Published by Rims & Tires
Compiled & checked by the site's publisher from manufacturer, NHTSA & USTMA data · Updated 2026-08-01
What tires a GMC needs comes down to weight more than anything else: an Acadia crossover wants a quiet all-season touring tire, while a Hummer EV needs a purpose-built Load Range E off-road tire rated for nearly 9,000 pounds. GMC leans on the Denali name across several very different vehicles, gas and electric, and the badge alone doesn't tell you what to buy. The size, load index, and load range on your door jamb do.
GMC's spread: family crossover to a 9,000-pound electric off-roader
The Acadia is a three-row family crossover built on the same platform as the Chevy Traverse, and it's the lightest thing GMC sells with an off-season all-season on the tire. The Hummer EV is the other end of the spectrum entirely — a purpose-built electric off-roader that outweighs most commercial trucks and ships on a tire Goodyear designed specifically for it. Between those two sit the Sierra Denali and Sierra EV, both wearing the same premium trim name but built on different platforms with different weight classes.
That's the thing to hold onto with GMC: 'Denali' tells you the trim is loaded, not what the tire needs to do. A gas Sierra Denali and a Sierra EV Denali carry the same badge and completely different curb weights.
GMC doesn't run a public OEM tire-approval program
Audi marks approved tires with AO. Mercedes uses MO, MO1, and MOE. Porsche runs a full N0–N3 system. GMC has no equivalent. There's no special code stamped on a sidewall meaning "GMC-approved." What GMC does instead is spec a size, a load index, and often a specific tire model per trim, and that spec lives on the door jamb placard, not on the tire itself. On the Hummer EV, Goodyear built the Wrangler Territory MT specifically for that truck, but that's a one-model engineering partnership, not a brand-wide approval marking you'd look for on an Acadia or a Sierra.
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Sierra EV and Sierra Denali: same name, different weight class
The gas Sierra Denali is a luxury half-ton, built to ride quiet and smooth on 20 or 22-inch touring tires: 275/60R20 on the standard Denali package, 275/50R22 on the Ultimate. The Sierra EV Denali Edition 1 shares the Ultium electric platform with the Chevy Silverado EV and weighs roughly 8,500 lbs at the curb before you add any payload, on a 275/50R24 factory fitment. If you drive a Sierra EV, match the load index on your door sticker before anything else — this truck's weight is not optional information, it's the first filter for any replacement tire. Options in the 24-inch EV size are still limited, so plan to order ahead rather than expect same-day stock.
The Hummer EV's purpose-built factory tire
The Hummer EV Edition 1 and EV3X pickup ship on LT305/70R18 — a genuine 35-inch tire on an 18-inch rim, carrying a 126 load index (about 3,748 lbs per tire) in Load Range E. Goodyear developed the Wrangler Territory MT alongside GMC specifically for this truck's weight and its regenerative-braking torque. At a curb weight approaching 9,046 lbs on the Edition 1, that load rating is not a suggestion. Never drop to a lower load range or a lower load index than what shipped from the factory, even if a tire looks the right physical size. The SUV version uses LT305/55R22 as standard, with the same LT305/70R18 available through the off-road package.
What to check before you buy, and the door jamb sticker
Start with which GMC you actually have, since the same nameplate covers wildly different trucks. Confirm your generation on the Acadia, since sizes shifted with the 2017 downsize and again with the 2024 redesign, so a size that fit an older Acadia may not fit a new one. On any EV, load index comes before rolling resistance or tread pattern. On the Hummer EV, never go below the factory load range. Whatever you drive, the tire and loading placard on the driver's door jamb is the document that settles it — it lists the size, load index, and inflation pressure GM certified for your specific build, and it overrides anything general written here.
GMC models covered in this hub — OEM sizes and what changes by trim
| Model | Generation / years | Common OEM sizes | What it changes |
|---|---|---|---|
| GMC Acadia | 2017–2023; 2024+ redesign | 2017–2023: SL/SLE 245/65R17, SLE/SLT 235/65R18, Denali 235/55R20. 2024+: Elevation/Denali 255/55R20 or 275/45R22, AT4 265/65R18 | Sizes shifted with both the 2017 downsize and 2024 redesign — match your generation |
| GMC Hummer EV (pickup) | 2022–current | LT305/70R18 126R Goodyear Wrangler Territory MT, Load Range E | Purpose-built factory tire; ~9,046 lb curb weight requires Load Range E or better |
| GMC Sierra EV Denali | 2024–current | 275/50R24 (Denali Edition 1; other trims vary) | Ultium platform, ~8,500 lb curb weight before payload — match load index first |
| GMC Sierra Denali (gas) | current generation | 275/60R20 (20-inch package), 275/50R22 (22-inch Ultimate) | Luxury half-ton touring focus — quiet ride prioritized over off-road capability |
Frequently asked
What tire size does my GMC need?
It depends heavily on the specific model and generation. An Acadia can run anywhere from 245/65R17 to 275/45R22 depending on trim and year, while a Hummer EV needs LT305/70R18 in Load Range E. Check the tire and loading placard on your driver's door jamb — it lists the exact size and load range for your build.
Does GMC have an OEM tire-approval marking like BMW or Mercedes?
No. GMC doesn't run a public tire-approval program with a special sidewall code the way Audi (AO) or Mercedes (MO) do. GMC specs a size, load index, and often a specific tire model per trim on the door jamb instead. The Hummer EV's Goodyear Wrangler Territory MT is a one-truck engineering partnership, not a brand-wide system.
Are the Sierra Denali and Sierra EV Denali the same truck?
No — they share a trim name and not much else. The gas Sierra Denali is a conventional half-ton built for a quiet highway ride. The Sierra EV Denali is an Ultium-platform electric truck that weighs roughly 8,500 lbs before payload and needs its 24-inch fitment matched on load index, not just size.
Why does the Hummer EV need such a specific tire?
At nearly 9,046 lbs curb weight with instant electric torque, the Hummer EV puts more stress on a tire than almost anything else on the road. Goodyear built the Wrangler Territory MT specifically for that load and torque profile. Dropping below its Load Range E rating isn't a style choice, it's a safety one.
Can I put all-terrain tires on a GMC Acadia?
Physically, in some sizes, yes, but the Acadia is a car-based crossover built for pavement, not a body-on-frame off-roader. A quality all-season touring tire matches how most Acadias are actually driven and lasts longer than an all-terrain would on this platform. Save the all-terrain upgrade for a Sierra or an AT4 trim built with that in mind.
Where can I get GMC tires installed near me in West Georgia?
We match you with local shops around Carroll County and nearby counties that can source your GMC's size, from a common Acadia fitment to the Hummer EV's specialized 35-inch Load Range E tire. Tell us your model, trim, and how you use the vehicle, and we'll point you to a shop that stocks or can order it. The match is free.
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Last updated 2026-08-01. General guidance only — confirm specifics with a local shop for your exact vehicle.