2019 GMC Trucks Tire Fitment Guide

2019 GMC Trucks vehicles use 23 tire sizes across nine model lines: 235/55R20, 235/65R18, 255/65R17, 245/65R17, 265/65R17, 265/70R16, 255/55R20, 265/60R18, 265/65R18, 275/60R20, 275/65R18, 255/70R17, 265/70R17, 275/50R22, 275/55R20, 285/45R22, 245/75R17, 265/70R18, 265/60R20, 235/80R17, 235/50R19, 225/65R17, and 225/60R18. Rim diameters span 16 through 22 inches, and sizes are tied to specific models rather than shared across the entire GMC range.

Acadia, Canyon, Terrain, Sierra 1500, Sierra 1500 Limited, Sierra 2500 HD, Sierra 3500 HD, Yukon, and Yukon XL each have their own fitment pattern, with a few sizes crossing between related models. Products with published rim-width ranges include examples from 6.0-7.5 inches up to 7.5-9.5 inches depending on size, but that range does not apply universally to every 2019 GMC Trucks tire. Start by identifying the exact model and wheel diameter already on the vehicle, then narrow to the correct size and load rating.

On a 2019 GMC Trucks tire, 255/65R17 means the tire is 255 millimeters wide, has a 65-series aspect ratio, uses radial construction, and fits a 17-inch wheel. That size appears on the Acadia and Canyon in this model year. One available 255/65R17 product carries an S speed rating, which corresponds to a 112 mph ceiling, and uses a 17-inch rim with a 7.0-9.0 inch recommended width range.

Modern GMC buyers often focus on overall wheel diameter first, but the width and aspect ratio matter just as much because they affect the tire's overall proportions and wheel fit. A 255/65R17 is not interchangeable with every other 17-inch GMC size simply because the rim diameter matches. Confirm the exact size on the door placard, owner's manual, or current tire sidewall before moving to tread pattern or brand preference.

No, 2019 GMC Trucks models do not use the same tire size. The Acadia alone spans four sizes, the Canyon uses five, the Sierra 1500 uses six, the Sierra 1500 Limited uses five, the Sierra 2500 HD uses four, the Sierra 3500 HD uses two, the Terrain uses three, and both Yukon models use three. A few sizes overlap between models, such as 265/65R18, 265/70R17, 275/55R20, and 285/45R22, but no single size fits the entire lineup.

That matters because GMC's 2019 range covered compact crossovers, midsize pickups, half-ton trucks, heavy-duty trucks, and full-size SUVs, all with different wheel packages and load expectations. If you know only that you have a 2019 GMC, you are still too early in the selection process to choose a tire accurately. Pin down the exact model first, then verify the wheel diameter and the size already fitted before comparing specific tire options.

Available 2019 GMC Trucks products in this overview use either RWL or RBL sidewall styling. RWL, or raised white letters, appears on 255/65R17, 245/65R17, 265/70R16, 275/65R18, 265/70R17, and 245/75R17, while RBL, or raised black letters, appears on 235/80R17 and 225/65R17. All of those products are radial truck or crossover tires from BFGoodrich, so the sidewall choice is tied to the specific size rather than being a universal option in every GMC fitment.

For a 2019 GMC Trucks buyer, sidewall style is usually an appearance decision after model, wheel diameter, and load needs have already been settled. Raised white letters tend to suit truck-oriented builds and off-road styling, while black-letter sidewalls present a more subdued look. If appearance matters, check the exact sidewall marking on the product you intend to use, because two GMC sizes that seem similar may not offer the same sidewall treatment.

BFGoodrich is the brand represented across the available 2019 GMC Trucks products in this overview. It covers 255/65R17, 245/65R17, 265/70R16, 275/65R18, 265/70R17, 245/75R17, 235/80R17, and 225/65R17, all in radial construction. The products belong to the All-Terrain T/A KO2 family, which places the currently covered options firmly in the all-terrain truck-and-utility category rather than in passenger touring or highway-only designs.

That does not mean every 2019 GMC Trucks fitment should be approached the same way. A Terrain or Acadia owner may prioritize staying with the exact OE-style dimensions, while a Sierra HD owner may care more about load capacity and wheel-width compatibility within the correct size. Once you have the right size confirmed, brand choice becomes more meaningful because it can be evaluated in the context of your model's actual use.

The two BFGoodrich 265/70R17 options for 2019 GMC Trucks share the same size, the same radial construction, the same RWL sidewall style, and the same S speed rating with a 112 mph ceiling. The key difference is load capability and inflation: one carries 2,470 pounds at 50 psi, while the other carries 3,195 pounds at 80 psi. Weight differs as well, with one at 45.7 pounds and the heavier-duty version at 53.5 pounds.

That distinction matters most on Sierra applications, especially where half-ton and heavy-duty overlap can create confusion. Two tires can look nearly identical on paper because the size code matches, yet serve different roles once load index and pressure are considered. When comparing 265/70R17 choices for a 2019 GMC Trucks model, treat the size as only the starting point and match the tire's duty level to the truck's intended work.

Rim-width guidance for 2019 GMC Trucks varies by tire size. Published ranges include 255/65R17 at 7.0-9.0 inches, 245/65R17 at 7.0-8.0, 265/70R16 at 7.0-8.5, 275/65R18 at 7.5-9.5, 265/70R17 at 7.0-9.0, 245/75R17 at 6.5-7.5, 235/80R17 at 6.0-7.5, and 225/65R17 at 6.0-8.0. Those figures are size-specific and should not be transferred from one GMC fitment to another just because the rim diameter is the same.

