2015 GMC Trucks Tire Fitment Guide

2015 GMC Trucks vehicles use eighteen sizes across eight models: 255/55R20, 255/65R18, and 255/60R19 for Acadia; 265/70R16, 255/65R17, and 265/60R18 for Canyon; 255/70R17, 265/70R17, 275/55R20, and 265/65R18 for Sierra 1500; 245/75R17, 265/70R18, and 265/60R20 for Sierra 2500 HD; 235/80R17 and 265/70R18 for Sierra 3500 HD; 235/55R18, 235/55R19, and 225/65R17 for Terrain; and 275/55R20, 285/45R22, and 265/65R18 for Yukon and Yukon XL. Rim diameters span 16 through 22 inches, so there is no single GMC-wide size.

That means year and make alone are not enough for a correct tire choice on 2015 GMC Trucks. Start by identifying the exact model, then confirm the wheel diameter already on the vehicle before comparing tread style, load service, or sidewall appearance. Where product coverage is available, rim width ranges include 7.0 to 8.5 inches for 265/70R16, 7.0 to 9.0 for 255/65R17 and 265/70R17, 6.5 to 7.5 for 245/75R17, 6.0 to 7.5 for 235/80R17, and 6.0 to 8.0 for 225/65R17. Shared sizes do exist, but only among certain full-size trucks and SUVs.

On a 2015 GMC Trucks tire, 265/70R17 is a metric radial size. The 265 is the nominal section width in millimeters, 70 is the aspect ratio, the R means radial construction, and 17 is the wheel diameter in inches. Within the 2015 GMC Trucks range, that size fits Sierra 1500. BFGoodrich offers it with an S speed rating, which carries a 112 mph ceiling, and the same nominal size appears in more than one load specification.

That last point matters because reading only the size code does not tell the whole story. A Sierra 1500 owner still needs to compare the service description and load requirement against how the truck is used. The available 265/70R17 options cover 2,470 pounds at 50 psi and 3,195 pounds at 80 psi, both on 7.0- to 9.0-inch rims. If your truck tows, carries cargo, or has a specific wheel package, matching the full sidewall marking is more useful than matching the 265/70R17 size alone.

No. 2015 GMC Trucks models use different tire sizes depending on the vehicle and, in many cases, the wheel package. Acadia, Canyon, Terrain, and the heavy-duty Sierra models each have their own size groupings, while only a few overlaps appear: 275/55R20 and 265/65R18 are shared by Sierra 1500, Yukon, and Yukon XL, and 265/70R18 is shared by Sierra 2500 HD and Sierra 3500 HD.

That makes model identification essential before going any further. A Yukon and Sierra 1500 may share an 18-inch or 20-inch size, but an Acadia or Terrain will not. Even within one model line, GMC often offered multiple wheel diameters, so checking the sidewall on the existing tire or confirming the wheel size directly is the fastest way to avoid a mismatch. Once the model and rim diameter are confirmed, comparing brands, sidewall styles, and load service becomes much more straightforward.

2015 GMC Trucks sizes with current product coverage use two sidewall styles: raised white letters and raised black letters. BFGoodrich offers 265/70R16, 255/65R17, 265/70R17, and 245/75R17 with RWL sidewalls, while 235/80R17 and 225/65R17 use RBL sidewalls. Both are radial truck tires, but the visual effect is different. RWL creates a more aggressive, branded look, while RBL is more subdued and utility-oriented.

For a 2015 GMC Trucks owner, sidewall choice is mainly about appearance and how the vehicle is presented. A Sierra or Canyon used for weekend trail duty may look right with raised white letters, while a heavy-duty work truck or a cleaner OEM-style presentation may lean toward black lettering. The key is to treat sidewall style as a secondary choice after confirming size, wheel diameter, and load needs. A sidewall you prefer still has to match the correct fitment and service description for the model.

