The 2024 GMC Trucks Sierra 3500 HD sits at the heavy-duty end of GMC’s pickup lineup, built for serious payload, towing, and work-truck durability while still covering trims that range from straightforward commercial use to upscale Denali models. Tire fitment on this truck is not a one-size decision, because the Sierra 3500 HD uses four different primary radial sizes: 275/65R20, 235/80R18, 275/70R18, and 235/80R17. That makes trim level, dual-rear-wheel configuration, and wheel diameter central to choosing the right tire. Available choices here also reflect different sidewall presentations and rim-width ranges, so appearance and intended use both deserve a close look before replacement.
Which Tire Size Is Right for The 2024 GMC Trucks Sierra 3500 HD
The 2024 GMC Trucks Sierra 3500 HD uses four primary tire sizes, and the right one depends on the exact sub-model and wheel setup. Some trims share the same size, while others differ by single-rear-wheel versus dual-rear-wheel configuration and by 17-inch, 18-inch, or 20-inch rims. Before choosing a tire, confirm the exact trim and whether the truck is DRW, then verify actual wheel diameter on the truck if anything has been changed from stock.
Fit(s): AT4, Denali, Denali Ultimate, SLE, and SLT
Construction: Radial|Rim: 20 in
A 275/65R20 tire is a metric radial size with a 275-millimeter nominal section width, a 65-series aspect ratio, and fitment for a 20-inch rim. On the 2024 GMC Trucks Sierra 3500 HD, this is one of the primary radial fitments used on several upper trims, making wheel diameter confirmation especially important before replacement. In this size, the available tire choice centers on the BFGoodrich All-Terrain T/A KO2 with an RBL sidewall. This size is worth evaluating when the truck is equipped with 20-inch wheels and the goal is to keep the correct fitment profile for those configurations.
Fit(s): Denali (DRW), Denali Ultimate (DRW), Pro (Regular Cab)(2WD)(DRW), and SLT (DRW)
Construction: Radial|Rim: 18 in
A 235/80R18 tire uses a 235-millimeter nominal section width, an 80-series profile, and radial construction for an 18-inch rim. Within the 2024 GMC Trucks Sierra 3500 HD range, this size appears on certain dual-rear-wheel configurations, so it should not be assumed to apply across all trims that wear 18-inch wheels. The tall-profile metric format points to a different fitment role than the wider 275-series options used elsewhere in the lineup. This size should be chosen only after confirming the exact DRW sub-model and making sure the truck is actually on the matching 18-inch wheel setup.
A 275/70R18 tire is a metric radial size that combines a 275-millimeter nominal section width with a 70-series profile on an 18-inch rim. For the 2024 GMC Trucks Sierra 3500 HD, this size is used on selected single-rear-wheel trims and differs from both the 20-inch 275/65R20 setup and the narrower DRW fitments. The available product in this size is the BFGoodrich All-Terrain T/A KO2 with an RWL sidewall, giving it a distinct visual character compared with the RBL versions in other sizes. It makes sense to focus on this size when the truck has 18-inch SRW wheels and the trim calls for the wider 275-section tire.
Fit(s): Pro (DRW), Pro (Regular Cab)(2WD)(DRW), SLE (DRW), and SLT (DRW)
Construction: Radial|Rim: 17 in
A 235/80R17 tire is a metric radial with a 235-millimeter nominal section width, an 80-series aspect ratio, and fitment for a 17-inch rim. On the 2024 GMC Trucks Sierra 3500 HD, this size is associated with certain dual-rear-wheel work-oriented configurations, which makes wheel and rear-axle setup more important than trim name alone. The available product choice here is the BFGoodrich All-Terrain T/A KO2 with an RBL sidewall. This is the size to examine when the truck uses 17-inch DRW wheels and the goal is to stay aligned with that narrower heavy-duty fitment pattern.
Tire fitment for the 2024 GMC Trucks Sierra 3500 HD varies meaningfully by trim and by single-rear-wheel or dual-rear-wheel configuration. Checking the exact sub-model matters here, because some versions share a size while others split across different rim diameters and tire widths.
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2024 GMC Trucks Sierra 3500 HD AT4
The AT4 uses a single primary tire size, making fitment more straightforward than on trims that span multiple wheel packages. Tire selection then becomes a matter of staying with the correct 20-inch radial fitment and comparing the available product’s specifications and sidewall presentation.
The Denali uses one primary tire size in standard single-rear-wheel form, while the Denali (DRW) moves to a different heavy-duty fitment. That makes it important to confirm whether the truck is SRW or DRW before selecting a replacement tire.
The Denali (DRW) uses a dedicated dual-rear-wheel tire size rather than the wider 20-inch fitment used on the standard Denali. Tire choice should begin with confirming the DRW wheel setup and matching the correct rim diameter before comparing products.
