The 2007 GMC Trucks Sierra 2500 HD sits in the era when heavy-duty pickups had to balance serious work capability with everyday comfort, making tire fitment an important part of how the truck looks, carries load, and handles the road. For this exact model, the primary tire choices are radial sizes 245/75R16 and 265/70R17, so the first step is confirming which wheel diameter and sub-model configuration your truck uses. Available choices stay focused and practical, with BFGoodrich All-Terrain T/A KO2 options and raised white letter styling. That makes the decision less about chasing novelty and more about matching the truck's wheel setup, load needs, and intended use.
Which Tire Size Is Right for The 2007 GMC Trucks Sierra 2500 HD
The 2007 GMC Trucks Sierra 2500 HD uses two primary tire sizes, and the difference is tied to sub-model configuration and wheel diameter. Both fitments are radial, but one uses a 16-inch rim and the other uses a 17-inch rim, so identifying the exact sub-model and confirming the truck's current wheels should come before comparing tire choices.
245/75R16 is a metric radial size in which 245 identifies the section width in millimeters, 75 is the aspect ratio, R designates radial construction, and 16 is the rim diameter in inches. On the 2007 GMC Trucks Sierra 2500 HD, this size is one of the primary heavy-duty fitments and is used across many SLE and WT configurations. Available choices in this size center on the BFGoodrich All-Terrain T/A KO2 with raised white letter sidewalls. It is the size to evaluate when your truck is built around a 16-inch wheel and you want to stay with the established fitment.
265/70R17 is also a metric radial size, with 265 showing section width in millimeters, 70 indicating the aspect ratio, R marking radial construction, and 17 identifying the wheel diameter. For the 2007 GMC Trucks Sierra 2500 HD, this size applies to selected SLE and SLT configurations and depends on the truck being fitted with 17-inch wheels. BFGoodrich All-Terrain T/A KO2 options are available here as well, including versions with different load capacities and raised white letter styling. This size deserves a closer look when wheel diameter, trim configuration, and load requirements point toward the 17-inch setup.
Sub-model fitment on the 2007 GMC Trucks Sierra 2500 HD is not completely uniform, because some configurations use only one tire size while others are associated with both 245/75R16 and 265/70R17. Checking the exact cab and trim combination matters, and wheel diameter should be confirmed as well before choosing a replacement tire.
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2007 GMC Trucks Sierra 2500 HD SLE Crew Cab
The SLE Crew Cab is associated with both primary Sierra 2500 HD tire sizes, so this configuration calls for extra attention before ordering tires. The key step is confirming whether the truck is running the 16-inch or 17-inch wheel setup, then comparing the available radial options within that size.
The SLE Ext. Cab is also tied to both 245/75R16 and 265/70R17 radial fitments. That means tire selection starts with the actual wheel diameter on the truck, followed by choosing the right all-terrain product and load specification for how the pickup is used.
The SLE Reg. Cab 4x2 uses the 245/75R16 radial size, making fitment more straightforward than the multi-size configurations. Once the 16-inch wheel setup is confirmed, the decision becomes choosing the right tire within that size for load handling, appearance, and intended road or trail use.
The SLE Reg. Cab 4x4 is matched with the 245/75R16 radial fitment. With the size already narrowed down, the practical next step is checking wheel condition and rim compatibility, then selecting the tire that suits the truck's working role and overall setup.
The SLE with Z71 package can use either of the two primary radial sizes associated with this Sierra 2500 HD. Because both 16-inch and 17-inch fitments are in play, wheel diameter should be verified first, especially if the truck has seen wheel changes over time.
The SLT Crew Cab appears with both 245/75R16 and 265/70R17 tire fitments, so size selection depends on the truck's actual wheel configuration. That makes this a good sub-model to inspect carefully for current wheel diameter before comparing load ratings and tire specifications.
The SLT Ext. Cab uses the 265/70R17 radial size. Tire shopping is therefore centered on the 17-inch fitment, with attention to the available BFGoodrich KO2 load versions and to whether the truck's current wheel and suspension setup remains true to that size.
The SLT with Z71 package is associated with both 245/75R16 and 265/70R17. Because two wheel diameters are possible here, the safest approach is to verify the wheels already on the truck and then compare radial options that match its load demands and intended use.
The WT Crew Cab uses the 245/75R16 radial fitment. That keeps tire selection fairly direct, and the main decision becomes choosing a replacement that matches the truck's 16-inch wheel setup and the kind of work or mixed-use driving it still sees.
The WT Ext. Cab is fitted with 245/75R16 radial tires. With the primary size established, attention can shift to wheel condition, load needs, and whether the truck is being maintained for regular work, winter duty, or occasional-use service.
The WT Reg. Cab 4x2 uses the 245/75R16 radial size. That makes replacement choices simpler, though it is still worth confirming the existing 16-inch wheels and overall truck setup before selecting a heavy-duty all-terrain tire.
The WT Reg. Cab 4x4 also uses the 245/75R16 radial fitment. For this configuration, the focus is less about which size fits and more about choosing a tire that matches the wheel specification and the truck's actual carrying or off-pavement 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 2007 GMC Trucks Sierra 2500 HD Tires for Sale
Available 2007 GMC Trucks Sierra 2500 HD tire choices are focused on practical all-terrain radial fitment, with BFGoodrich All-Terrain T/A KO2 options in both 245/75R16 and 265/70R17. The visible differences center on wheel diameter, load specification, raised white letter styling, and rim-width compatibility.
Owners of a 2007 GMC Trucks Sierra 2500 HD usually need to sort out exact tire size by sub-model and wheel diameter first, then compare radial tire choices, load capacity, and real-world fitment checks. These FAQs focus on those decisions.
