Tire specs
- Warranty
- 55,000 miles
- Load index
- 126/123
- Speed rating
- S (112 mph)
- Load range
- E (10-ply)
- Tread depth
- 14.75/32"
- Item #
- 2756520EVO221020230
2025 GMC Sierra 3500 HD SLT — LT275/65R20
O.E. size · LT275/65R20
2025 GMC Sierra 3500 HD SLT
5 tire results
Factory-size matches for your vehicleTire specs
- Warranty
- 60,000 miles
- Load index
- 126/123
- Speed rating
- S (112 mph)
- Load range
- E (10-ply)
- Tread depth
- 14/32"
- Item #
- 2756520BHK1602521
Tire specs
- Warranty
- 50,000 miles
- Item #
- 2756520BKH4120885
Tire specs
- Warranty
- 55,000 miles
- Load index
- 126/123
- Speed rating
- S (112 mph)
- Load range
- E (10-ply)
- Tread depth
- 18/32"
- Item #
- 2756520FAL28070792
Tire specs
- Warranty
- 50,000 miles
- Load index
- 126/123
- Speed rating
- S (112 mph)
- Load range
- E (10-ply)
- Tread depth
- 16/32"
- Item #
- 2756520BRI000022
What size tires does the 2025 GMC Sierra 3500 HD SLT take?
The factory tire size for the 2025 GMC Sierra 3500 HD SLT is LT275/65R20.
The catalog lists it at load index 126/123, speed rating S (up to 112 mph).
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | LT275/65R20 | 126/123 | 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.