GMC Hummer EV Pickup tires
The GMC Hummer EV Pickup leaves the factory on 305/55 R22 and 305/70 R18 depending on wheel size, and the 305/55 R22 122S LT below is the one most owners are replacing. The GMC Hummer EV SUV takes the same size.
Every fitment
| Generation | Trim | Wheel | Tire size | Load index | Speed | Construction | Marking | Pressure |
|---|---|---|---|---|---|---|---|---|
| Current | 2X and 3X (22in) | 22in | 305/55 R22 | 122 | S | LT | LT305/55R22 load range E | see plate |
| Current | Edition 1, Omega and off-road package (18in) | 18in | 305/70 R18 | 126 | R | LT | LT305/70R18 load range E | see plate |
Your own placard is the authority. You will find it on the on the driver's door jamb, on the B-pillar. Where it disagrees with this page, it wins. Match or exceed the size, load index, speed rating and construction class it gives, and use its pressure figure rather than anything printed on the tire.
What changes on this car
There are two sizes, and both are LT, load range E. The 22 inch LT305/55R22 122S is standard on 2X and 3X. The 18 inch LT305/70R18 126R came on Edition 1 and comes with the off-road package, and it stands roughly 35 inches tall.
The 18 inch is rated R, 170km/h, a low speed category that is typical of off-road tread patterns. A replacement must not drop below R.
At 126 the 18 inch carries 1,700kg per tire, and the truck needs it: its huge Ultium battery takes the pickup past four tonnes.
The two sizes run different pressures, 52 psi on the 22 inch and 45 psi on the taller 18 inch.
No tires listed against this fitment yet. Product specifications are published from each manufacturer's own data and that work is not finished for 305/55 R22. Match or exceed every figure in the table above and you cannot go far wrong.
Where these figures come from
- Michelin US vehicle fitment tool (2022 Edition 1, LT305/70R18/E 126R): https://www.michelinman.com/auto/browse-tires/by-vehicle/2022/gmc/hummer-ev/edition-1/LT305---70R18---E-126R
- Michelin US vehicle fitment tool (2023 3X, LT305/55R22/E 122S): https://www.michelinman.com/auto/browse-tires/by-vehicle/2023/gmc/hummer-ev/3x/LT305---55R22---E-122S
- Michelin US vehicle fitment tool (2024 Pickup 3X Omega Edition, LT305/70R18/E 126R): https://www.michelinman.com/auto/browse-tires/by-vehicle/2024/gmc/hummer-ev-pickup/3x-omega-edition/LT305---70R18---E-126R
- Michelin US vehicle fitment tool (2025 Pickup 2X, LT305/55R22/E 122S): https://www.michelinman.com/auto/browse-tires/by-vehicle/2025/gmc/hummer-ev-pickup/2x/LT305---55R22---E-122S
- Michelin US vehicle fitment tool (2026 Pickup 3X with off-road package, LT305/70R18/E 126R): https://www.michelinman.com/auto/browse-tires/by-vehicle/2026/gmc/hummer-ev-pickup/3x-w-slash-off-road-pkg./LT305---70R18---E-126R
- BFGoodrich US vehicle fitment tool (2025 Pickup 3X, LT305/55R22/E 122S): https://www.bfgoodrichtires.com/auto/browse-tires/by-vehicle/2025/gmc/hummer-ev-pickup/3x/LT305---55R22---E-122S
Every figure here comes from one tire maker's own fitment data, checked across different years or trims. That is a second look rather than a second opinion, so check the label on your door jamb before you buy.
Other cars on the same size
Common questions
- What size tires does the GMC Hummer EV Pickup take?
- It runs 305/55 R22 and 305/70 R18. The exact fitment for your car is on On the driver's door jamb, on the B-pillar.
- Can I fit a cheaper tire to a GMC Hummer EV Pickup?
- Only at 305/55 R22 122S LT or better. That is the figure to hold: a tire below the load index, the speed rating or the construction class is not a cheaper one, it is the wrong one.
- Do I need the LT305/55R22 load range E marking?
- Not legally. The LT305/55R22 load range E version can carry a different compound or an acoustic foam liner that the same tread pattern in the shops does not, so if the car is quiet now and you fit the unmarked version, expect to notice.