Tire specs
- Warranty
- 50,000 miles
- Load index
- 126/123
- Speed rating
- S (112 mph)
- Load range
- E (10-ply)
- Tread depth
- 18/32"
- Item #
- 2756520GOO176303991
2025 GMC Sierra 2500 HD AT4 — LT275/65R20
2025 GMC Sierra 2500 HD AT4
- Factory size
- LT275/65R20
- Load / speed
- 126/123S
40 tire results
Factory-size matches for your vehicleTire specs
- Warranty
- 50,000 miles
- Load index
- 126/123
- Speed rating
- S (112 mph)
- Load range
- E (10-ply)
- Tread depth
- 16.4/32"
- Item #
- 2756520TOY357270
Tire specs
- Warranty
- 45,000 miles
- Load index
- 126/123
- Speed rating
- Q (99 mph)
- Load range
- E (10-ply)
- Tread depth
- 17.1/32"
- Item #
- 2756520TOY358370
Tire specs
- Load index
- 126
- Speed rating
- P (93 mph)
- Load range
- E (10-ply)
- Tread depth
- 19/32"
- Item #
- 2756520TOY360410
What size tires does the 2025 GMC Sierra 2500 HD AT4 take?
The factory tire size for the 2025 GMC Sierra 2500 HD AT4 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 LT275/70R18, LT265/60R22. Check which one your vehicle has.
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | LT275/65R20 | 126/123 | S |
| All wheels | LT275/70R18 | 125/122 | R |
| 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.