2025 GMC Sierra 2500 HD Denali Ultimate — LT275/65R20
2025 GMC Sierra 2500 HD Denali Ultimate
- Factory size
- LT275/65R20
- Load / speed
- 126/123S
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What size tires does the 2025 GMC Sierra 2500 HD Denali Ultimate take?
The factory tire size for the 2025 GMC Sierra 2500 HD Denali Ultimate is LT275/65R20.
The catalog lists it at load index 126/123, speed rating S (up to 112 mph).
This trim is also listed with LT265/60R22. Check which one your vehicle has.
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | LT275/65R20 | 126/123 | S |
| All wheels | LT265/60R22 | 123/120 | S |
Confirm the size printed on the sidewall of your current tire or on the tire placard in the driver's door jamb before you buy. Replacement tires should meet or exceed the vehicle's load index and speed rating.