A 17-inch wheel is not automatically correct for every 17-inch GMC tire, because width compatibility changes with section width, aspect ratio, and load intent. This is especially important where crossover and truck sizes coexist in the same model year. Before mounting a replacement tire on original 2019 GMC Trucks wheels, confirm both the wheel diameter and the wheel width against the specific size you plan to use.

The available 2019 GMC Trucks products represented here are modern radial tires and do not carry tube-type markings in the size descriptions. Sizes such as 255/65R17, 245/65R17, 265/70R16, 275/65R18, 265/70R17, 245/75R17, 235/80R17, and 225/65R17 are shown without TT markings, which is consistent with tubeless radial construction. Tube use is not part of the normal fitment conversation for these products in the way it would be for many antique or early bias-ply applications.

The practical step is to inspect the wheel as carefully as the tire. A damaged rim, poor bead seat, or aged valve stem can create air-loss problems even when the tire itself is suited to tubeless use. If your 2019 GMC Trucks vehicle has had wheel changes, aftermarket parts, or prior repairs, confirm the wheel condition and valve hardware before relying on any new tire for regular road service.

A 2019 GMC Trucks vehicle should be stored on clean, properly inflated tires in a cool, dry, dark place away from direct sunlight, electric motors, welders, generators, and other ozone-producing sources. Keep the tires off oil-soaked or solvent-contaminated floors, and move the vehicle periodically if it will sit for an extended time. Because these are radial tires, they generally tolerate storage better than older bias-ply designs, but they still age from heat, UV exposure, and long static loading.

For seasonal or collector use, many owners either roll the vehicle every few weeks or support it in a way that reduces prolonged loading on one contact patch. That helps preserve shape and reduces the chance of temporary flat spotting. If a 2019 GMC Trucks model is stored outdoors or only used occasionally, simple storage discipline often does more for tire life than low annual mileage.

Tires on a 2019 GMC Trucks vehicle should be judged by age and condition as much as by tread depth. A sensible collector and light-use standard is to begin closer inspection once tires reach about five to seven years of age and to treat roughly ten years as a point where replacement deserves serious consideration regardless of mileage. The DOT date code on the sidewall gives the production week and year, which is the best starting point for any age-based evaluation.

That guideline matters because many trucks and SUVs accumulate less mileage than their tires would suggest, especially second vehicles, tow rigs, or low-use family haulers. A tire that still looks acceptable at a glance may already be past its best years if it has spent time in sun, heat, or long storage cycles. On a 2019 GMC Trucks model, age should always be weighed alongside visible cracking, hardening, and air retention.

Tires on a 2019 GMC Trucks vehicle should be inspected before every drive and again before any longer trip. Look for cracking, cuts, bulges, uneven wear, punctures, low pressure, and any change in how the vehicle sits or steers. On larger Sierra and Yukon applications, also pay attention to shoulder wear and signs of overload stress, since those vehicles may see towing, cargo, or heavier passenger use that puts more demand on the tires.

A quick walkaround catches problems early and is especially worthwhile on vehicles that sit for stretches between uses. If one tire repeatedly loses pressure, inspect the valve stem and wheel sealing surfaces rather than assuming the casing is at fault. Regular inspection is a simple habit, but on a 2019 GMC Trucks model it is one of the easiest ways to avoid discovering a preventable tire issue after you are already on the road.

2019 GMC Trucks tires can be suitable for highway driving when the correct size, load rating, condition, and inflation are all matched to the vehicle. The available products here are radial tires, most with S speed ratings that carry a 112 mph ceiling, while one 275/65R18 example carries an R speed rating with a 106 mph ceiling. Those ratings are well above normal U.S. highway speeds, but only if the tire is in sound condition and used within its intended load range.

On many GMC trucks and SUVs, the vehicle's weight, braking, towing load, suspension condition, and alignment are just as important to safe road behavior as the tire itself. A Sierra HD working near its capacity places different demands on a tire than a lightly used Acadia or Terrain. Treat the speed symbol as one part of the overall picture, not permission to ignore age, wear, inflation, or mechanical condition.

Inflation pressure for 2019 GMC Trucks tires should follow the vehicle manufacturer's specification for the exact model and tire size, with the tire's own maximum load-and-pressure figure used as a reference rather than a blanket running pressure. Available examples include 255/65R17 at 2,600 pounds @ 65 psi, 245/65R17 at 2,405 pounds @ 65 psi, 265/70R16 at 3,195 pounds @ 80 psi, 275/65R18 at 3,415 pounds @ 80 psi, 265/70R17 at either 2,470 pounds @ 50 psi or 3,195 pounds @ 80 psi, 245/75R17 at 3,195 pounds @ 80 psi, 235/80R17 at 3,085 pounds @ 80 psi, and 225/65R17 at 2,150 pounds @ 65 psi.

Those numbers should never be swapped between sizes or assumed to be the correct day-to-day pressure for every 2019 GMC Trucks application. A crossover, half-ton pickup, and heavy-duty truck can all use radial tires yet require very different operating pressures. Check the tire placard or owner's manual for the vehicle, then compare it with the sidewall information on the exact tire being installed.

Before a longer drive in a 2019 GMC Trucks vehicle, inspect all four tires and the spare for visible cracking, cuts, punctures, bulges, uneven wear, and proper inflation. Verify that the size on the vehicle matches the intended wheel diameter, and make sure no tire is carrying damage from curb impact or off-road use. On Sierra and Yukon models in particular, also consider whether the trip will involve towing or heavy cargo, since that changes how closely load capacity matters.

Tire checks are only one part of a broader pre-trip routine, but they are among the easiest to overlook because modern radials often appear fine until a closer inspection proves otherwise. If the vehicle has been sitting, drive a short distance locally first and recheck pressure and feel. A careful once-over before departure is a far better habit than discovering a marginal tire after the truck or SUV is already fully loaded.