The 2000 GMC Trucks K3500 Sierra SLT sits in the heavy-duty end of the GMT400 era, a truck built for real work and offered in single-rear-wheel and dual-rear-wheel configurations that change the tire decision in an important way. That matters here, because this exact model uses either 245/75R16 or 225/75R16 radial tires depending on the sub-model setup, with all fitments staying on a 16-inch rim. Current choices center less on vintage construction and more on matching the correct truck configuration, load-carrying needs, and sidewall presentation. Getting the right size starts with confirming whether the truck is a Base model or one of the DRW front and rear applications.
Which Tire Size Is Right for The 2000 GMC Trucks K3500 Sierra SLT
The 2000 GMC Trucks K3500 Sierra SLT uses two primary tire sizes, and the difference comes down to the exact sub-model rather than a change in construction or rim diameter. Both fitments are radial tires for 16-inch wheels, so the first step is confirming whether the truck is the Base model with 245/75R16 or a dual-rear-wheel front or rear application with 225/75R16.
245/75R16 is a metric radial size where 245 indicates section width in millimeters, 75 is the aspect ratio, R marks radial construction, and 16 is the wheel diameter in inches. On this GMC K3500 Sierra SLT, it is the primary fitment for the Base sub-model and reflects a heavy-duty truck tire format rather than an older bias-ply sizing system. Available choices in this size include a BFGoodrich All Terrain TA KO2 with raised white letters. It is the size to evaluate when the truck is not set up as a dual-rear-wheel front or rear application.
225/75R16 is also a metric radial size, with a 225-millimeter section width, a 75-series profile, radial construction, and a 16-inch rim diameter. For this 2000 GMC Trucks K3500 Sierra SLT, that size is used on the Crew Cab, Extended Cab, and Regular Cab dual-rear-wheel front and rear applications. The available product choice shown here is a BFGoodrich All Terrain TA KO2 with raised white letter sidewall styling. This is the size to focus on when the truck carries a DRW setup and wheel position matters to the tire decision.
Sub-model fitment matters on the 2000 GMC Trucks K3500 Sierra SLT because tire size changes with the truck's wheel configuration. The Base model uses one size, while the dual-rear-wheel Crew Cab, Extended Cab, and Regular Cab front and rear positions use another, so identifying the exact setup comes before choosing a tire.
1
2000 GMC Trucks K3500 Sierra SLT Base
The Base version uses the wider 245/75R16 radial fitment on a 16-inch wheel. Tire selection here centers on choosing the right heavy-duty radial within that size and confirming that the truck still has the intended wheel setup.
2000 GMC Trucks K3500 Sierra SLT Crew Cab (DRW) Front
The Crew Cab dual-rear-wheel front position uses 225/75R16 radial tires. That makes front axle fitment more straightforward, but the buyer should still confirm wheel position and any wheel changes before selecting a replacement.
2000 GMC Trucks K3500 Sierra SLT Crew Cab (DRW) Rear
The Crew Cab dual-rear-wheel rear position also uses 225/75R16 radial tires. Rear dual applications call for extra attention to wheel compatibility and spacing, especially if the truck has had aftermarket wheel or suspension changes.
2000 GMC Trucks K3500 Sierra SLT Ext. Cab (DRW) Front
The Extended Cab dual-rear-wheel front setup uses 225/75R16 radials on 16-inch rims. Selection comes down to using the correct size for the DRW front position and checking that the current wheels match the truck's intended configuration.
2000 GMC Trucks K3500 Sierra SLT Ext. Cab (DRW) Rear
The Extended Cab dual-rear-wheel rear setup uses 225/75R16 radial tires as well. For a rear dual application, the practical step is confirming the wheel arrangement and making sure the tire choice suits the truck's actual rear setup.