The Denali Ultimate follows a single-size tire fitment pattern, which simplifies replacement as long as the truck remains on its original wheel diameter. The key decision is keeping the correct radial size and reviewing the available tire’s specifications for intended road and truck use.
2024 GMC Trucks Sierra 3500 HD Denali Ultimate (DRW)
The Denali Ultimate (DRW) uses a different tire size from the single-rear-wheel Denali Ultimate, reflecting its dual-rear-wheel configuration. Tire selection should focus first on DRW status and wheel diameter, then on choosing a product suited to that fitment.
The Pro uses one primary tire size in its standard configuration, but the Pro (DRW) and Pro (Regular Cab)(2WD)(DRW) can differ from it. That means the trim badge alone is not enough; the exact body and rear-wheel setup should be confirmed before replacement.
The Pro (DRW) uses a dedicated dual-rear-wheel fitment that differs from the standard Pro. Tire replacement should stay focused on the correct DRW size and 17-inch wheel setup unless the truck has been changed to another approved configuration.
2024 GMC Trucks Sierra 3500 HD Pro (Regular Cab)(2WD)(DRW)
This Pro Regular Cab 2WD DRW configuration is one of the few Sierra 3500 HD variants here associated with two possible tire sizes. Wheel diameter becomes the first thing to verify, because either a 17-inch or 18-inch setup may be involved.
The SLE is tied to two primary tire sizes, so the correct choice depends on which wheel package the truck carries. Replacement starts with confirming whether the truck has the 18-inch or 20-inch setup rather than assuming all SLE models share the same fitment.
The SLE (DRW) uses a single dual-rear-wheel tire size, separate from the SLE’s single-rear-wheel fitments. Tire selection is more straightforward once DRW status and the 17-inch wheel diameter are confirmed on the truck.
The SLT can use two primary tire sizes, so trim name alone does not finish the fitment question. Wheel diameter should be checked first, followed by a review of the available tire’s sidewall style and rim-width compatibility for that size.
The SLT (DRW) spans two possible tire sizes, both tied to dual-rear-wheel use but on different wheel diameters. Choosing correctly means confirming the actual 17-inch or 18-inch setup on the truck before moving on to product comparison.
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 2024 GMC Trucks Sierra 3500 HD Tires for Sale
Available Sierra 3500 HD tire choices center on BFGoodrich All-Terrain T/A KO2 applications in 275/65R20, 275/70R18, and 235/80R17. The main comparison points are size-specific rim-width range, load capacity, and sidewall presentation, with RBL and RWL treatments both appearing across the lineup.
For the 2024 GMC Trucks Sierra 3500 HD, the biggest questions usually involve exact tire size by trim, wheel diameter, DRW versus SRW fitment, and how to compare the available radial tire choices before the truck goes back into service.
Tire Size & Fitment
What tire size fits a 2024 GMC Trucks Sierra 3500 HD?
The 2024 GMC Trucks Sierra 3500 HD uses four primary tire sizes: 275/65R20, 235/80R18, 275/70R18, and 235/80R17. All of them are radial sizes, and the correct one depends on the exact trim and whether the truck is single-rear-wheel or dual-rear-wheel.
The practical step is to match the tire to the exact sub-model and wheel diameter already on the truck. An SLE or SLT may use more than one size, and DRW versions differ from standard models, so checking the door-jamb information and the wheel itself helps avoid choosing the wrong fitment.
What size rim does a 2024 GMC Trucks Sierra 3500 HD use?
The 2024 GMC Trucks Sierra 3500 HD uses 17-inch, 18-inch, and 20-inch rims depending on configuration. The 235/80R17 size fits a 17-inch rim, both 235/80R18 and 275/70R18 fit 18-inch rims, and 275/65R20 fits a 20-inch rim.
Rim diameter is the first thing to confirm before ordering replacement tires, especially on trims that can carry more than one factory size. If the truck has aftermarket wheels or has been changed from one package to another, the actual wheel on the truck matters more than trim assumptions.
Why does the 2024 GMC Trucks Sierra 3500 HD have more than one tire size?
The Sierra 3500 HD covers a wide range of work and premium trims, and its tire fitment changes with wheel package and rear-wheel configuration. That is why this truck appears with four sizes, including wider 275-section tires for some single-rear-wheel models and narrower 235-section tires for certain DRW versions.
Those differences mean tire selection is tied to the truck’s exact role and hardware, not just its model name. A Denali, Pro, SLE, or SLT can follow different fitment paths, so confirming trim, DRW status, and wheel diameter is the safest way to narrow the choice before comparing actual tires.
Choosing the Right Tire
What should I consider when choosing a 2024 GMC Trucks Sierra 3500 HD tire?