BFGoodrich covers the 2015 GMC Trucks sizes that currently have product coverage here. Those include 265/70R16 for Canyon, 255/65R17 for Canyon, 265/70R17 for Sierra 1500, 245/75R17 for Sierra 2500 HD, 235/80R17 for Sierra 3500 HD, and 225/65R17 for Terrain. Each of those is a radial all-terrain tire from the All-Terrain T/A KO2 family, with sidewall style varying by size.

Brand choice still begins with the size your GMC actually uses. A BFGoodrich option in one 17-inch size does not mean the same product line is the right answer for another 17-inch GMC application, because width, aspect ratio, load service, and wheel width range can change. If you are comparing multiple GMC models or shopping for a truck and SUV in the same household, shared sizes such as 275/55R20 and 265/65R18 may narrow the search, but the exact tire still needs to be matched to the proper model and wheel diameter.

The two 265/70R17 BFGoodrich options for 2015 GMC Trucks Sierra 1500 share the same radial construction, RWL sidewall, 17-inch rim diameter, 7.0- to 9.0-inch rim width range, and S speed rating with a 112 mph ceiling. Where they differ is service level: one carries a 112S service description with a maximum load of 2,470 pounds at 50 psi, and the other carries a 121S service description with a maximum load of 3,195 pounds at 80 psi. Weight also changes from 45.7 pounds to 53.5 pounds.

That comparison matters most for how the truck is used. A Sierra 1500 driven lightly may not need the heavier load-capacity version, while a truck that regularly carries cargo or is set up for harder work may benefit from the higher-rated option if the wheel and vehicle requirements support it. Matching the full service description on the sidewall is the safest approach. Size alone tells you the tire fits the rim diameter; it does not guarantee the load level matches your specific Sierra 1500 setup.

Rim width guidance for covered 2015 GMC Trucks sizes varies by tire size. 265/70R16 fits 7.0- to 8.5-inch rims, 255/65R17 and 265/70R17 fit 7.0- to 9.0-inch rims, 245/75R17 fits 6.5- to 7.5-inch rims, 235/80R17 fits 6.0- to 7.5-inch rims, and 225/65R17 fits 6.0- to 8.0-inch rims. Each of those also matches a specific wheel diameter, so both diameter and width have to work together.

For a 2015 GMC Trucks owner, that means an existing 17-inch wheel is only part of the fitment picture. A Sierra 1500 wheel wide enough for one 17-inch size may not be ideal for another 17-inch size with a different approved range. Before choosing a replacement tire, confirm the wheel diameter stamped on the rim and the wheel width if you are changing from the size already on the truck or SUV. That step becomes especially important when moving between light-duty and heavy-duty GMC applications.

The 2015 GMC Trucks sizes with product coverage here are tubeless radials. BFGoodrich 265/70R16, 255/65R17, 265/70R17, 245/75R17, 235/80R17, and 225/65R17 all use tubeless construction. That is typical for modern truck and SUV applications of this era. Tube-type fitment is not part of the available product mix for these covered sizes.

In practice, that means your attention should shift from tube compatibility to wheel condition, valve stem condition, and correct air retention. A tubeless tire still depends on a clean bead seat and a sound rim to seal properly. If your 2015 GMC Trucks vehicle has been sitting, inspect the wheel for corrosion and replace aging valve stems during installation. Owners of trucks that see towing or rough-service use should also recheck pressure after mounting, since a slow leak is easier to catch early than after the vehicle is loaded.

A 2015 GMC Trucks vehicle should be stored on clean, properly inflated tires, away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing equipment. A cool, dry garage is better than a damp or sunlit space. Even though these are radial tires rather than vintage bias-ply constructions, long static periods can still encourage flat-spotting, sidewall stress, and weather checking if the vehicle never moves.

Moving the vehicle periodically helps change the contact patch and reduces strain on one area of the tire. If the truck or SUV will sit for an extended season, some owners use stands to remove part of the load, but the suspension should still be supported correctly. Full-size GMC trucks and SUVs are heavy enough that storage pressure matters, so check inflation before storage and again before the first drive. Do not forget the spare, especially on vehicles used for towing or family travel.