2000 GMC Trucks K3500 Sierra SLT Reg. Cab (DRW) Front
The Regular Cab dual-rear-wheel front position uses 225/75R16 radial tires. Choosing a replacement starts with staying in that size and confirming that the truck remains on its correct 16-inch DRW wheel package.
2000 GMC Trucks K3500 Sierra SLT Reg. Cab (DRW) Rear
The Regular Cab dual-rear-wheel rear position uses 225/75R16 radial tires. Rear dual fitment makes it especially important to verify wheel condition, spacing, and clearance before putting the truck back into regular road use.
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 2000 GMC Trucks K3500 Sierra SLT Tires for Sale
Available tires for the 2000 GMC Trucks K3500 Sierra SLT center on BFGoodrich All Terrain TA KO2 radials in both 245/75R16 and 225/75R16. The visible comparison points are size-specific load capacity, rim-width range, weight, and raised white letter sidewall presentation.
These FAQs focus on the exact tire sizes used on the 2000 GMC Trucks K3500 Sierra SLT, how fitment changes between Base and DRW sub-models, and what to check before choosing replacement truck tires for road use.
Tire Size & Fitment
What tire size fits a 2000 GMC Trucks K3500 Sierra SLT?
The 2000 GMC Trucks K3500 Sierra SLT uses two tire sizes: 245/75R16 and 225/75R16. The Base model uses 245/75R16, while the Crew Cab, Extended Cab, and Regular Cab dual-rear-wheel front and rear applications use 225/75R16.
The key is matching the tire size to the truck's exact configuration instead of assuming every K3500 Sierra SLT uses the same tire. Start by confirming whether the truck is a single-rear-wheel Base model or a dual-rear-wheel setup, then verify the current wheel package before selecting a replacement.
What size rim does a 2000 GMC Trucks K3500 Sierra SLT use?
Both primary tire sizes for the 2000 GMC Trucks K3500 Sierra SLT use a 16-inch rim diameter. That applies to the 245/75R16 Base fitment and the 225/75R16 dual-rear-wheel front and rear fitments.
Rim diameter is only one part of the fitment picture on a heavy-duty truck like this. Wheel width also matters, and the available tires in these sizes are built around different rim-width ranges, so checking the actual wheel on the truck is still important before mounting new tires.
Why does the 2000 GMC Trucks K3500 Sierra SLT have more than one tire size?
The 2000 GMC Trucks K3500 Sierra SLT has more than one tire size because the fitment changes with the sub-model and wheel configuration. The Base model uses 245/75R16, while the dual-rear-wheel Crew Cab, Extended Cab, and Regular Cab front and rear positions use 225/75R16.
That means the first buying decision is not brand or tread style but identifying the truck's exact setup. A K3500 that has been modified, converted, or fitted with different wheels can differ from its original configuration, so checking the current wheel and tire arrangement helps prevent ordering the wrong size.
Choosing the Right Tire
What should I consider when choosing a 245/75R16 tire for a 2000 GMC Trucks K3500 Sierra SLT?
For a 2000 GMC Trucks K3500 Sierra SLT that uses 245/75R16, start with the correct sub-model and confirm the truck is the Base configuration. The available option in this size is a radial BFGoodrich All Terrain TA KO2 with raised white letter sidewalls, a 6.5 to 8.0 inch rim-width range, and a maximum load capacity of 3,042 lbs @ 80 psi.
That combination makes wheel compatibility and intended truck use the real selection points. Compare the actual wheel width on the truck, make sure the tire suits the load demands of the vehicle, and inspect for any wheel or suspension changes that could affect how a replacement tire sits and clears.
What brands offer tires for the 2000 GMC Trucks K3500 Sierra SLT?
The available products shown for the 2000 GMC Trucks K3500 Sierra SLT come from BFGoodrich. Both the 245/75R16 and 225/75R16 fitments are represented by the BFGoodrich All Terrain TA KO2 radial tire series.