Tire Size & Fitment
What tire size fits a 2007 GMC Trucks Sierra 2500 HD?
The 2007 GMC Trucks Sierra 2500 HD uses two primary tire sizes: 245/75R16 and 265/70R17. Both are radial fitments, but they do not apply universally across every Sierra 2500 HD configuration, so the correct choice depends on the truck's exact sub-model and wheel setup.
A quick check of the wheel diameter is especially important because this truck was fitted with both 16-inch and 17-inch rim combinations. Once that is confirmed, the size decision becomes much clearer, and you can focus on load capacity, rim-width compatibility, and the intended use of the truck rather than guessing between two primary sizes.
What size rim does a 2007 GMC Trucks Sierra 2500 HD use?
A 2007 GMC Trucks Sierra 2500 HD uses either a 16-inch or 17-inch rim, depending on the tire size and sub-model configuration. The 245/75R16 fitment uses a 16-inch rim, while the 265/70R17 fitment uses a 17-inch rim.
That rim difference matters just as much as the tire size itself. Before replacing tires, confirm the actual wheels on the truck rather than relying only on trim assumptions, especially on an older heavy-duty pickup that may have seen wheel swaps or package changes. Matching the tire to the correct rim diameter is the first fitment step.
Why does the 2007 GMC Trucks Sierra 2500 HD have more than one tire size?
More than one tire size appears on the 2007 GMC Trucks Sierra 2500 HD because fitment varies by cab, trim, package, and wheel setup. Some sub-models are tied to only 245/75R16, some use only 265/70R17, and others are associated with either size depending on how the truck is configured.
That means the correct answer is not based on model name alone. The most useful next step is to identify the exact sub-model and then verify the wheel diameter currently on the truck. Once those two details line up, tire selection becomes a matter of choosing the right load specification and tread style within the correct size.
Choosing the Right Tire
What should I consider when choosing a 245/75R16 tire for a 2007 GMC Trucks Sierra 2500 HD?
For a 2007 GMC Trucks Sierra 2500 HD using 245/75R16, start with the basic fitment points: the truck needs the 16-inch wheel setup, and the tire should match the vehicle's intended working role. In this size, the available option is a BFGoodrich All-Terrain T/A KO2 with radial construction and raised white letter styling.
Selection should then focus on practical details such as rim-width compatibility, load capacity, and how the truck is actually driven. A heavy-duty pickup that tows, hauls, or sees rougher surfaces may call for different priorities than one used mainly for occasional road service, even when the size itself is already correct.
What brands offer tires for the 2007 GMC Trucks Sierra 2500 HD?
The available products for the 2007 GMC Trucks Sierra 2500 HD are from BFGoodrich. The fitments shown for both 245/75R16 and 265/70R17 center on the All-Terrain T/A KO2 series, so brand comparison is limited and the main differences fall within size and load specification.
That shifts the buying decision away from brand shopping and toward application details. Instead of comparing several manufacturers, it makes more sense to confirm the correct tire size first, then look closely at the rim-width range, sidewall presentation, and the load version that best matches how the Sierra 2500 HD is expected to work.
What sidewall styles are available for 2007 GMC Trucks Sierra 2500 HD tires?
The available tires for the 2007 GMC Trucks Sierra 2500 HD use RWL sidewalls, meaning raised white letters. That styling appears on the BFGoodrich All-Terrain T/A KO2 options associated with both 245/75R16 and 265/70R17 fitments.
Sidewall style affects the truck's visual presentation more than basic fitment, but it still matters on a pickup that blends work duty with enthusiast appeal. Raised white letters give the Sierra 2500 HD a more traditional all-terrain look, while the larger fitment questions remain wheel diameter, correct tire size, and the load requirements of the specific truck.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2007 GMC Trucks Sierra 2500 HD?
Yes, modifications can affect tire fitment on a 2007 GMC Trucks Sierra 2500 HD even when the tire size looks correct on paper. Aftermarket wheels, changes in rim width, suspension lifts or lowering, and steering or body alterations can all change how a 245/75R16 or 265/70R17 tire sits on the truck.
A truck that has been changed from its original wheel setup should be checked carefully before replacing tires. Pay attention to wheel diameter, wheel width, clearance at full steering lock, and space around suspension and fender openings. On a heavy-duty pickup, even small fitment differences can matter once the truck is loaded or driven off pavement.
What should I inspect before driving a 2007 GMC Trucks Sierra 2500 HD on new tires?
Before putting a 2007 GMC Trucks Sierra 2500 HD into regular service on new tires, inspect the wheels, valve stems, and lug hardware, and make sure the tires are inflated appropriately for the application. It is also worth checking for any existing alignment or suspension issues that could affect wear from the start.
A short road test can reveal problems that were already present before the tires were changed. Watch for vibration, pulling, uneven steering response, or contact at full turn. Heavy-duty trucks place real demands on tires, so confirming basic mechanical condition early helps the new set wear more evenly and work as intended.
How often should tires on a 2007 GMC Trucks Sierra 2500 HD be inspected?
Tires on a 2007 GMC Trucks Sierra 2500 HD should be inspected regularly, especially if the truck tows, hauls, sits for long periods, or sees rough surfaces. Routine checks should include tread condition, air pressure, cuts, bulges, sidewall damage, and any signs of uneven wear that could point to alignment or suspension issues.
Frequent inspection is particularly important on a heavy-duty truck because load and service conditions can expose problems quickly. It helps to look over the tires before longer trips and anytime the truck's use changes seasonally. Catching air loss, irregular wear, or early damage sooner can prevent a small issue from becoming a roadside problem.