Tires on a 2015 GMC Trucks vehicle should be evaluated by age as much as by tread depth. A common collector and low-mileage rule is to inspect closely once tires reach five to seven years of service and to treat around ten years as a serious replacement point even if the tread still looks usable. The DOT date code on the sidewall gives the tire's build week and year, which is more meaningful than appearance alone.

That approach matters because many trucks and SUVs accumulate little mileage but still age out their tires. A Yukon that only sees occasional family trips and a Sierra 2500 HD used seasonally can both carry old rubber longer than expected if no one checks the date code. Heat cycles, sun exposure, storage conditions, and underinflation all shorten service life. Age-related cracking, vibration, or persistent air loss are signs to replace sooner rather than trying to stretch use from a tire that is simply old.

Tires on a 2015 GMC Trucks vehicle deserve a quick inspection before every drive and a more thorough check before any extended outing. Look for sidewall cracking, punctures, bulges, irregular tread wear, embedded debris, and any pressure loss from the last time the vehicle was used. Because the covered sizes are tubeless radials, valve stems and bead sealing surfaces also deserve attention, especially on trucks or SUVs that have sat for long periods.

A short walk-around can prevent a roadside problem that starts with something small. On a Sierra or Yukon, pressure loss that seems minor in town can become more serious once the vehicle is carrying passengers, cargo, or trailer weight. Check the spare at the same time, since an unused spare often turns out to be the oldest tire on the vehicle. If wear appears uneven, inspect alignment and suspension rather than assuming the tire alone is at fault.

2015 GMC Trucks tire options covered here are radial designs, and the products with service data carry an S speed rating, which corresponds to a 112 mph ceiling. That is well above normal U.S. highway speeds. On a modern truck or SUV, the bigger real-world issue is usually matching the right load service and keeping the tires in sound condition rather than chasing a higher speed symbol. A 265/70R17 Sierra 1500 tire, for example, can vary substantially in load capacity even when the speed rating stays the same.

Highway safety still depends on the whole vehicle. A heavy-duty Sierra carrying weight, or a Yukon loaded for travel, puts more demand on inflation pressure, suspension condition, and braking than on raw speed capability alone. Before regular highway use, confirm the tire size, service description, and pressure are appropriate for your exact GMC model and use case. Old tires with good tread are still a risk, so age, cracking, and air retention deserve as much attention as speed rating.

Inflation pressure on 2015 GMC Trucks tires depends on the exact size and tire specification. The covered BFGoodrich sizes include 265/70R16 at 3,195 pounds maximum load at 80 psi, 255/65R17 at 2,600 pounds at 65 psi, 265/70R17 at either 2,470 pounds at 50 psi or 3,195 pounds at 80 psi depending on version, 245/75R17 at 3,195 pounds at 80 psi, 235/80R17 at 3,085 pounds at 80 psi, and 225/65R17 at 2,150 pounds at 65 psi. Those figures are tire ratings, not blanket vehicle settings.

Use the GMC door placard or owner's manual as the starting point for the vehicle's recommended pressure, then make sure the tire you choose is appropriate for that use. A maximum-pressure figure on the sidewall should not be transferred casually from one size to another or from a heavy-duty truck tire to a crossover application. If your Sierra tows or carries cargo, or your Yukon regularly hauls passengers, check pressure cold and recheck it whenever the vehicle's load changes significantly.

Before a longer drive in a 2015 GMC Trucks vehicle, inspect every tire for cracking, cuts, bulges, punctures, uneven wear, and proper cold inflation pressure. Check the valve stems, look for signs of bead leakage on the wheels, and confirm the spare is usable and inflated. On sizes where load service varies within the same nominal size, make sure the tire on the truck still matches how the vehicle will be used for that trip.

Tires are only one part of a sensible pre-drive check on a truck or SUV of this type. Full-size GMC models often serve towing, hauling, or family-travel duty, so brakes, suspension, fluids, and lights deserve attention too. If the vehicle has been parked for weeks, drive a short local loop first and feel for vibration or pull before committing to highway miles. That quick test can reveal a pressure issue, developing flat spot, or alignment problem while you are still close to home.