The 2001 GMC Trucks Sierra 3500 sits in the era when heavy-duty pickups were expected to handle real work while still offering trim choices that ranged from straightforward utility to more upscale use. Tire selection on this truck is tied directly to configuration, because single-rear-wheel models use 245/75R16 radials while dual-rear-wheel front and rear positions use 225/75R16 radials on 16-inch rims. That makes this page less about old-style construction choices and more about confirming the exact truck setup, then selecting the right LT-size radial within that fitment. Load capacity, rim-width compatibility, and the truck's actual wheel arrangement all matter before putting it back into regular service.
Which Tire Size Is Right for The 2001 GMC Trucks Sierra 3500
The 2001 GMC Trucks Sierra 3500 uses two primary tire sizes, and the right one depends on whether the truck is a single-rear-wheel or dual-rear-wheel configuration. Both sizes are radial tires for 16-inch rims, so the first step is identifying the exact sub-model and wheel setup before comparing tire specifications, load capacity, and product details.
A 245/75R16 tire uses a 245-millimeter nominal section width, a 75-series aspect ratio, radial construction, and a 16-inch rim diameter. On the 2001 GMC Trucks Sierra 3500, this size is used on the single-rear-wheel SL, SLE, and SLT models, making it the key fitment for owners of standard rear-wheel setups. Available choices in this size include the BFGoodrich All-Terrain T/A KO2 with raised white letter sidewall styling and LT-duty construction. This is the size to evaluate when the truck is not a dually and the goal is maintaining the proper heavy-duty 16-inch fitment.
A 225/75R16 tire carries a 225-millimeter nominal section width, a 75-series profile, radial construction, and a 16-inch rim diameter. On the 2001 GMC Trucks Sierra 3500, this size is tied to dual-rear-wheel configurations, where both the front and rear positions use the narrower 16-inch fitment. In this size, the BFGoodrich All-Terrain T/A KO2 is available with raised white letter sidewalls and LT-rated construction suited to heavy-duty truck use. This fitment matters most when replacing tires on a dually, where the truck's wheel arrangement should be confirmed before selection.
Sub-model fitment on the 2001 GMC Trucks Sierra 3500 depends mainly on whether the truck is single rear wheel or dual rear wheel. Checking the exact configuration matters because the standard models and DRW front and rear positions do not use the same tire size.
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2001 GMC Trucks Sierra 3500 SL
The 2001 GMC Trucks Sierra 3500 SL uses the 245/75R16 radial tire size on a 16-inch rim. Tire selection here centers on choosing the right LT-style radial and confirming wheel width and load suitability for a single-rear-wheel truck.
The 2001 GMC Trucks Sierra 3500 SL (DRW) Front uses the 225/75R16 radial size rather than the wider single-rear-wheel fitment. That makes front tire replacement on a dually a configuration-specific decision, especially when matching the truck's wheel setup and heavy-duty use.
The 2001 GMC Trucks Sierra 3500 SL (DRW) Rear also uses the 225/75R16 radial size on a 16-inch rim. Rear dually tire replacement should focus on the correct narrower size and on maintaining compatibility with the truck's dual-wheel arrangement.
The 2001 GMC Trucks Sierra 3500 SLE uses the 245/75R16 radial tire size in single-rear-wheel form. Choosing among available tires means confirming the truck has the standard rear-wheel setup and comparing LT-duty specifications that suit how the truck is used.
The 2001 GMC Trucks Sierra 3500 SLE (DRW) Front uses 225/75R16 radials, matching the dually fitment rather than the standard SLE size. That distinction matters because front tire replacement on a DRW truck should be based on the actual wheel arrangement, not trim name alone.
The 2001 GMC Trucks Sierra 3500 SLE (DRW) Rear uses the 225/75R16 radial size. For rear dually service, the main priority is keeping the tire size aligned with the truck's DRW wheel package and checking that the chosen tire matches the intended load and road use.