Start with the correct tire size for the exact Sierra 3500 HD sub-model, then confirm radial construction and matching rim diameter. From there, useful comparison points include rim-width range, load capacity at the stated pressure, sidewall style, and whether the truck is being used more as a work vehicle or as a daily-driven heavy-duty pickup.
A tire that matches the truck’s intended use on paper still needs to suit the actual wheel setup on the vehicle. Looking at the current tire placard, checking for wheel changes, and verifying SRW versus DRW configuration will narrow the choices quickly and keep the comparison focused on tires that belong on that specific setup.
What sidewall styles are available for 2024 GMC Trucks Sierra 3500 HD tires?
Sidewall style varies by size among the available Sierra 3500 HD products. RBL sidewalls appear in 275/65R20 and 235/80R17, while the 275/70R18 BFGoodrich All-Terrain T/A KO2 uses an RWL sidewall, giving that fitment a different visual presentation.
That matters if appearance is part of the decision, especially on a truck that mixes work duty with personal use. Sidewall style should still come after fitment, though, because the first requirement is the correct size and wheel diameter; the visual treatment is a secondary choice once the proper tire category is confirmed.
What brands offer tires for the 2024 GMC Trucks Sierra 3500 HD?
The available Sierra 3500 HD products here are from BFGoodrich, specifically within the All-Terrain T/A KO2 line for the covered sizes. That means the brand choice is narrow, and the more useful comparison shifts toward selecting the correct size and reviewing the specification differences tied to each fitment.
With a limited brand spread, buyers should pay closer attention to how each size aligns with the truck’s exact configuration. Rim-width range, load figure, sidewall treatment, and whether the truck is DRW or SRW will have more influence on the right match than brand comparison alone.
Restoration & Appearance
Does correct tire fitment matter for a 2024 GMC Trucks Sierra 3500 HD restoration or appearance build?
Correct tire fitment still matters, even on a modern heavy-duty truck like the 2024 GMC Trucks Sierra 3500 HD. The truck uses several different tire sizes across its trims, so choosing the wrong one can change the stance, sidewall shape, and overall visual balance in ways that do not match the intended configuration.
Appearance builds benefit from getting the wheel diameter and tire proportions right before focusing on details like sidewall treatment. An RBL or RWL look can influence the presentation, but the right visual result starts with the proper size for the truck’s actual trim, DRW status, and wheel setup.
How does tire choice affect the appearance of a 2024 GMC Trucks Sierra 3500 HD?
Tire choice affects both the visual stance and the personality of a 2024 GMC Trucks Sierra 3500 HD. A 20-inch 275/65R20 setup presents differently from an 18-inch 275/70R18 or a narrower 235/80-series DRW fitment, and sidewall treatment adds another visible difference.
That makes it worth deciding whether the truck should keep a premium street-oriented presentation, a more rugged all-terrain look, or a work-truck appearance that stays closer to its original configuration. The smartest approach is to match the correct size first, then use sidewall style as the finishing detail.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2024 GMC Trucks Sierra 3500 HD?
Yes, modifications can affect tire fitment on a 2024 GMC Trucks Sierra 3500 HD. Aftermarket wheels, suspension height changes, altered offsets, or swaps between 17-inch, 18-inch, and 20-inch wheel packages can all change which tire size works correctly on the truck.
That is especially important on a model with multiple factory fitments and both SRW and DRW applications. Even when a tire matches one Sierra 3500 HD configuration, the truck should still be checked for wheel width, clearance at steering lock, and any changes that move it away from its original setup.
What should I inspect before driving a 2024 GMC Trucks Sierra 3500 HD on new tires?
Before putting a 2024 GMC Trucks Sierra 3500 HD into regular service on new tires, inspect inflation pressure, valve stems, wheel condition, lug torque, and basic tread and sidewall condition after installation. It also helps to confirm that all tires match the intended size for that trim and wheel package.
A short recheck after the first miles is worthwhile on a heavy-duty truck. Looking for any rubbing, uneven air loss, vibration, or unusual wear can catch a fitment or setup issue early, particularly if the truck has had wheel changes, suspension work, or previous use in demanding towing or hauling conditions.
How often should tires on a 2024 GMC Trucks Sierra 3500 HD be inspected?
Tires on a 2024 GMC Trucks Sierra 3500 HD should be inspected regularly, not just when tread looks low. A heavy-duty pickup benefits from routine checks for pressure loss, cuts, bulges, uneven wear, and cracking, especially if it tows, hauls, or spends long periods parked between harder uses.
Inspection matters even more when the truck uses different fitments across trims and wheel packages. Catching an issue early helps preserve load-carrying confidence and can also reveal whether alignment, wheel damage, or an incorrect replacement size is affecting the way the tires are wearing in real service.
