is a daily driver, a tow vehicle, or a low-mile preserved pickup.

Collector-use tires on a 1998 GMC Trucks C2500 should be maintained with regular pressure checks, visual inspection for cracking, cuts, bulges, and uneven wear, and periodic movement of the truck so the tires do not sit loaded in one position for long stretches. Even a low-mile pickup ages its tires while parked.

Storage conditions matter just as much as mileage. Keeping the truck away from prolonged heat, direct sunlight, moisture, and ozone-producing equipment helps preserve tire condition over time. Before any longer drive, it is smart to inspect tread and sidewalls again and make sure the tires still suit the wheel setup currently on the truck.