The 2001 GMC Trucks Sierra 3500 SLT uses 245/75R16 radial tires when equipped as a single-rear-wheel truck. Buyers choosing tires for this trim should focus on the correct 16-inch LT fitment and the product details that matter for a working heavy-duty pickup.
The 2001 GMC Trucks Sierra 3500 SLT (DRW) Front uses the narrower 225/75R16 radial size. That makes it important to confirm the truck is the dually version before selecting tires, since the standard SLT fitment uses a different width.
The 2001 GMC Trucks Sierra 3500 SLT (DRW) Rear uses 225/75R16 radial tires on 16-inch rims. Rear tire selection on the dually setup should stay centered on that fitment and on compatibility with the truck's dual-wheel service demands.
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 2001 GMC Trucks Sierra 3500 Tires for Sale
Available 2001 GMC Trucks Sierra 3500 tire choices center on BFGoodrich All-Terrain T/A KO2 radials in both 245/75R16 and 225/75R16. The main comparison points are the correct truck configuration, raised white letter sidewall styling, LT-duty load capacity, and rim-width compatibility for each size.
Owners of a 2001 GMC Trucks Sierra 3500 usually need to sort out single-rear-wheel versus dual-rear-wheel fitment first. The questions below focus on tire size, 16-inch rim fitment, LT radial selection, appearance, and the checks worth making before road use.
Tire Size & Fitment
What tire size fits a 2001 GMC Trucks Sierra 3500?
The 2001 GMC Trucks Sierra 3500 uses either 245/75R16 or 225/75R16 radial tires, depending on configuration. Single-rear-wheel SL, SLE, and SLT models use 245/75R16, while dual-rear-wheel front and rear positions use 225/75R16.
That means the right answer starts with identifying whether the truck is a standard rear-wheel setup or a dually. Trim name alone is not enough if the truck has been changed over the years, so checking the actual wheel arrangement and the current 16-inch wheels is the safest way to avoid ordering the wrong size.
What size rim does a 2001 GMC Trucks Sierra 3500 use?
Both primary tire sizes for the 2001 GMC Trucks Sierra 3500 are built for 16-inch rims. The truck uses 245/75R16 or 225/75R16 radial tires, and in both cases the final 16 in the size marks the wheel diameter.
Wheel diameter is only part of the fitment picture on a heavy-duty truck like this. Rim width also matters, especially since the available 245/75R16 and 225/75R16 products do not share the same width range, so it is worth confirming both the wheel diameter and the actual wheel width before replacement.
Why does the 2001 GMC Trucks Sierra 3500 have more than one tire size?
The 2001 GMC Trucks Sierra 3500 has more than one tire size because its fitment changes with the truck's wheel configuration. Single-rear-wheel SL, SLE, and SLT models use 245/75R16, while dual-rear-wheel versions use 225/75R16 at the front and rear.
This is a practical heavy-duty truck distinction rather than a cosmetic one. A dually uses a different wheel arrangement than a standard rear-wheel truck, so the tire choice needs to follow that hardware, not just the model year or trim badge. Verifying the actual setup on the truck is especially important if wheels have ever been replaced.
Choosing the Right Tire
What should I consider when choosing a 245/75R16 or 225/75R16 tire for a 2001 GMC Trucks Sierra 3500?
Start with the correct size for the truck's configuration, since the 2001 GMC Trucks Sierra 3500 uses 245/75R16 in single-rear-wheel form and 225/75R16 in dual-rear-wheel form. Both available choices are LT-style radial truck tires built for 16-inch rims.
After size, compare the details that affect real-world use: rim-width compatibility, load capacity, sidewall style, and the kind of driving the truck sees. A Sierra 3500 used for towing, hauling, or regular work should be matched carefully to the wheel and load demands already on the truck rather than chosen by size notation alone.
What sidewall styles are available for 2001 GMC Trucks Sierra 3500 tires?
The available tires for the 2001 GMC Trucks Sierra 3500 use an RWL sidewall, which means raised white letters. That styling appears on the BFGoodrich All-Terrain T/A KO2 offered in both 245/75R16 and 225/75R16.
