GMC Hummer EV SUV tires
The GMC Hummer EV SUV 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 Pickup 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
The SUV has a shorter wheelbase than the Hummer pickup but keeps exactly its two fitments. Choose by wheel, not by body or motor count.
The 18 inch LT305/70R18 comes with Edition 1, the Omega Edition and the off-road package in both 2X and 3X form, and it has about 213mm of sidewall. The 22 inch LT305/55R22 has about 168mm.
Both are light-truck construction, load range E. Look for the LT prefix on any replacement: 1,500kg per tire on the 22 inch at 122S, and 1,700kg on the 18 inch at 126R.
Inflate the 22 inch to 52 psi and the 18 inch to 45 psi, the same front and rear.
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 (2024 Edition 1, LT305/70R18/E 126R): https://www.michelinman.com/auto/browse-tires/by-vehicle/2024/gmc/hummer-ev-suv/edition-1/LT305---70R18---E-126R
- Michelin US vehicle fitment tool (2024 3X, LT305/55R22/E 122S): https://www.michelinman.com/auto/browse-tires/by-vehicle/2024/gmc/hummer-ev-suv/3x/LT305---55R22---E-122S
- Michelin US vehicle fitment tool (2025 2X with off-road package, LT305/70R18/E 126R): https://www.michelinman.com/auto/browse-tires/by-vehicle/2025/gmc/hummer-ev-suv/2x-w-slash-off-road-pkg./LT305---70R18---E-126R
- Michelin US vehicle fitment tool (2026 2X, LT305/55R22/E 122S): https://www.michelinman.com/auto/browse-tires/by-vehicle/2026/gmc/hummer-ev-suv/2x/LT305---55R22---E-122S
- BFGoodrich US vehicle fitment tool (2025 3X, LT305/55R22/E 122S): https://www.bfgoodrichtires.com/auto/browse-tires/by-vehicle/2025/gmc/hummer-ev-suv/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 SUV 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 SUV?
- 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.