Since the visible selection is centered on one brand and one tire series, the buying comparison shifts to the correct size for the truck's configuration, load capacity, rim-width compatibility, and whether the raised white letter appearance suits the look you want. Getting the fitment right matters more than comparing brand names here.
What sidewall styles are available for 2000 GMC Trucks K3500 Sierra SLT tires?
The available tires shown for the 2000 GMC Trucks K3500 Sierra SLT use an RWL sidewall, meaning raised white letters. That sidewall treatment appears on both the 245/75R16 and 225/75R16 BFGoodrich All Terrain TA KO2 options.
Sidewall style affects appearance more than fitment, but it still matters on a truck that may serve both working and enthusiast roles. If a more original-looking or more understated presentation is important, confirm the sidewall treatment before choosing, especially since the current selection does not present a broad range of alternate sidewall styles.
Restoration & Appearance
Which tire should I choose for a period-style 2000 GMC Trucks K3500 Sierra SLT?
A period-style choice for the 2000 GMC Trucks K3500 Sierra SLT starts with using the correct size for the exact configuration: 245/75R16 for the Base model or 225/75R16 for the dual-rear-wheel applications. Both primary fitments are radial tires on 16-inch rims, so the look comes more from the tire's tread and sidewall presentation than from a bias-ply versus radial decision.
The available BFGoodrich All Terrain TA KO2 options give the truck a more rugged, all-terrain presentation with raised white letters. Anyone trying to match a very specific showroom-era appearance should verify historical references for the truck's original delivery configuration rather than assuming any current tire style reflects it exactly.
How does tire construction affect the appearance of a restored 2000 GMC Trucks K3500 Sierra SLT?
Tire construction is straightforward on the 2000 GMC Trucks K3500 Sierra SLT because the primary fitments are radial, not bias-ply. That means appearance differences are less about switching construction types and more about choosing the right size, tread style, and sidewall treatment for the truck's intended presentation.
On this model, an all-terrain radial with raised white letters gives a distinctly truck-oriented look that may suit some restorations better than others. A restoration-minded owner should focus first on correct size and wheel setup, then decide whether the visible tread and sidewall style match the character of the finished truck.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2000 GMC Trucks K3500 Sierra SLT?
Yes, modifications can affect tire fitment on a 2000 GMC Trucks K3500 Sierra SLT even when the original tire size is known. Aftermarket wheels, suspension changes, altered ride height, or a conversion between single-rear-wheel and dual-rear-wheel setups can all change what the truck currently requires.
That is why the current wheel and tire arrangement should be inspected before choosing a replacement. Confirm the wheel diameter, check the wheel width, look at front and rear positioning on DRW trucks, and make sure there is adequate clearance at the fender, suspension, and steering components.
What should I inspect before driving a 2000 GMC Trucks K3500 Sierra SLT on new tires?
Before driving a 2000 GMC Trucks K3500 Sierra SLT on new tires, inspect the wheels for damage, confirm the size matches the truck's exact configuration, and make sure the tires are inflated appropriately for the application. It is also wise to look over valve stems, lug hardware, tread seating, and general clearance around suspension and body components.
A heavy-duty truck deserves an extra check after installation and again after the first stretch of driving. Watch for air loss, uneven contact, vibration, or signs of rubbing, especially on dual-rear-wheel models where wheel position and spacing can influence how the tires behave under load.
How often should tires on a 2000 GMC Trucks K3500 Sierra SLT be inspected?
Tires on a 2000 GMC Trucks K3500 Sierra SLT should be inspected regularly, not just when tread looks worn. A practical routine is to check them before longer drives, after periods of storage, and whenever the truck begins to show vibration, pull, uneven wear, or pressure loss.
Collector-owned and lightly used trucks can age their tires long before they wear them out, so sidewall cracking, cuts, bulges, and changes in pressure deserve close attention. On a work-capable K3500, routine inspection also helps catch wheel or suspension issues that can shorten tire life or affect safe road behavior.