Sidewall treatment affects appearance more than fitment, but it can still matter on a truck that balances work use with period-appropriate presentation. An owner who wants the visible white-letter look can stay within the correct size and configuration, while still paying attention to the more important technical points like rim width and load rating.
What brands offer tires for the 2001 GMC Trucks Sierra 3500?
BFGoodrich is the available brand for the 2001 GMC Trucks Sierra 3500 in these fitments. Both the 245/75R16 and 225/75R16 sizes are offered in the BFGoodrich All-Terrain T/A KO2 series.
That keeps the brand decision simple and shifts the focus to choosing the correct size for the truck's actual configuration. From there, the useful comparisons are load capacity, rim-width range, sidewall presentation, and whether the truck is a single-rear-wheel model or a dually that needs the narrower 225/75R16 fitment.
Restoration & Appearance
Which tire should I choose for a period-style 2001 GMC Trucks Sierra 3500?
A period-style choice for a 2001 GMC Trucks Sierra 3500 still starts with the truck's correct modern radial fitment. That means 245/75R16 for single-rear-wheel SL, SLE, and SLT models, or 225/75R16 for dual-rear-wheel front and rear positions.
Because this is a 2001 heavy-duty pickup, appearance usually comes from choosing the right overall tire character rather than chasing antique construction. A raised white letter all-terrain radial can suit the truck's era well, but the most important step is preserving the proper size and wheel configuration before focusing on cosmetic presentation.
How does tire construction affect the appearance of a restored 2001 GMC Trucks Sierra 3500?
Tire construction is straightforward on the 2001 GMC Trucks Sierra 3500 because its primary fitments are radial tires, not bias-ply. That means the visual difference comes more from tread style and sidewall treatment than from choosing between vintage and modern construction types.
On a restoration-minded truck from this era, a radial all-terrain with raised white letters gives a noticeably different presentation than a plainer highway-style sidewall would. Even so, getting the correct 245/75R16 or 225/75R16 fitment for the truck's actual setup matters more than appearance alone when trying to keep the truck looking and sitting right.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2001 GMC Trucks Sierra 3500?
Yes, modifications can affect tire fitment on a 2001 GMC Trucks Sierra 3500 even when the original size is known. Aftermarket wheels, suspension changes, altered ride height, or a conversion between single-rear-wheel and dual-rear-wheel hardware can all change what the truck will accept safely.
That is why size alone should not be the only checkpoint on an older working truck. Measuring the current wheel diameter and width, checking spacing and clearance, and confirming that the truck still uses its intended rear-wheel arrangement can prevent a mismatch that looks correct on paper but creates problems once installed.
What should I inspect before driving a 2001 GMC Trucks Sierra 3500 on new tires?
Before driving a 2001 GMC Trucks Sierra 3500 on new tires, inspect the wheels, valve stems, lug hardware, and overall tire pressure, then confirm the tire size matches the truck's actual configuration. It is also worth checking for suspension wear, steering looseness, and any obvious clearance issues.
A heavy-duty pickup places more demand on tires than a lightly used passenger vehicle, so the rest of the setup needs to be ready as well. Looking for rubbing marks, uneven old-tire wear, side-to-side wheel differences, and signs of previous modifications can help catch fitment problems before the truck is loaded or driven at highway speed.
How should 245/75R16 and 225/75R16 tires on a collector or work-used 2001 GMC Trucks Sierra 3500 be maintained?
Tires on a 2001 GMC Trucks Sierra 3500 should be maintained with regular pressure checks, visual inspections, and close attention to tread wear and sidewall condition. Even a truck that is used infrequently can develop age-related cracking, flat spotting, or air loss if it spends long periods parked.
Consistent maintenance matters even more on a 3500 because load demand can change quickly when the truck goes back to hauling or towing. Keeping the tires inflated properly for their service, watching for cuts or bulges, and storing the truck away from prolonged sun and ozone exposure all help preserve both safety and tire life.
